Search found 63 matches: backlight

Searched query: +backlight

by amberwolf
Nov 04 2018 10:25pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

Gab wrote:
Nov 04 2018 8:39pm
its not the battery BMS cutting out because I added an auxiliary battery in parallel to run the cav3 and it would not cut out when run like that.
So, it does not cut out with the aux battery just to run the CA, but it does cutout when run with only the battery that has a BMS?

If that's the case, then it is very likely to be the battery's BMS cutting out momentarily from voltage sag during the high power draw. If it is not actually cutting out, it's still very likely sagging in voltage below the CA's minimum voltage limit (10v in your case).


LOW VOLTS is the message the CA would show when the battery voltage to it drops below the minimum voltage limit set in the CA menus (10v in your case). It will shutdown and blank the screen at that point (though you may still see the backlight on). WHen voltage rises above that, it'll reboot the CA and function normally again.
by teklektik
Jun 08 2018 1:57pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

The LED backlight is driven in series with the CA electronics and gets brighter with increased current draw.

This strongly suggests that your pot is wired improperly and going to the high setting is shorting out the +5V supply. Recheck your wiring - I'm pretty sure you have the wiper and one end interchanged.
by Rob92
May 03 2018 4:16am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

FETguy wrote:
Apr 30 2018 4:20pm
Rob92 wrote:
Apr 30 2018 11:51am

Thanks for the tip. I just applied 12v to the LED +/- pin and no splash screen now, only some flickering of the screen.
Does this mean that below parts wont fix my CA, or is there still hope?
We need to clarify how to do this test. The LED backlight for the display is connected between LED+ and LED- and has a normal operating voltage of about 3 Volts, so if you applied 12 VDC between those pins, it would just make the LED light up, and maybe damage it. Justin's original troubleshooting suggestion is:

"To see if the rest of the CA is fine, just apply 12V power directly to where the output of the mosfet would normally be (or to the LED+ pin on the LCD header). If all is well it should power up to the splash screen fine..."

Note that he means that you should apply 12 VDC between LED+ and ground (black wire, or any pad on the board marked "G"). +12 VDC goes to LED+ and -12VDC goes to ground. Please try that, and let us know.

I measured Z1 and this diode is still working. Good. Let's see if the rest works.

Is it still usefull to order the items for repair? Shipping from US to EU is 18 dollars and probably takes a while I guess. Or anyone knows a good site within the EU?

You can convert the DigiKey part numbers above to manufacturer's part numbers by dropping the "CT-ND". Then you can search for them at European distributors. Hopefully you will only need the MOSFET.
Thanks for the clarification but I still get the same behaviour when applying 12v to the GND and LED+ pin. A Flickering screen. Is it worth trying to replace the parts?
by FETguy
Apr 30 2018 4:20pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

Rob92 wrote:
Apr 30 2018 11:51am

Thanks for the tip. I just applied 12v to the LED +/- pin and no splash screen now, only some flickering of the screen.
Does this mean that below parts wont fix my CA, or is there still hope?
We need to clarify how to do this test. The LED backlight for the display is connected between LED+ and LED- and has a normal operating voltage of about 3 Volts, so if you applied 12 VDC between those pins, it would just make the LED light up, and maybe damage it. Justin's original troubleshooting suggestion is:

"To see if the rest of the CA is fine, just apply 12V power directly to where the output of the mosfet would normally be (or to the LED+ pin on the LCD header). If all is well it should power up to the splash screen fine..."

Note that he means that you should apply 12 VDC between LED+ and ground (black wire, or any pad on the board marked "G"). +12 VDC goes to LED+ and -12VDC goes to ground. Please try that, and let us know.

I measured Z1 and this diode is still working. Good. Let's see if the rest works.

Is it still usefull to order the items for repair? Shipping from US to EU is 18 dollars and probably takes a while I guess. Or anyone knows a good site within the EU?

You can convert the DigiKey part numbers above to manufacturer's part numbers by dropping the "CT-ND". Then you can search for them at European distributors. Hopefully you will only need the MOSFET.
by alec
Dec 17 2017 3:05am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

teklektik wrote:
Dec 16 2017 1:21pm
alec wrote:
Dec 15 2017 9:02pm
I put my multimeter on my hall wires –
G - 0.06 to 2.5v + depending on wheel movement
Y - 5v to 2.5v - depending on wheel movement
B - 0-0.08v
alec wrote:
Dec 15 2017 9:02pm
The numbers I provided were actually a result of the probing method.

I spun the wheel and jumped the yellow to black and observed no change in the arrow. The only noticeable reaction was a slight backlight dim (perhaps 5% brightness change).
Ja - those are bad numbers for having the pull-ups in place and the lack of response from the CA seems to indicate the SPD input is fried. 5V electronics is just a little finicky about getting hit with battery voltage...

I would check the halls when disconnected from the controller using a pull-up just to make sure this is not a controller issue (unlikely), but it's looking like you are about to learn all about hall replacement. You should email Grin and see what they have to say and can offer for CA options.
Just switched my halls to the secondaries and noted ~5v-ish on all three halls. The speedo is still null, however. Time to send the CA into Grin, eh?
by teklektik
Dec 16 2017 1:21pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

alec wrote:
Dec 15 2017 9:02pm
I put my multimeter on my hall wires –
G - 0.06 to 2.5v + depending on wheel movement
Y - 5v to 2.5v - depending on wheel movement
B - 0-0.08v
alec wrote:
Dec 15 2017 9:02pm
The numbers I provided were actually a result of the probing method.

I spun the wheel and jumped the yellow to black and observed no change in the arrow. The only noticeable reaction was a slight backlight dim (perhaps 5% brightness change).
Ja - those are bad numbers for having the pull-ups in place and the lack of response from the CA seems to indicate the SPD input is fried. 5V electronics is just a little finicky about getting hit with battery voltage...

I would check the halls when disconnected from the controller using a pull-up just to make sure this is not a controller issue (unlikely), but it's looking like you are about to learn all about hall replacement. You should email Grin and see what they have to say and can offer for CA options.
by alec
Dec 15 2017 9:02pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

teklektik wrote:
Dec 14 2017 11:28pm
Thanks for the kind words - glad you find the posts helpful :D

The values you report for the halls suggest all three are toast. But - this may instead be a matter of test technique. If you search ES or go to the ebikes.ca site under 'Learn'/'Troubleshooting' you will find some help on proper procedures. Otherwise:

Testing the motor halls typically needs a pull-up resistor to 5V since the hall just sinks current and has no means to actually supply current/voltage to the output pin. The usual trick is to just probe the back of the hall connector (while it's plugged in) and allow the controller to supply the pull-up as per normal. However, in this case, you have a CA, controller, and motor that all got hit by phase lightning and so you may need to test the parts individually to localize the issue.

You could start by doing the probing trick, if this works okay, then you're done with the hall question. If things don't look so good, you will need to move on to supplying power to the hall connector, attaching a pull-up (say something like 2K-10K - whatever you have around) and testing the motor halls standalone.
  • It's hard to overestimate the value of those cheapie ebike testers that you can get for $10 on eBay. I always recommend getting one of these up front and mounting up the same connectors that you use on your build - it allows you to test halls, phase, controller, and throttle all in just a few minutes (and you know something will eventually go wrong, so...). But, at this point that's a 'futures' project for you...
At the end of the day, the CA SPD input is usually just connected directly to oone of the motor hall connections so if Something Bad happens to the hall voltage the CA is going to see it, too.

You can test the CA3 by going to the SPDOMETER setup preview screen and watching the 'P' with the little arrow. Turning the wheel slowly should make the arrow flip up and down. If you get nothing, you can try disconnecting the yellow wire and intermittently touching it to Gnd. This should make the arrow dance. No dancing = unhappy CA.
Thanks for your response. The numbers I provided were actually a result of the probing method.

I spun the wheel and jumped the yellow to black and observed no change in the arrow. The only noticeable reaction was a slight backlight dim (perhaps 5% brightness change).

Is my CA and hall toast? Oh man...
by ebike11
Nov 18 2017 3:47am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Brightening CA Backlight

teklektik wrote:
Oct 02 2017 11:18am
ebike11 wrote: actually both CA3s are running on the same battery pack. just one CA3 is brighter than the other straight out of the box.
I am not confident opening the CA3s up.
Anyhow, since you don't feel comfortable cracking the case, you can go after this by directly increasing the 5V regulator load with an external resistor. This is probably the 'hackiest' strategy, but will work fine if you need a no-messing-with-CA-internals approach - just pay attention to the overall current inventory as mentioned above. So - you might try jumping a 1K resistor across the +5V and Gnd pins of the AuxPot or Throttle connectors. This would boost the current draw 5V/1K = 5ma which will visibly brighten the backlight. You could make up a super short M/F JST pass-through extender that has the power leads jumpered with the resistor of choice (use a small 1/8 or 1/10W part - there's no power to speak of). This would let you do the fabrication off the bike on the bench and then just plug in the gizmo when it's ready with no chance of taking your bike out of service with a fabrication accident.
Hi again Teklektic...I got some 1k resistors from aliexpress. I connected it to this connector that will plug into the AUX of the CA3
Looking to increase the CA3 brightness a tad.
Of course ill shrink wrap everything.
Would adding 2 1k resistors twisted together harm anything? Thanks

https://postimg.org/image/rmm01o63l/
by ebike11
Oct 08 2017 5:27am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

izeman wrote:as tek already stated, different total loads make the backlight brighter or dimmer. as we don't know how bright it is right now, you can't say what load you must add, to make it as bright as the other one.
taking tek's example of a single 1k resistor, the posted parts are correct and fine to use.
the problem you have is, that with 1k the lcd may then by brigher or dimmer than the other one. so you would need a different resistor. buying an assortment of different values gives you the possibilty to play around and find the perfect value.
of course you could put some 1k resistors in parallel and series to build a resistor mesh of any value you like (well 100k max of course, as it's 100 pieces of 1k :wink: )
this may help you: http://www.calculator.net/resistor-calculator.html
Thx for the reply!
At the moment it seems a bit dimmer than my othe CA that is on the same bike. Id just like to experiment getting the brightness up a bit more without having to open anything up.
There are no accessories or anything connected..just the throttle and the power to the external shunt
by izeman
Oct 08 2017 3:47am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

as tek already stated, different total loads make the backlight brighter or dimmer. as we don't know how bright it is right now, you can't say what load you must add, to make it as bright as the other one.
taking tek's example of a single 1k resistor, the posted parts are correct and fine to use.
the problem you have is, that with 1k the lcd may then by brigher or dimmer than the other one. so you would need a different resistor. buying an assortment of different values gives you the possibilty to play around and find the perfect value.
of course you could put some 1k resistors in parallel and series to build a resistor mesh of any value you like (well 100k max of course, as it's 100 pieces of 1k :wink: )
this may help you: http://www.calculator.net/resistor-calculator.html
by ebike11
Oct 08 2017 2:50am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Brightening CA Backlight

teklektik wrote:
ebike11 wrote: actually both CA3s are running on the same battery pack. just one CA3 is brighter than the other straight out of the box.
I am not confident opening the CA3s up.
As the posts in izeman's search revealed, the CA brightness is largely a matter of the +5V current drawn by the CA and it's accessories (throttle, etc). So - if you have a three position switch or ebrakes on one CA but not the other, the brightness might be different. Different LED batches might yield slightly different brightness, but I can't speak to that probability.

As pointed out in post (https://endless-sphere.com/forums/viewt ... 8#p1263588), it's possible to dim the display a bit by bypassing current around the LCD module. Similarly, it's possible to brighten the backlight by adding a load resistor in parallel with the 5V regulator to draw a bit more current through the LCD module. In that case, you would still need to pay attention to the current limitations determined by the pack voltage as called out in the Guide. For instance, since the CA 5V supply is drawing about 10ma, you might add a load resistor to draw maybe 10-50% more current (1-5ma).

Anyhow, since you don't feel comfortable cracking the case, you can go after this by directly increasing the 5V regulator load with an external resistor. This is probably the 'hackiest' strategy, but will work fine if you need a no-messing-with-CA-internals approach - just pay attention to the overall current inventory as mentioned above. So - you might try jumping a 1K resistor across the +5V and Gnd pins of the AuxPot or Throttle connectors. This would boost the current draw 5V/1K = 5ma which will visibly brighten the backlight. You could make up a super short M/F JST pass-through extender that has the power leads jumpered with the resistor of choice (use a small 1/8 or 1/10W part - there's no power to speak of). This would let you do the fabrication off the bike on the bench and then just plug in the gizmo when it's ready with no chance of taking your bike out of service with a fabrication accident.
Hi Teklektik,
Would this be the correct resistor to jump across the POS. and NEG. of the AuxPot? Id like to try it first to increase the the screens brightness a bit. It seems easy enough. Thanks

https://www.aliexpress.com/item/1LOT-10 ... 4d4d39440b
by ebike11
Oct 03 2017 1:24am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Brightening CA Backlight

teklektik wrote:
ebike11 wrote: actually both CA3s are running on the same battery pack. just one CA3 is brighter than the other straight out of the box.
I am not confident opening the CA3s up.
As the posts in izeman's search revealed, the CA brightness is largely a matter of the +5V current drawn by the CA and it's accessories (throttle, etc). So - if you have a three position switch or ebrakes on one CA but not the other, the brightness might be different. Different LED batches might yield slightly different brightness, but I can't speak to that probability.

As pointed out in post (https://endless-sphere.com/forums/viewt ... 8#p1263588), it's possible to dim the display a bit by bypassing current around the LCD module. Similarly, it's possible to brighten the backlight by adding a load resistor in parallel with the 5V regulator to draw a bit more current through the LCD module. In that case, you would still need to pay attention to the current limitations determined by the pack voltage as called out in the Guide. For instance, since the CA 5V supply is drawing about 10ma, you might add a load resistor to draw maybe 10-50% more current (1-5ma).

Anyhow, since you don't feel comfortable cracking the case, you can go after this by directly increasing the 5V regulator load with an external resistor. This is probably the 'hackiest' strategy, but will work fine if you need a no-messing-with-CA-internals approach - just pay attention to the overall current inventory as mentioned above. So - you might try jumping a 1K resistor across the +5V and Gnd pins of the AuxPot or Throttle connectors. This would boost the current draw 5V/1K = 5ma which will visibly brighten the backlight. You could make up a super short M/F JST pass-through extender that has the power leads jumpered with the resistor of choice (use a small 1/8 or 1/10W part - there's no power to speak of). This would let you do the fabrication off the bike on the bench and then just plug in the gizmo when it's ready with no chance of taking your bike out of service with a fabrication accident.
Thanks for the info
I think ill go the 1k resistor jumping method but ill have to order a resistor as i have nothing at the moment unless there is an alternative solution.
I have plenty of M/F short JST connectors though. If i jumped the 5v to GROUND. of the AuxPot with wires only, what would happen?

Also sorry to ask you another question but i have my CA3 hooked up on my bike to my cyclone motor and cyclone controller using also the Grin shunt. My throttle wires are as follows:

green at throttle TO green at JST plug on CA3 (NOTE: black and red wires at CA3 JST plug are unused)
green from grin shunt to green to controller throttle plug
Red and black from throttle TO red and black of controller throttle plug
Im hoping this is correct.

I set my CA3 to "pass thru". Is this correct? The motor is still spinning very slowly and the display showing 5V of power constantly going through the motor when the throttle isnt even being touched. When i turn the throttle it powers as normal but when i let go of the throttle 5v is still flowing through.
Would you know what i need to adjust? I want the throttle/CA3 to be in Normal mode so that i can use cruise function.
Thanks so much!
by teklektik
Oct 02 2017 11:18am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Brightening CA Backlight

ebike11 wrote: actually both CA3s are running on the same battery pack. just one CA3 is brighter than the other straight out of the box.
I am not confident opening the CA3s up.
As the posts in izeman's search revealed, the CA brightness is largely a matter of the +5V current drawn by the CA and it's accessories (throttle, etc). So - if you have a three position switch or ebrakes on one CA but not the other, the brightness might be different. Different LED batches might yield slightly different brightness, but I can't speak to that probability.

As pointed out in post (https://endless-sphere.com/forums/viewt ... 8#p1263588), it's possible to dim the display a bit by bypassing current around the LCD module. Similarly, it's possible to brighten the backlight by adding a load resistor in parallel with the 5V regulator to draw a bit more current through the LCD module. In that case, you would still need to pay attention to the current limitations determined by the pack voltage as called out in the Guide. For instance, since the CA 5V supply is drawing about 10ma, you might add a load resistor to draw maybe 10-50% more current (1-5ma).

Anyhow, since you don't feel comfortable cracking the case, you can go after this by directly increasing the 5V regulator load with an external resistor. This is probably the 'hackiest' strategy, but will work fine if you need a no-messing-with-CA-internals approach - just pay attention to the overall current inventory as mentioned above. So - you might try jumping a 1K resistor across the +5V and Gnd pins of the AuxPot or Throttle connectors. This would boost the current draw 5V/1K = 5ma which will visibly brighten the backlight. You could make up a super short M/F JST pass-through extender that has the power leads jumpered with the resistor of choice (use a small 1/8 or 1/10W part - there's no power to speak of). This would let you do the fabrication off the bike on the bench and then just plug in the gizmo when it's ready with no chance of taking your bike out of service with a fabrication accident.
by ebike11
Oct 02 2017 6:00am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

izeman wrote:
ebike11 wrote:
izeman wrote:Search this thread. Tek posted some info about backlight.
was it fairly recent?
ok. i did the job for you :) -> https://endless-sphere.com/forums/searc ... sf=msgonly
Capture.JPG
thanks!
actually both CA3s are running on the same battery pack. just one CA3 is brighter than the other straight out of the box.
I am not confident opening the CA3s up
I have 2 motors, 2 controllers and 1 large battery pack that is wired into both controllers as well as seperate throttles, one on each handgrip lol
its kind of an odd set up but my goal is to have the quietness of a hub and a mid drive to tackle hills etc.
so far its all running smoothly
by izeman
Oct 02 2017 3:14am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

ebike11 wrote:
izeman wrote:Search this thread. Tek posted some info about backlight.
was it fairly recent?
ok. i did the job for you :) -> https://endless-sphere.com/forums/searc ... sf=msgonly
Capture.JPG
Capture.JPG (21.83 KiB) Viewed 2175 times
by ebike11
Oct 01 2017 5:31pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

izeman wrote:Search this thread. Tek posted some info about backlight.
was it fairly recent?
by izeman
Oct 01 2017 11:27am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

Search this thread. Tek posted some info about backlight.
by ebike11
Sep 30 2017 3:04pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

izeman wrote:No. Not w/o hardware modification.
I also noticed my 2 year old CA3 has brighter backlights compared to my new one. My new CA3 is a bit dim. Not a big deal. Just noticable when they are on side by side. I see no option for LCD brightness and as you mentioned no on/off backlight setting
by teklektik
Jun 08 2017 10:00pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Unbidden AuxA Pot display appearance

mrbill wrote: The CA3 on the bike on which I have observed the unbidden AuxA pot display problem was modified ... to enable the red backlight LEDs by placing a solder bridge across the recommended pads on the CA3 board. In so doing I also left the white LEDs in-circuit.

Can this modification introduce noise sufficient to cause an unbidden AuxA pot adjust screen to appear?
Nope. That's just a bit of steady DC load with no switching, etc to create noise. In your case, I suspect the long CA-DP run is picking up some controller or phase wire noise along the way, or the controller itself may be injecting it directly onto the CA-DP lines. In any case it's extremely unlikely that the origin of the noise is the CA or its accessories.
by mrbill
Jun 08 2017 3:13pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Unbidden AuxA Pot display appearance

mrbill wrote:Yes, I use the same potentiometer model, purchased at the same time, on the bike that is not experiencing problems. Also the same controller (ASI BAC2000), motor (Edge 1500 w/Statoraid and Hubsinks), and CA3 (at firmware revision b16 (now x16 on the problem bike)) are on both bikes, connected in the same way. There could be unit to unit variability somewhere that accounts for the abnormal display behavior. But my two bikes are configured as closely as possible as this makes it easier for me to keep the settings and firmware (both controller and CA3) up-to-date.
I need to post a correction. What I said above isn't quite true.

The CA3 on the bike on which I have observed the unbidden AuxA pot display problem was modified by me (per Justin's approval in this posting: https://endless-sphere.com/forums/viewt ... 5#p1263928) to enable the red backlight LEDs by placing a solder bridge across the recommended pads on the CA3 board. In so doing I also left the white LEDs in-circuit.

Can this modification introduce noise sufficient to cause an unbidden AuxA pot adjust screen to appear?
by teklektik
May 04 2017 12:13pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

smart114 wrote:...when switching the display is bright.
The LCD backlight responds to the current draw of the CA and 5V/10V accessories that it powers, so when you press buttons, use ebrakes, etc the LCD backlight can briefly change brightness. This is normal but can be a little unsettling I guess.
smart114 wrote:Have noticed that at 50 V only little power is available for the sensor system. What can I do, that more can be connected, or the Cycleanalyst tolerates more tension?
There is a fair bit of current available at around 50V - about 26ma. This is discussed on page 50 of the Unofficial Guide - there are some options described there if you need more power. I would think there is enough to run your throttle, ebrakes, and gear sensor - but I'm just guessing about the gear sensor.

I recommend that you hook up a DVM and measure the current you are actually using. You can hook it to the gear sensor and other devices individually or hook into either the CA red or black wires on the CA-DP connector. If you hook up at the CA-DP connector you will also see the current used by the CA itself (about 10ma) so subtract 10ma to compare to the table on page 50 which already has the CA current subtracted (that is, it shows accessory current only without the 10ma for the CA added in). If you're pretty close to the 26 ma in the table, I wouldn't worry about it - the table is based on conservative power capability so a few more ma at that voltage won't really matter.
by schüttelhuber
May 01 2017 8:03am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

Hi Guys.

I´m from Germany. And I have a Cycle Analyst V3. Sorry for my bad englisch :D

I have a big problem. As i want to measure something on my CA, i closed the 10V line. In this forum, the solution is add a new diode on the unsafe 10V line and everything is good.. But it isn´t :( Now, the backlight is flashing but nothing else is happening. And in the german forum no one has the know how to fix it. The bug fix doesn´t works too, he said, power on.. but it is with power.

I have to say, that at first, it was the wrong diode and we didn´t see it. It was a z-diode. I try it with this diode and it works for just a second. Then i replace the z-diode with a normal diode. And now, only backlight. And a new display is really expensive, so i have the hope, that one of you, guys, can help me. You are my last hope.. :)

Thank you for your answers.

Greetings from Germany
by JeffH
Mar 25 2017 5:25pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

justin_le wrote: Nope, it'll be fine. What you actually want to do is leave the white LED jumper soldered together, then hook up two wires to a simple toggle switch or button which will short out the red LED pads. When the switch is closed, both the red and the white LED's are in parallel, but the red LED's have a lower forwards voltage drop so they'll take all the current while the white LED's won't have anything flowing through them. When you short those two wires with a switch, the backlight will go red, and when you open the switch it will revert back to white.

That would actually be really cool to see a CA set up like this with a simple day/night selector switch so I encourage you to open it and perform the simple wiring mod. There is room inside the CA enclosure for the body of a small toggle switch so it would stay self contained.
Glad this info popped up because I've been wanting a dimmer screen for night use for a while.

Super easy hack to make.
My CA is mounted in a mini-console so i just ran a pair of wires from the led pads on the board, outside the case, to a slide switch mounted in the console.
Works just as Justin describes.

The red lights are bright enough to see during the day and at night they're just right.

Thx
by justin_le
Feb 09 2017 10:01pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Re: Cycle Analyst V3 preview and first beta release

teklektik wrote:
Marc S. wrote:The CA screen got red LEDs as well?
Adding wires and a remote switch to the pads, looks like a great way to change between a red 'night ride' and a green 'daylight' setting for the CA.
Be aware that you are heading into uncharted waters switching the LEDs on the fly in lieu of using the permanent solder bridge technique.
Nope, it'll be fine. What you actually want to do is leave the white LED jumper soldered together, then hook up two wires to a simple toggle switch or button which will short out the red LED pads. When the switch is closed, both the red and the white LED's are in parallel, but the red LED's have a lower forwards voltage drop so they'll take all the current while the white LED's won't have anything flowing through them. When you short those two wires with a switch, the backlight will go red, and when you open the switch it will revert back to white.
Red LED Backlight Wiring.jpg
Red LED Backlight Wiring.jpg (98.54 KiB) Viewed 7793 times
That would actually be really cool to see a CA set up like this with a simple day/night selector switch so I encourage you to open it and perform the simple wiring mod. There is room inside the CA enclosure for the body of a small toggle switch so it would stay self contained.
Marc S. wrote:The CA screen got red LEDs as well?
We've had this features for over 6 years now but forgot to document it elsewhere on our website other than the original announcement, so I'm glad to see it finally (re)discovered!
http://www.ebikes.ca/news/red-backlight/
DimBacklight Blog Post.jpg
DimBacklight Blog Post.jpg (89.08 KiB) Viewed 7793 times
Pretty much everyone who has a large screen CA device, either V2 or V3, can do this mod for night riding.

Now what we are working on is trying to get a VA LCD module with a white on black pixel logic to still look good at the 10mA CA current, so the future screens might look something more like this:
VA LCD CA Example.jpg
VA LCD CA Example.jpg (86.75 KiB) Viewed 7793 times
by teklektik
Feb 08 2017 12:23pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 692818

Cycle Analyst Mods for LCD Backlight Color / Brightness

teklektik wrote:
Marc S. wrote:Is it possible to enable changing the brightness of the CA screen backlight in setup?
...the CA backlight is a bit too bright for comfort when commuting in the dark.
Nope, not adjustable by firmware/configuration.
The LCD backlight is actually part of the CA power regulator circuit - this is why it changes brightness a bit when you press buttons, etc.
Here's some details:
There are two ways to go after your 'night running' request:
  1. There's a set of pads on the back of the LCD that are normally bridged to the 'W' or White pad. This illuminates the white LEDs. However, you can move the solder bridge to the 'R' or Red pad instead to illuminate the red LEDs. This will give you the familiar night-vision-preserving red illumination.
  2. As mentioned previously, the LCD module is part of the power regulator circuit (see below). As you can see, changing the current draw for the CA and accessories directly affects the current through the LCD and so its brightness. Justin points out that the brightness can be reduced by bypassing the LCD with a resistor. This will send some of the current around the LCD instead of through the backlight. The exact value will depend on your installation. There's about a 3.5V drop across the LCD module due to the backlight LEDs and the basic CA alone draws about 10ma - other accessories add to that current. A resistor of about 330ohm should completely extinguish the LEDs and about 2K or more should give near full brightness. You can trial and error a few resistors to get the desired effect or you might use a 2K pot or a 2K pot in series with a 330ohm resistor to make the brightness adjustable.
    CA_PowerRegAndLcdModule4.png
    CA_PowerRegAndLcdModule4.png (15.4 KiB) Viewed 7873 times
Hookup points are as shown (works for either CA2 or CA3 models):
CA_LcdColorBrightnessMods2.jpg
CA_LcdColorBrightnessMods2.jpg (234.71 KiB) Viewed 7846 times
EDIT: See >> this post << for notes on brightening the backlight.