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ESP-relay-6ch

koson·ESP-relay-6ch·V2/ESP-relay-6ch-V2.kicad_pcb

ESP-relay-6ch PCB layout, top view — open source ESP32 board by koson

About the ESP-relay-6ch PCB

ESP-relay-6ch is an open source ESP32 PCB design by koson, published on GitHub. It is a 2-layer board measuring 173 × 67.8 mm, with 109 components from 29 distinct parts.

Its main chip is the ESP32-POE, from the ESP32 family. Other key parts include the L78M05ABDT-TR, D1 Mini Node MCU and LTV-817S-TA1-C. By type, the board carries 42 resistors, 24 diodes, 9 ICs, 9 capacitors, 7 connectors and 6 transistors.

From the project

ESP8266/ESP32 based board with 6x 24 VDC inputs and 6x 10A relay outputs.

ESP8266/ESP32 based board with 6x 24 VDC inputs and 6x 10A relay outputs.

This board is designed to be driven by an Olimex ESP32-POE, ESP32-POE-ISO or Wemos D1 Mini modules running Tasmota. In case the Wemos D1 Mini is used, the number of inputs and outputs will be limited to 4 each.

The design considers that the board will be mounted on a PCB DIN rail holder. The dimensions consider the holders offered by the Brazilian manufacturer Metaltex, check here for details.

ESP-relay-6ch, from the project README
From the project README

Main components on the ESP-relay-6ch

L78M05ABDT-TRESP32-POED1 Mini Node MCULTV-817S-TA1-C

ESP-relay-6ch bill of materials (BOM)

109 components, 29 distinct parts.

QtyPartRefs
1
L78M05ABDT-TR
L78M05/TO-252-2
U1
1
ESP32-POE
Olimex_ESP32-POE
U2
1
D1 Mini Node MCU
WeMos_D1_mini
U3
6
LTV-817S-TA1-C
LTV-817S
U4, U5, U6, U7, U8, U9
6
MMBT2222A
MMBT2222A/SOT-23-3
Q1, Q2, Q3, Q4, Q5, Q6
1
3x BR902V
POWER & INPUTS
J1
6
BR902V
OUT1
J2, J3, J4, J5, J6, J7
6
G5PZ-1A
K1, K2, K3, K4, K5, K6
6
391KD10
250VAC
RV1, RV2, RV3, RV4, RV5, RV6
1
SM4007PL
SM4007PL/SOD-123
D1
3
19-217/GHC-YR1S2/3T
GREEN/0603
D2, D3, D4
6
ZMM5239B
9V1/500mW
D5, D6, D7, D8, D9, D10
6
19-217/BHC-ZL1M2RY/3T
BLUE/0603
D11, D13, D15, D17, D19, D21
6
1N4148W
1N4148/SOD-123
D12, D14, D16, D18, D20, D22
2
CZRB5343B-HF
7V5/5W/SMB
D23, D24
1
CK1V470MCRE54
47uF/35V/6,3x5,4
C1
1
T491A334M035AT
0,33uF/35V
C2
1
CC0805KRX7R9BB104
0,1uF/50V/0805
C3
6
0805B333K500NT
33nF/50V/0805
C4, C5, C6, C7, C8, C9
1
0805W8F2700T5E
270R/0,125W/0805
R1
Show 9 more
QtyPartRefs
1
0805W8F3901T5E
3k9/0,125W/0805
R2
1
0805W8F6800T5E
680R/0,125W/0805
R3
6
0805W8F1201T5E
1k2/0,125W/0805
R4, R6, R8, R10, R12, R14
6
0805W8F3301T5E
3k3/0,125W/0805
R5, R7, R9, R11, R13, R15
6
0805W8F1001T5E
1k/0,125W/0805
R16, R18, R20, R22, R24, R26
6
0805W8F4701T5E
4k7/0,125W/0805
R17, R19, R21, R23, R25, R27
8
0805W8F560JT5E
56R/0,125W/0805
R28, R29, R30, R31, R32, R33, R34, R35
6
0805W8F3301T5E
10k/0,125W/0805
R36, R37, R38, R39, R40, R41
1
0805W8F2700T5E
4k7/0,125W/0805
R42

ESP-relay-6ch design files

The KiCad project lives in the koson/ESP-relay-6ch repository on GitHub; these links point at the commit this page was built from.

ESP-relay-6ch: common questions

What microcontroller does the ESP-relay-6ch use?

The ESP-relay-6ch is built around the ESP32-POE, from the ESP32 family.

How big is the ESP-relay-6ch PCB?

The ESP-relay-6ch measures 173 × 67.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP-relay-6ch?

109 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP-relay-6ch design files?

From the koson/ESP-relay-6ch repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP-relay-6ch design in my own project?

The repository has no license, so all rights stay with koson. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ESP-relay-6ch without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

Earlier revisions in the repo: ESP-relay-6ch-V1

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