2 layers

Communication brain

ESP8266, Daly smart bms, HYD6000-ES

Copper layers: 2
Thickness: 1.6 mm
Parts: 24
Nets: 40
Pads: 100
Tracks, vias: 0, 0
Routed: Not yet
KiCad: KiCad 5 (file 20171130)
Created: 3 Apr 2021
Updated: 23 Jun 2026

Overview

Communication brain is an open-source printed circuit board by crodar33, from the crodar33/CommandPoint repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board with 24 parts on 40 nets.

It is built around the ESP-12E, MAX485ED and RS485, with the LM2576HVT-ADJ among its other parts. Its parts include 8 resistors, 5 ICs, 4 connectors, 3 capacitors and 2 switches. It belongs with the ESP8266 boards of this library.

Main components

README

README.md

Code and shecme for control inverter

Scheme based on ESP8266 for pool data from BSM of the battery with daly smart bms and provide battery data to SOFAR HYBRID inverter HYD6000-ES

They not compatible to each to other, so I need to make middle man for it work together.

In current implementation it can:

pull data from battery by RS485, UART
put data to the inverter by CAN and inner inverter protocol
show battery state by HTTP
show battery errors

Used ESP8266, MCP2515, MAX485 and nodeMCU, code writed on LUA Build nodemcu with I2C_MASTER_GPIO16_ENABLE and without I2C_MASTER_OLD_VERSION LUA_USE_MODULES_SOFTUART LUA_USE_MODULES_STRUCT LUA_USE_MODULES_U8G2

Parts

Qty	Value	Footprint	References
6	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R3, R4, R5, R6, R7, R8
1	0.1mF	Capacitor_THT:C_Disc_D7.5mm_W5.0mm_P5.00mm	C3
1	1.8k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2
1	1000mF	Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm	C2
1	100mF	Capacitor_THT:C_Radial_D5.0mm_H5.0mm_P2.00mm	C1
1	100mH	Inductor_THT:Choke_Schaffner_RN202-04-8.8x18.2mm	L1
1	1N5822	Diode_THT:D_DO-201AD_P15.24mm_Horizontal	D1
1	5.6k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1
1	Batt	TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x02_P3.50mm_Horizontal	J2
1	CAN	TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x02_P3.50mm_Horizontal	J4
1	ESP-12E	RF_Module:ESP-12E	U3
1	L78L33_TO92	Package_TO_SOT_THT:TO-92_Inline	U2
1	LM2576HVT-ADJ	Package_TO_SOT_THT:TO-220-5_Vertical	U1
1	MAX485E	Package_SO:SOIC-8_5.23x5.23mm_P1.27mm	U4
1	MCP2515-xSO	Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm	U5
1	Programm	Button_Switch_THT:SW_PUSH_6mm_H5mm	SW2
1	RS485	TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x02_P3.50mm_Horizontal	J3
1	Reset	Button_Switch_THT:SW_PUSH_6mm_H5mm	SW1
1	UART	Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical	J1

Questions

What parts does the Communication brain use?

24 parts, built around the ESP-12E, MAX485ED, RS485 and LM2576HVT-ADJ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Communication brain KiCad files?

From the crodar33/CommandPoint repository on GitHub, at the commit this page was made from: the board is communication_brain_board/communication_brain.kicad_pcb and its schematic communication_brain_board/communication_brain.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Communication brain design in my own project?

Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

ESP8266

Topics

esp8266 lua nodemcu-esp8266

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/crodar33-commandpoint" title="Communication brain in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/crodar33-commandpoint.jpg" alt="Communication brain" width="1200" height="900">

A picture that opens the board, for a README

[![Communication brain](https://pcbkit.io/embed/boards/crodar33-commandpoint.jpg?size=s)](https://pcbkit.io/boards/crodar33-commandpoint)

Source

Repository: crodar33/CommandPoint
Board file: communication_brain_board/communication_brain.kicad_pcb
Commit: c093d46
Licence: Apache-2.0

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