Tesla Charger Support Thread

[bulletbug]

V4 BOM updated with corrections. Thanks for the feedback.

Thank you. I'm assuming the r20 is a 10kohm resistor? The description field is missing.

[Kevin Sharpe]

Thank you ! Will try Chademo.

This might be helpful... CHAdeMO charger using Prius Inverter

viewtopic.php?f=14&t=257&p=4350#p4350

[Jack Bauer]

BOM updated one last time.

[Rx7FD]

just installed a new tesla gen 2 charger, got it working last week. However, it only seems to charge at half the rate the charging station can handle. With my 40a charger it only charges at 20a, and with a 30a charger, it only does 15a. This is at 220v AC. I've set max charge rate to 45a.

Is there an issue with the control pilot signal, maybe firmware needs to be updated? Also, what is the difference between charge voltage and termination voltage? Can I set them to the same value? I'm charging chevy volt packs. Thanks for any help!

[tom91]

what are you settings for the charger?

As in socket type and phases?

[Rx7FD]

J1772, single phase, all 3 modules activated

[tom91]

Any screenshots of the debug while charging?

[Johaljaswant]

I just got Damien Gen 2 charger logic board.
1. Can I use Tesla wall charge station with this logic board.?
2. I am using Tesla HVJB do I have to give any enable signal to HVJB to activate the contractor for charging.?
3. In setup instructions A3 (labeled IN1) said connect your 12V- it means GND or it is 12V+.?

[Kevin Sharpe]

1. Can I use Tesla wall charge station with this logic board.?

Yes

2. I am using Tesla HVJB do I have to give any enable signal to HVJB to activate the contractor for charging.?

No

3. In setup instructions A3 (labeled IN1) said connect your 12V- it means GND or it is 12V+.?

12V

[Johaljaswant]

Thank you so much Kevin.

[Rx7FD]

I can send some screenshots of the debug on Thursday, but I remember there was no abnormal behavior.

Also, is there any difference between termination voltage and dc charge voltage? Thanks

[Kevin Sharpe]

I can send some screenshots of the debug on Thursday, but I remember there was no abnormal behavior.

Video is very useful and the more information you provide the more likely you are to get help

[Rx7FD]

ok I'll send a video, thanks for the help in advance!!

[Rx7FD]

here's a link to the video

[Jack Bauer]

Just an fyi for everyone once the current stock of Tesla boards is exhausted that will be the end of complete boards being available from the evbmw.com webshop for the forseable future. The logistical overheads are just too great and I need the bandwidth to focus on new projects. Bare pcbs will continue to be available and as always designs both present and future will remain open and free.

[tom91]

ok I'll send a video, thanks for the help in advance!!

Please do not run your charger as a 'Master' can mode, run it in can mode 'off' or 0.

What is happening is that it is dividing the current over two chargers due to it expecting a slave to be present.

[Rx7FD]

Oh that's a dumb mistake on my part, thank you for the help!

[Kevin Sharpe]

I can offer a last time buy on Tesla Gen 2 Chargers and boards;

viewtopic.php?f=12&t=444

[Jack Bauer]

Since announcing that I was stopping supply of built boards for Tesla I have had a storm of emails and contacts from people begging me to reconsider. Now, the problem of small volume board building is not something that many people encounter. I won't go into the painful details but trust me it's not easy. I spent a ton of time and legwork trying to make it work and just couldn't. Over the Christmas period I was looking again at ways to get boards built particularly for my Toyota projects. I think I hit on a super way to do this and good news is it will work for Tesla boards also.The video here gives a full explanation and I expect to be using JLCPCB for all my builds if things go to plan. So, more boards, faster and cheaper:)

[Bratitude]

Since announcing that I was stopping supply of built boards for Tesla I have had a storm of emails and contacts from people begging me to reconsider. Now, the problem of small volume board building is not something that many people encounter. I won't go into the painful details but trust me it's not easy. I spent a ton of time and legwork trying to make it work and just couldn't. Over the Christmas period I was looking again at ways to get boards built particularly for my Toyota projects. I think I hit on a super way to do this and good news is it will work for Tesla boards also.The video here gives a full explanation and I expect to be using JLCPCB for all my builds if things go to plan. So, more boards, faster and cheaper:)

Amazing, good to hear Damien. when can we expect to see new assembled and blank boards?

personally looking to build a v4board for a gen 2 charger. would it be easier to do assembly / ordering my self and just tip you on payteron?

[Kevin Sharpe]

personally looking to build a v4board for a gen 2 charger. would it be easier to do assembly / ordering my self and just tip you on payteron?

The Gen 2 charger board is moving to version 5 with a new processor (STM32) so the answer depends on how quickly you want the board and software. My understanding is that version 5 will have no new functionality over version 4.

[Bratitude]

personally looking to build a v4board for a gen 2 charger. would it be easier to do assembly / ordering my self and just tip you on payteron?

The Gen 2 charger board is moving to version 5 with a new processor (STM32) so the answer depends on how quickly you want the board and software. My understanding is that version 5 will have no new functionality over version 4.

exciting, so far sounds like a move for coast reduction/production ? any estimates on when we’ll see a public release?

[Jack Bauer]

The new Tesla Gen 2 charger logic board V5 now in production at JLC.

Main differences over previous versions :

• STM32F103C8T6 processor instead of SAM3X8E. Required as JLC do not stock the SAM3 at this point. Same processor as blue pill board.
  Deleted external CAN channel. As the new mcu only has one can controller this is required to run the charger power modules.
  Added an analog input.
  Added support for backup battery (coin cell) to allow for scheduled charging.
  Added WiFi connector for ESP32 WiFi module as used on the inverter.

So the plan is once we get boards in will start writing software for the new processor. Will have connectivity over wifi using the web interface for monitoring charge, setting parameters etc:)

[tom91]

V5 will thus no long support a Master and Slave charger setup.

Has the issue of the capacitor interfering with the lid been resolved? I do not believe this is on every cover but on most.

[Kevin Sharpe]

V5 will thus no long support a Master and Slave charger setup.

Clear opportunity for the commercial vendors to differentiate their products

Has the issue of the capacitor interfering with the lid been resolved? I do not believe this is on every cover but on most.

Can you let me know which capacitor? I'm installing some V4 boards and can verify the issue and check when V5 arrives