ESP8266ControllerCircuit
About the ESP8266ControllerCircuit PCB
ESP8266ControllerCircuit is an open source ESP8266 PCB design by Arkariusz, 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
Do it yourself battery management system for Lithium ion battery packs/cells
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 find the BMS useful, please consider buying me a beer, check out Patron for more information
This repository contains the hardware designs, generally in KiCad format. Unless you are changing the design, you don't need to use/install KiCad, just use the premade files.
Main components on the ESP8266ControllerCircuit
ESP8266ControllerCircuit bill of materials (BOM)
20 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | WeMos_mini | wemos-d1-mini-with-pin-header | U1 |
| 1 | C32565 EL3H7(B)(TA)-G | SOP-4_4.4x2.8mm_Pitch1.27mm | U2 |
| 1 | C7605 PCF8574T/3,518 | SOIC-16W_7.5x10.3mm_Pitch1.27mm | U3 |
| 4 | Input | JST_PH_S2B-PH-K_02x2.00mm_Angled | J1, J2, J3, J4 |
| 1 | Optional | Pin_Header_Straight_1x03_Pitch2.54mm | J5 |
| 1 | Current Sensor | Pin_Header_Straight_1x03_Pitch2.54mm | C_SEN1 |
| 1 | Conn_01x02_Female | Pin_Header_Straight_1x02_Pitch2.54mm | DEBUG1 |
| 1 | Conn_01x06_Male | Pin_Header_Straight_1x06_Pitch2.54mm | JRELAY1 |
| 1 | WIFI RST | Pin_Header_Straight_1x02_Pitch2.54mm | WIFI_RST1 |
| 1 | Receive | JST_PH_S2B-PH-K_02x2.00mm_Angled | RX1 |
| 1 | Transmit | JST_PH_S2B-PH-K_02x2.00mm_Angled | TX1 |
| 1 | C2297 COMMS | LED_0805 | D1 |
| 1 | 470R | R_0805_HandSoldering | R1 |
| 1 | 2K2 4K7 | R_0805_HandSoldering | R2 |
| 1 | 220R | R_0805_HandSoldering | R3 |
| 2 | 4K7 | R_0805_HandSoldering | R4, R5 |
ESP8266ControllerCircuit design files
The KiCad project lives in the Arkariusz/bms 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 Arkariusz/bms 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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