[Caevlist] New around here: introduction

[Otmar Lists Account]

That’s some beautiful work! 
You might want to consider in the future using Teensy 3.2, 3.6 or 4.0 Arduino compatible CPU boards since they include the CAN controllers and have a ton of processing power built in. 

I’m looking forward to following your progress on this. 

If it helps any, I’ve got a once partially flooded BMW I3 junction box in my scrap pile with smaller DCFC contactors. 

-Otmar

> On Feb 4, 2021, at 8:54 PM, Jacob Field <jacobtimothyfield at gmail.com> wrote:
> 
> Here's the PCB from the control box. The perfboard has another 12V relay on it (CHAdeMO stations are supposed to supply power for the EV's contactors, but the current rating is only 2A -- as much as one of my EV200 contactors (With economizers!) draw when turning on. So I powered them instead from the Think's 12V battery. When I redesign the PCB I'll make it so it's properly hardware interlocked with the CHAdeMO analog signals again.). I had to make around 16 mods to this PCB before I got it to work completely. Just means I learned a lot, right? 
> 
> The blue module is the Arduino Nano MCU. There is an isolated 5V power supply, a relay for each contactor and its transistor drive circuitry, some CAN chips for the CHAdeMO and Think CAN busses, optocouplers for the 12V CHAdeMO analog signals and a Wakeup signal to the Think's battery, and various passive components. 
> <1612497851424.jpg>
> _______________________________________________
> Caevlist mailing list
> Caevlist at caevclub.org
> http://maillist.rdrop.com/mailman/listinfo/caevlist