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Hallo, This below is what I have done: I have a DeliGreen (Daly) 8S 24V Smart BMS, and as always there is only 1 (one) UART port, either for Bluetooth connection (Smartphone application) or for USB serial cable connection (PC application). But, I want to monitor the BMS both wirelessly; using...

Hallo... Here it is...... The flow that I created for the BMS Monitoring & Read/Write parameter settings. It is a long and complicated flow, not 100% finished yet though, especially for the write parameter setting parts, only 6-7 parts I have made, Battery Code is there but not yet finished, and...

Yes, I can make changes on the parameters as well, (not only monitoring). It is still on going process, not 100% finished, (I am still working on it), because not every day I play with Node-RED, only when there is spare time. Below example from my Node-RED dashboard, on the Write Parameters...

Hi, Yes, my Node-RED flow was made for 8S configuration, as this is in my case. If you have 16S, then of course it needs to be modified to accommodate the other 8 additional cells. I understand, it is not simple to modify this flow, (it is a bit complicated), but what I can suggest for your...

Yes, ESP-01 also uses the same chip; ESP8266, this can be used as well.....

Hi, The SOC command is integrated with the RTC command, but looks like Daly is not processing the RTC, so ignore the RTC for the moment. To update the SOC you need to send this below command via serial: a5 40 21 08 yy mm dd hh mm ss soc soc chk yy = year mm = month dd = day hh = hour mm =...

I think the link that you gave "The Binary Protocol", is quite informative, even much more complete. Below snapshots after retrieving the BMS data and use them in the Node-RED, (not 100% finished yet):

Hi, Yes, you will need to inject some strings, here you will need to know the "Daly BMS UART Communication Format", for Read & Write, (like = a5 40 xx xx xx -or- a5 80 xx xx xx / a5 01 xx xx xx / etc.).... But it is a long story to know/to explain all the specific commands. I think there are...

Hi, If a serial port combiner is not needed, then CD4001 is not necessary, this means the 1x BMS UART port will only be connected to 1x device (the ESP only), the Bluetooth dongle is not used. Basically the ESP Bridge (ESP8266/ESP32) is to replace the physical UART cable, means that we can...

Hi, I attach an excel file (in zip), it is just a collection of UART packets that work for my BMS. I collected them by sniffing the serial data traffic, and use them for my Node-RED setup. About the communication module address, (byte 0x80 or 0x40); the byte 0x40 works for my BMS. I think I have...

Hi, Try using JeeLabs ESP-Link firmware, flash it into your ESP8266, this one works. Tasmota does not work so far, even already enable #define USE_TCP_BRIDGE, the 13-byte serial packet data is always fragmented using Tasmota.

Yes, this should work as well. This will need 4025. I can see on your diagram you wrote 4011 as well, beside 4001, I believe you mean these are all 4001 (not 4011). 4011 is a quad NAND gate IC, although it can be used as the Inverter as well. Tx combiner like this should work fine, as long as...

Hi, The CD4001 (NOR Gates) is used to build the "combiner", it is necessary if we want to combine the signals from WiFi Bridge (ESP) and Bluetooth dongle. It is possible to monitor the BMS using the ESP.