Why do you need 4 wemos d1 mini for bms? You could use an ADS1115 I2C 4ch analog to digital converter so you could measure each battery with 1 controller.
@@ouroldtruck9380 Have you looked into this diy bms system yet? github.com/stuartpittaway/diyBMS and you can buy it built if you don't like messing with smd components. shop.openenergymonitor.com/diybms/ around 40 pounds. Also for current measurement i would use an ina219 with shunt. That's what i have in my camper. I have tried these acs 758 sensors before and they are not very accurate.
@@ouroldtruck9380 With the ina219 everything will be smoother and more accurate. That is what I've been using with a 300A shunt in the past 4 years. I can remotely monitor it as well. You will have to modify the Ina219 library according to your shunt. I tried many different things to measure current at that time and only Ina219 seemed to do the job properly. It's just a suggestion.
Why do you need 4 wemos d1 mini for bms? You could use an ADS1115 I2C 4ch analog to digital converter so you could measure each battery with 1 controller.
@@ouroldtruck9380 Have you looked into this diy bms system yet? github.com/stuartpittaway/diyBMS
and you can buy it built if you don't like messing with smd components.
shop.openenergymonitor.com/diybms/
around 40 pounds.
Also for current measurement i would use an ina219 with shunt. That's what i have in my camper. I have tried these acs 758 sensors before and they are not very accurate.
@@ouroldtruck9380 With the ina219 everything will be smoother and more accurate. That is what I've been using with a 300A shunt in the past 4 years. I can remotely monitor it as well. You will have to modify the Ina219 library according to your shunt. I tried many different things to measure current at that time and only Ina219 seemed to do the job properly. It's just a suggestion.