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ESP8266ControllerCircuit

stuartpittaway·diyBMSv4·ESP8266ControllerCircuit/ESP8266ControllerCircuit.kicad_pcb

ESP8266ControllerCircuit PCB layout, top view — open source ESP8266 board by stuartpittaway
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About the ESP8266ControllerCircuit PCB

ESP8266ControllerCircuit is an open source ESP8266 PCB design by stuartpittaway, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 75 × 30 mm, with 20 components from 16 distinct parts.

Its main chip is the WeMos_mini, from the ESP8266 family. Other key parts include the C32565 and C7605. By type, the board carries 5 connectors, 5 resistors, 3 ICs, 2 LEDs and 1 diode.

It belongs with the power & battery designs in this gallery.

From the project

Version 4 of the diyBMS

Do it yourself battery management system for Lithium ion battery packs/cells

More discussion Open Energy Monitor Forum

If you are looking for version 3 (obsolete) of this project take a look here

THIS REPOSITORY CONTAINS THE HARDWARE FOR THE SYSTEM

If you order a PCB, please use my affiliate link to help support this project JLCPCB

If you find the BMS useful, please consider buying me a beer, check out Patron for more information

ESP8266ControllerCircuit, from the project README
From the project README

Main components on the ESP8266ControllerCircuit

WeMos_miniC32565C7605

ESP8266ControllerCircuit bill of materials (BOM)

20 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
WeMos_mini
U1
1
C32565
EL3H7(B)(TA)-G
U2
1
C7605
PCF8574T/3,518
U3
4
Input
J1, J2, J3, J4
1
Optional
J5
1
Current Sensor
C_SEN1
1
Conn_01x02_Female
DEBUG1
1
Conn_01x06_Male
JRELAY1
1
WIFI RST
WIFI_RST1
1
Receive
RX1
1
Transmit
TX1
1
C2297
COMMS
D1
1
470R
R1
1
2K2
4K7
R2
1
220R
R3
2
4K7
R4, R5

ESP8266ControllerCircuit design files

The KiCad project lives in the stuartpittaway/diyBMSv4 repository on GitHub; these links point at the commit this page was built from.

ESP8266ControllerCircuit: common questions

What microcontroller does the ESP8266ControllerCircuit use?

The ESP8266ControllerCircuit is built around the WeMos_mini, from the ESP8266 family.

How big is the ESP8266ControllerCircuit PCB?

The ESP8266ControllerCircuit measures 75 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP8266ControllerCircuit?

20 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ESP8266ControllerCircuit design files?

From the stuartpittaway/diyBMSv4 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the ESP8266ControllerCircuit design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the ESP8266ControllerCircuit without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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