Docs I found:
Note that v3.8 has onboard extra protection for p259 outputs, mcp3208 inputs, wheelspeed inputs and ETC (electronic throttle) output PWM signal.
- request v3.8 in the order comment if you intend to assemble your device yourself, saves a lot of time. Less wires needed (usually no wires at all), just add econoseal connectors and TO-220 FETs + IGBTs and clamp inside case.
- no DPAK pads for the 2 specfet though, so if you really need those, request v3.7 explicitely
- software-wise v3.8 is 100% compatible with earlier v3.x versions: same firmware, same VemsTune
pics of factory assembled vems:
(pics are highres to find the soldering points)