Discussion of DIYBMS version 4 Source code and files [image] GitHub - stuartpittaway/diyBMSv4: Version 4 of the diyBMS Version 4 of the diyBMS. Contribute to stuartpittaway/diyBMSv4 development by creating an account on GitHub. (GITHUB open once project is l…

@stuart does the MQTT also receive messages to control the relays ? I mean if i have some other rules in a separate HW can i tell diyBMS using MQTT to activate one of the relays ?

[image] donnib: can i tell diyBMS using MQTT to activate one of the relays ? It doesn’t support this at the moment, it may be possible after the move to the new ESP32 controller, the existing ESP8266 is running a bit low on power to handle all these different interfaces.

@stuart That would be nice, any progress on the shunt or are you mostly busy with the new design of the diyBMS you posted earlier ?

I’m still looking at the shunt, the problem is getting that to communicate back to the controller the ESP8266 just doesn’t have enough I/O pins left for me to use, hence the new controller.

Ahh now I understand why you started working on this. Nice. Let us know when we can order the new PCB for the new controller while you work on the software.

Hi all, I’m new here and would like to order from JLCPCB, but unfortunately are the D1 “TL432G-A-AE3-R” not in stock. What is a the type of D1 what I can use for my order. [image] Thanks for support. Best regards, Tom

Best is to wait because the one replacement item is also not in stock. See this post where the issue is also addressed: [image] DIYBMS v4 diyBMS @gazzaman2k as @GeorgeBoudreau mentioned he is using the AZ432 chip which is the same design as the v4.21 boards on the LEAF ve…

Hello, new to the diyBMS. I was wondering, exactly what data is sent over MQTT? My setup: Raspberrypi 3B+ running mosquitto broker, apache webpage, phpmyadmin, sql, and node-red. I have successfully displayed my node-red workflow on the webpage and connected the UI to the mqtt broker. Now, my que…

@stuart , The new controler board… It have now 2x relays? If possible to control 4 that would be great. It’s something I really do use. Temperature turns on fans. Naturally too high to stop charge, too low to stop discharge and one to disconnect the battery in case of emergency. The J1 is used…

I’m confused here. The controller board receive power from USB, yes? Why would additional power source be needed? The relay board doesn’t seem to need external power. Probably stupid question, still in the process of building the Powerwall. After 6 days I’m ready to build the second layer. [I…