Search found 1124 matches

by whereswally606
Jan 18, 2018 7:52 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 67
Views: 1301

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Better to have one brain and a bigger control board. Perhaps in the future Lebowski will extend on this design for higher power levels
by whereswally606
Jan 17, 2018 7:28 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

As of this evening i think i may have implemented PID instead of simple bang bang algorithm. Not gonna test it now. It's too late and i made that mistake last night. But the logging in the serial monitor and the turning on the stepper look good so i think it might produce an even nicer heat curve gr...
by whereswally606
Jan 16, 2018 8:49 pm
Forum: General Discussion
Topic: Custom printing of large timing belt pulleys?
Replies: 6
Views: 89

Re: Custom printing of large timing belt pulleys?

So I spent a while reworking a pulley from a open scad DXF builder. I tried the code from thingiverse which produced the STL file direct but then I couldnt easily edit it in fusion 360. I have successfully created the STL for a 224 tooth htd5 15m pulley. It is in 8 pieces so I can print it on my Ane...
by whereswally606
Jan 16, 2018 7:09 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

Some actual progress this evening. graph of 2nd reflow temp.png So this wavy line is the bang bang fully on fully off algorithm as collected via the serial port. temp in degrees C on the Y axis, time in seconds on the X axis. I don't know whether this is really good enough for a decent reflow and i ...
by whereswally606
Jan 16, 2018 11:27 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 67
Views: 1301

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

not sure i understand here Emgee, Bobc brain board is the brain and the two dcdc convertors, so when you look at lebowskis original through hole board and take those two things away, all you are left with is the drivers and the current sensors. When you think about it, Lebowski is putting both the d...
by whereswally606
Jan 16, 2018 5:24 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 67
Views: 1301

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Not a bad plan. I was thinking regarding securing the brainboard to the power board I would design and print custom plastic spacers for the other end to the header. If there is a hole in the middle there Bas, it would make it very secure and easy to fasten the board securely down. Good shout Marcos....
by whereswally606
Jan 15, 2018 1:29 pm
Forum: General Discussion
Topic: Wireless Connection from House into Garage
Replies: 7
Views: 99

Re: Wireless Connection from House into Garage

Jon NCal wrote:
Jan 13, 2018 11:38 am
There's some ethernet devices that work through power lines. Would depend on your wiring for your buildings.
+1 on this, its what i did when i had the exact same problem as lurkin. Literally the same problem exactly and the solution was about £15 second hand off ebay and works like a charm.
by whereswally606
Jan 15, 2018 5:57 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

stepper motor scr for reflow oven web2.png Here is the progress on my automation of the dimmer switch for my reflow oven. I worked out how to control the stepper forward and backward one 3/4 turn so that the dimmer is fully on and fully off with no overshoot. Now i can use this code with my old rel...
by whereswally606
Jan 12, 2018 5:26 am
Forum: Battery Technology
Topic: Vibration is killing your cells!
Replies: 8
Views: 461

Re: Vibration is killing your cells!

thats interesting, i wonder whether the cells in the packs on my bike are in the best orientation now. They lie length wise across the downtube (macallister B&Q 36v packs on my norco team race). This might sugest the worst way is to have the 18650/26650 cans pointing toward the floor like they would...
by whereswally606
Jan 11, 2018 10:15 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

received the new wson pcbs yesterday. I have sent off today for a new solder paste stencil from oshstencils which cost about £10 but I think worth it to get the accuracy I need deploying the paste layer. My friend has a stencil cutting machine but I don't think it has the accuracy of pitch so a tenn...
by whereswally606
Jan 10, 2018 7:04 am
Forum: E-Bike Technical
Topic: Getting your gerbers right. PCB design chat, prius related too
Replies: 0
Views: 76

Getting your gerbers right. PCB design chat, prius related too

WARNING LONG SLIGHTLY GEEKY POST So recently I've learnt a lot about how to manipulate Gerber files directly and indirectly to change designs or to get the format such that you can use your preferred cheaper fabrication house. This has been partly through having to redesign bobc lebowksi brain board...
by whereswally606
Jan 10, 2018 6:10 am
Forum: Motor Technology
Topic: Power PCB for Lebowski Controller to be combined with Bobc's processor board
Replies: 67
Views: 1301

Re: Power PCB for Lebowski Controller to be combined with Bobc's processor board

Checked the tracking number for china post for the new wson designed bobc brain board. They were in the country as of yesterday. Wont be long now I hope, just hoping no other unforeseen show stoppers
by whereswally606
Dec 29, 2017 8:25 am
Forum: Items for Sale - New
Topic: Lebowski PCBs through hole For sale. £9 each before shipping
Replies: 27
Views: 2293

Re: Lebowski PCBs through hole For sale. £9 each before shipping

Send me a personal message and I will get you a price and as soon as if receive payment I send them. Simples.
by whereswally606
Dec 27, 2017 3:45 pm
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

So I had ago at putting a digital pot 10k into a Chinese scr. I desoldered the 500k 2w ohm pot and soldered a 3 wire breakout to go to my breadboard. I then wired up the digital pot to the nano and to the scr. It had a looping code which continuously turned the wiper up to 128 and back down to 0. Ho...
by whereswally606
Dec 25, 2017 12:13 pm
Forum: Items for Sale - New
Topic: Lebowski PCBs through hole For sale. £9 each before shipping
Replies: 27
Views: 2293

Re: Lebowski PCBs through hole For sale. £9 each before shipping

x.l.r.8 wrote:
Dec 24, 2017 6:58 am
Im ready to take the plunge, are there still boards available or do I need to add my name to a list?
Not too late, pm sent
by whereswally606
Dec 24, 2017 12:35 pm
Forum: E-Bike General Discussion
Topic: Ebike Stolen from Northampton, UK
Replies: 4
Views: 281

Re: Ebike Stolen from Northampton, UK

Will keep a look out, gutted for you, I know how much work goes in to a build like that.
by whereswally606
Dec 13, 2017 6:33 am
Forum: Battery Technology
Topic: Prismatic cells: the easy way to lithium?
Replies: 8
Views: 492

Re: Prismatic cells: the easy way to lithium?

those lifepo4 you first posted look like the old 0.3c calb 60ah cells I have in my scooter. emax 90s. I think that maybe people are half right about the sag, they do sag but they are also capable of 10c burst so 600amps (apparently) but only 18am continuous so to me in my scooter I have 16s but even...
by whereswally606
Dec 13, 2017 6:03 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

Well that was quick. Digikey parts (WSON lm5017) and the mcp1630t-i have arrived already as did the Farnell mcp1630t-i but not the lm5017 soic8 part. Still waiting on the new pcbs from pcbway before I can do anything really. but its looking promising now waiting on my digital pot but will do some tr...
by whereswally606
Dec 12, 2017 9:39 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

that could be good too. I actually think ill be fine once i've got either a new relay on the old logic actually turning on and off the bulb on the halogen oven or the new SCR with a digital pot diming the bulb. I used to have an old clothes iron for redoing the wax on my snowboards. I was even think...
by whereswally606
Dec 12, 2017 8:46 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

tested the unmodified halogen oven last night with the same Arduino logic board setup. I can positively say that the logic to control the SSR (solid state relay) in that the led lights when its supposes to heat to the target temp and it goes off when the real temp is over the target temp. But the re...
by whereswally606
Dec 11, 2017 10:01 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

soic8.png original wson.png newer as of today WSON .8mm pitch TI variant So I conversed with Andy (animalector) and the consensus was a redesign was probably the least trouble in terms of boards. I did this over the last couple of hours and the result it above. I think its ok, but I dunno, this is ...
by whereswally606
Dec 09, 2017 3:26 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

Project stalled till March 2018 or until TI produce the lm5017. (Which looks to be march) If anyone can make/design an adapter from TI wson package to soic8 then maybe it could be back on track. I'm sorry for the delays I've tried every option to get the missing IC but there are no alternatives with...
by whereswally606
Dec 08, 2017 5:28 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

Bit of a set back, I had an order that I either cancelled my self by accident or had eBay seller cancel without telling me. So unfortunately the lm5017 and it's little bro lm5018 in soic8 package is sold out everywhere till march/April 2018. I have sourced ten from dicikey on eBay (Chinese seller) I...
by whereswally606
Dec 03, 2017 11:58 am
Forum: Motor Technology
Topic: Another SMD lebowski PCB
Replies: 106
Views: 5076

Re: Another SMD lebowski PCB

Actual progress this time and some pics to prove it. IMG_20171203_163718.jpg toaster oven and nano v3,thermocouple and shitty 5110 nokia screen IMG_20171203_163735.jpg close up on screen IMG_20171203_163747.jpg relay giving the toaster some juice. so here are some annoying things. If the thermos cou...