Good news is the charger board fits perfectly. Anyone spot the bad news? A free V2 board to the lucky contestant

 

The lower right mounting hole is in the wrong place?

 

USB unusable while mounted

But very nice fit otherwise.

 

Tom wins the prize

 

Yes, the placement of the USB is not ideal but for the time being you could just hack the end off of a USB cord and solder the wires into the hole. It works perfectly fine but does mean you're stuck with that one cord. Isn't making circuit boards just so much fun?!

 

I'll probably just cut a bit out of the aluminium surround to let the plug fit. I'm lazy

 

First prototype of the charger logic board picked up today

 

Got a three phase outlet? Or a 48A outlet?

 

I wired my workshop with a 50A breaker so full power should be possible

 

going to need an upgrade for the open source supercharger

 

I had a question. Does this charger work on two phase or single phase?

 

It will run on single or two phase or three phase.

 

That's awesome. Keep up the good work! I've been following this thread for a while. Wish I had been able to developed my programming and communication skills but I am stuck in electrical and electronics.

 

woot great news damien.

on my end I finally got the Gen 3 charger wired up and it's now reading the DC voltage correctly. So the can messages appear to be the same format from Gen2. Next step will be to cut the traces to the Phase Control board and replay the arduino Tom File to see if I can charge my battery pack.

Will do later today and let you guys know if it also works.

 

Hooked up a charger board on usb and loaded blink. To my utter surprise it worked

Nice work annerajb. Keep us posted. Don't forget you have about a 1 second window to connect mains AC at the right time in the CAN capture. Any earlier or later and it won't start charging.

 

Did you manage to run the provide code i put together on the board?

I want to see charge pump some pixies.

 

Sorry not yet Tom. Not enough hours in the day Will get to it.

 

I finally had time to cut the traces on one of the phases, Hook up a few wires and play around with the enable lines and the lab power supply.
Manage to turn it on by itself without the control board bugging me.
Gonna see if tonight I can start sending it the control commands for a charge from the arduino files.

 

Getting ready to test the charger logic board

 

Christmas Lights

 

...aaannnd CAN bus works ...

 

Who's software are you using?

Feel free to grab bit of the arduino code i threw togethor

 

Using your code now Tom. Just getting a test setup in place today.

 

Would anyone with one of these chargers be willing to do some software development in exchange for a free board?

 

Wish I had one of those chargers, or any of the tesla stuff besides a battery.

Love to contribute for sure.

Let me know if you want some features made that dont require testing?

For example writing the votalge and current setpoint to flash once you programmed it.

This way it will boot and start charging if 12V is present and we can have it command the charges only when AC is detected.

 

Thanks Tom. Sadly, genius here forgot to add an eeprom chip to this version of the board so the set points will need to be in the program. Will add to next rev.

The charger is a bit weird in that if ac is present before it asks for it it will fault out.

 

Now that might not be true.

When you apply AC to the module and then send the 's' command to activate it, you can see how much you can wait before requesting it to charge.

Built right into the software i made.

https://store.arduino.cc/usa/arduino-due

512 KB of flash.

 

huh.....I thought the Due had no data memory..

 

It doesn't exactly. But, you can write to the FLASH memory from within the program. This can be used as a form of data memory. However, unfortunately all of FLASH is zapped at once when you flash a new program to it so if you use FLASH memory it'll get zapped each and every time you upload a new program to it. That's SUPER annoying hence the use of an EEPROM chip.

The whole chip erase is more of a design issue with BOSSAC than anything else. If you wrote your own firmware updater it could rewrite only portions of FLASH and thus allow other parts to be used for storage. But, even then, the SAM3X has an erase pin and we all tend to expose it somewhere on the PCB. If someone pushes that button it's lights out for your stored settings in FLASH.