implementation of the Ant BMS UART protocol for the Arudion IDE :-)
Ant Bms UART protocol thanks to // https://github.com/klotztech/VBMS/wiki/Serial-protocol
https://github.com/syssi/esphome-ant-bms :
│ ANT-BMS │
│ │
│ Comm Temp │
└─[oooo]──[oooooooo]──[oooooooo]──[oooo]─┘
││││
││││ (ESP32)
││││
│││└─ TXD (GPIO16)
││└── RXD (GPIO17)
│└─── GND (GND)
└──── VCC (3.3V)
┌──────────┐ ┌─────────┐
│ │<----- RX ----->│ │
│ ANT-BMS │<----- TX ----->│ ESP32/ │
│ │<----- GND ---->│ ESP8266 │<-- 3.3V
│ │<----- 3.3V --->│ │<-- GND
└──────────┘ └─────────┘
The connector is a 4 Pin JST 1.25mm. It's important to connect VCC too because the BMS doesn't respond/start if you connect TXD, RXD and GND only.
Supported devices
ANT-BLE16ZMUB (7-16S, 320A, 2021-11-26) // Robo Durden, who wrote this arduino code
16ZMB-TB-7-16S-300A (7-16S, 300A, 2021-08-12)
24AHA-TB-24S-200A (10-24S, 200A, 2021-09-28)
ANT 16S 100A (16S, 100A, 2020)
ANT 24S 200A (8-24S, 200A, 2020)
debug output on ESP32:
U [V]: 52.500
afU [V]: 3.280 3.280 3.280 3.281 3.284 3.284 3.284 3.285 3.284 3.282 3.285 3.284 3.285 3.285 3.285 3.284
I [A]: 1.400
iP [W]: 63
remain [%]: 91
iCapacityAh [Ah]: 280.000
iRemainingAh [Ah]: 251.132
iCycleAh [Ah]: 4169.005
iSeconds: 24404754
aiTemp [°C]: 14 14 13 17 -40
iCellMax: 8 fCellMax [V]: 3.285
iCellMin: 1 fCellMin [V]: 3.280
fCellAverage [V]: 3.283
iBattEff: 16
wMosCharge: 1 wMosDischarge: 1 wBalanced: 0
iTireLength: 0
iPulsesPerWeek: 0
wRelaySwitch: 0
fMosDisDS [V]: 0.000 fMosDisG [V]: 13.100 fMosChargeG [V]: 12.500
wCntrlEqual: 527 wEqualization: 0
wSysLog: 7239 wSysLog.Status: 111
wSysLog.BatteryNumber: 7 wSysLog.SequentialOrder: 7 wSysLog.ChargeDischarge: 1
or
remain [%]: 90 iP [W]: 317 fCellMax [V]: 3.259 fCellMin [V]: 3.251
fE_out [Wh]: 8.381 fE_in [Wh]: 0.000 fE [Wh]: 8.381
remain [%]: 90 iP [W]: 317 fCellMax [V]: 3.259 fCellMin [V]: 3.251
fE_out [Wh]: 8.425 fE_in [Wh]: 0.000 fE [Wh]: 8.425
remain [%]: 90 iP [W]: 312 fCellMax [V]: 3.259 fCellMin [V]: 3.251
fE_out [Wh]: 8.468 fE_in [Wh]: 0.000 fE [Wh]: 8.468
remain [%]: 90 iP [W]: 317 fCellMax [V]: 3.259 fCellMin [V]: 3.251
fE_out [Wh]: 8.512 fE_in [Wh]: 0.000 fE [Wh]: 8.512
...