BMS-and-offgrid-photovoltaic-management-system
kwiecinski
Project contains BMS for lead-acid batteries and ESP-based board used to pull information from EASUN offgrid inverter, energy meters and sensors. It show informations od displays and use ESPhome to send it to Home Assistant..
Components (66)
| Reference | Value | Description |
|---|---|---|
| MOD1,MOD2 | LM2596-Step-Down | |
| Q1-Q3,Q5,Q8-Q12 | BC817 | 0.8A Ic, 45V Vce, NPN Transistor, SOT-23 |
| Q4 | BC556 | 0.1A Ic, 65V Vce, PNP Small Signal Transistor, TO-92 |
| Q6,Q7 | BSS138 | 50V Vds, 0.22A Id, N-Channel MOSFET, SOT-23 |
| U1 | PCF8574 | 8 Bit Port/Expander to I2C Bus, DIP/SOIC-16 |
| U2 | ST485 | Half duplex RS-485/RS-422, 5 Mbps, ±15kV electro-static discharge (ESD) protection, no slew-rate, with low-power shutdown, with receiver/driver enable, 256 transceiver on the bus - 40 to 85 °C, SOIC-8 |