Yep I still have these boards but you need to be very comfortable soldering the pcb components, wiring, and testing with a multimeter to put it all together
You also need to be happy hooking up the arduino boards to a PC (via USB) and uploading the software to each board.
I can only speak from my experience using the board with a uni 8 24v motor controller. Other controllers I do not know about. In the 24v configuration the board is simply a monitor, i.e. it doesn't control the motor in any way, it simply monitors its temp, voltage, current etc. Which means as a pedelec it will not work. In 12V mode the board controls the motor and is turned on/off via a relay which is the same as a standard C5 so I don't think this is the best idea for your trike.
Regardless of the mode (12V or 24V) the board itself requires a 12V power supply, so in 24V mode we use 2 12V batteries and one of the batteries powers the board.
As Dave had said the touchscreen/arduino boards are about £35 on ebay. I made this early last year and I imagine there are better screens out there now, though the software is pretty much tied to that type of touchscreen (320x240) by sainsmart.
On the whole with all the components/screen/arduinos it probably adds up to about £100.
Did you ever get your 24V board working? I know you were having problems with the motor temp reading?
posted on: 27/04/2014 14:54:15