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STD ESPHome Smart Battery

Project Status: Ongoing

License: MIT License

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Creation time: 2023-09-06 12:28:25
Update time: 2023-10-20 12:27:14
Description

DYI smart battery
- Built on ESP32
- Using bluetooth to communicate with BMS

- Relay module connection to toggle external balancer

- External display with button

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity link
1 to SHT21 H1 HDR-TH_4P-P2.54-V-M 1 Header-Male-2.54_1x4
2 to Display board H2 HDR-TH_5P-P2.54-V-M 1 210-91-05GB01
3 IRF520NPBF Q1 TO-220-3_L10.0-W4.5-P2.54-T 1 IRF520NPBF
4 NODEMCU-32SLUA U1 COMM-TH_NODEMCU-32SLUA 1 NODEMCU-32SLUA
5 to Relay module U2 HDR-TH_3P-P2.54-V-F 1 KH-2.54FH-1X3P-H8.5
6 5V DC U3 CONN-TH_XY308-2.54-2P 1 XY308-2.54-2P
7 to Main board H4 HDR-TH_5P-P2.54-V-M 1 210-91-05GB01
8 button6*6*8 KEY1 KEY-TH_4P-L6.0-W6.0-P4.50-LS7.5 1 button6*6*8
9 SSD1306-128x64-OLED-I2C U4 SSD1306_DISPLAY-I2C 1 SSD1306-128x64-OLED-I2C wICUcuL3l
10 XL4015 MODULE U5 XL4015-5A-MODULE 1 MODUL STEPDOWN XL4015 COPY
11 1-Channel_Relay_Module U6 RELAY MODULE 1 RELAYS 1 1-Channel_Relay_Module

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