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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    See Jeremy's post on page 2 4. The speed settings (used when programmed in switch mode) are nominal percentages of the maximum allowable duty cycle, so directly control the motor maximum no-load speed. For example, if programmed to 30%, 70% and 100% the controller will only allow the motor to...
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    Charger Help

    Attached is the charge profile for the SLA charger, the blurb lists the voltage as 27.4 and 29.2v If the 29.2v is the upper DC voltage then its just about on the money, however, I'm unsure if Li-ion can be charged with an SLA charger. The battery also houses a BMS I should add....
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    Charger Help

    Thanks for the ideas. I've located this SLA charger that seems it could work: http://cpc.farnell.com/1/1/47554-charger-24v-2a-lead-acid-ac0224a-ideal-power.html or I could try and modify this 60w 24v 'Meanwell' SMP ...
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    Charger Help

    Hi Dogman, Lithium-ion I think, listed as a 26v system. I was looking at these buck converter modules last night but don't think they will be suitable...
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    Simple ebike 'fuel gauge'

    Thank you Jeremy! spinningmagnets, sorry only the one...
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    Charger Help

    Hi, I'm looking for some advice / guidance on a 'travel' charger please. One of my bikes is a Kalkhoff Panasonic drive bike but the 'base station' charger is too bulky to take with me touring. Kalkhoff sell a travel version of the charger but is costs an eye watering $200. So I'm trying to...
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    Simple ebike 'fuel gauge'

    Some pictures as promised, hopefully they may be of use to some. Fitting was tight in the controller, in hindsight I should have used smaller .25w resistors and also removed the DIL sockets to lower the height. I could have reduced the strip board size a touch as well...anyhow it works, so far...
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    Simple ebike 'fuel gauge'

    just wanted to post and say thank you to Jeremy, I've now tested the gauge and it seems to work. I just need to house it neatly and tidy the wiring up. I'm only drawing 21amps peak but the gauge correctly measured this giving a two thirds FSD reading. I haven't calibrated the shunt but I...
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    Simple ebike 'fuel gauge'

    I've managed to finish my version of Jeremy's battery meter but it may not fit inside the controller. All seems to work but I've not yet fitted it to the bike. Jeremy, is there any calibration needed for the shunt? Also, the reset switch clears NVRAM for the accumulated Ah? and lastly what is...
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    Simple ebike 'fuel gauge'

    Jeremy, what resistor values did you use for the meter PD? Thanks.
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    Simple ebike 'fuel gauge'

    OK got it working, neither of the two USB to serial devices I had operated correctly. Luckily I had in my spares box an old USB to DB9 converter from Belkin I think that uses the Prolific chip set. Using a Female DB9 I was able to connect to the Picaxe chip and testing the comm port gave -0.5v...
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    Simple ebike 'fuel gauge'

    This is such a neat idea Jeremy I decided to give it a go. I've had to lay the cct out on some strip board so its not as neat as your layout but I think it'll fit inside the controller still. Circuit wise I'm OK with for building but I'm having a devil of a job programming, well actually...
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    headline 300w on 57V update

    Pedal motion sensor (Pedelec). I've just upgraded my 116 6 FET controller thanks to the advise from Jeremy. I went with IRFB3077 FETs, I won't be using more than 48v, and I also upgraded the phase and input caps to Panasonic NHG. These are a higher voltage rating (originals where 50v) and low...
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Hi Jeremy, many thanks again for the help. I've upgraded the controller with Panasonic NHG and IRFB3077 FETs, the FETs seem to have made a difference to the temperature as the controller is now just warm to the touch. Another question if I may: The LVC setting in PD has gaps in it IE: the...
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Hi Jeremy, Many thanks for taking the time to reply. Seems I may be worrying about the current unduly... what you are saying with regard to the FETs is interesting, my particular controller is populated with IRF3205 FETs, Rdson of 8mohm I think, so with a conservative 20amps they would...
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Jeremy I wonder if you could help. I've been messing about with the parameters on an E-Crazyman 6-fet 116 based controller that's driving an SWXB motor. I understand the current limit control is crude in operation, however, I'm finding the rated current limit I set in Parameter Designer is...
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Oh, the penny may have dropped..... http://www.aerodesign.de/peter/2001/LRK350/SPEEDY-BL_eng.html
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Thanks Jeremy, I' m still not sure I understand...is this fixed PWM Frequency the sampling frequency? And it has nothing to do with the duty cycle that determines motor speed and current?
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    Keywin E-bike Lab Parameter Designer Software Manual-ver 1.2

    Jeremy, could you expand on point 2 please. Could you clarify the 15khz PWM signal and the difference with the commutation frequency...I've measured single phase on my geared Bafang motor using the 6 fet 116 based controller and it worked out to 111 to 160hz (low and high setting). Where does...
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    Infineon: Reading stock values before mods

    I've been conversing with jbond over on the UK Pedelec forum. The controller is a 6 fet one based on the 116 from e-crazy man. Currently it's set for 20amp on 36v, it's replaced a single speed 15amp one on a UK road legal bike. The battery is 10ah and seems to be coping OK with the new...
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