I've got these cables in from amazon and they are way too big. I need to be able to plug into the GPS port on the JKBMS. The JST 2.0 cables are almost twice the size of the port on the BMS
I've got these cables in from amazon and they are way too big. I need to be able to plug into the GPS port on the JKBMS. The JST 2.0 cables are almost twice the size of the port on the BMS
EDIT: It's JST 1.25, 4 PIN
This one will only work with Victron as it runs on their GX system.is it possible to write driver for non victron AC inverter
Is there any easy place to steal 5v or 3.3v on jk bms? I’m considering 48v to 5v buck converter and using the vbatt pinon the jk serial port. Span02C-05 at jameco.The output on the RS485 port on the BMS is TTL (RS232) - I know, confusing. You should be able to talk to it using a regular TTL/USB converter. The pin-out is in the description of my Gitrhub repo here: https://github.com/PurpleAlien/jk-bms_grafana
Once you have that hooked up, you can use the driver mentioned in this topic to have VenusOS interact with it.
Is there any easy place to steal 5v or 3.3v on jk bms?
Running an esp32 module for wifi streaming of data to a Mqtt server.I've not checked; but I don't think so. What do you want to use it for?
I'm just using a small buck converter mounted under the ESP32. It's the solder points between the socket strips. The 4pin cable plugs into the JBD BMS serial portRunning an esp32 module for wifi streaming of data to a Mqtt server.
Hi!The BMS that people have the least querries/issues are the JBD or JKBMS (JKBMS is also a good option but it seems that the SOC calc for the JBD is a little bit smarter/better. The JKBMS app is easier and less complex).
The Daly gets by far the most issues logged and it's communication protocol is also a bit limiting.
Yes. For the price JBD and JKBMS are both great options. I've just added the ECS GreenMeter which is of great quality and more accurate measurements but it will cost a lot more.After this time, do you maintain your preference with JDB and JK?
Thanks for your prompt and lengthy reply!Yes. For the price JBD and JKBMS are both great options. I've just added the ECS GreenMeter which is of great quality and more accurate measurements but it will cost a lot more.
It might be worth mentioning that if you don't already own a RPi and need to buy one for this, then you might be better to look at the Victron CerboGX. In the end the Pi will not be that much cheaper (except if you can get a Pi Zero2 model perhaps). The reason I say this is that a Ve.Direct cable cost a fraction of a Ve.Direct->USB. You also don't need a USB-MK3 device for the Multiplus and you don't need any other PI HATs (RS485), Hubs or a power supply from your DC battery directly. So make sure you add all that up in your cost. You can also tinker the same as you would on a Pi, except if you need the Pi GPIO for something spesific.
So my choice would be a CerboGX if I start from nothing.
Then I would look at the Pi Zero 2. At the price, you get a Pi3+ with a little less memory, but you need to add a USB Hub.
Then Pi3/Pi4 (what you can get your hands on as stock still seem to be a problem)
If you plan on running NodeRed with a lot of nodes on VenusOS as well, then the faster Pi4 with more RAM will be better, else it will not matter much.
Enjoy the journey