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Back Panel

coastalwarming·Intertidal_chamber·Hardware/Back_Panel/Back_Panel.kicad_pcb

Back Panel PCB layout, top view — open source ESP32 board by coastalwarming

About the Back Panel PCB

Back Panel is an open source ESP32 PCB design by coastalwarming, published on GitHub. It is a 2-layer board measuring 225.6 × 150.6 mm, with 174 components from 36 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the MCP23017, ADS7828E/250, IRM-30, RV-3032-C7 and SSRelay_CPC40055ST. By type, the board carries 74 resistors, 29 connectors, 23 capacitors, 15 transistors, 13 ICs and 10 fuses.

From the project

This repository is dedicated to the open-source device "Intertidal chamber". Here we'll deposit hardware, firmware and structural instructions.

Intertidal chamber ========================================

The Intertidal Environmental Chamber is a self-contained, automatic experimental system that simulates the intertidal environment. Using multiple chambers, researchers can create “virtual common garden experiments” across large geographic spans. The system plugs into a regular mains power outlet and controls other mains power devices (such as pumps and heaters) and 12 V (such as fans, LEDs, and water valves).

Back Panel, from the project README
From the project README

Main components on the Back Panel

MCP23017ADS7828E/250IRM-30RV-3032-C7ESP32-S3-WROOM-1SSRelay_CPC40055STReg.3.3V 1Ahr502cd012Reg.5.0V 1A

Back Panel bill of materials (BOM)

174 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MCP23017
IC1
1
ADS7828E/250
ADS7828
IC2
1
IRM-30
U1
1
RV-3032-C7
U2
1
ESP32-S3-WROOM-1
U3
5
SSRelay_CPC40055ST
U4, U5, U6, U7, U9
1
Reg.3.3V 1A
U8
1
hr502cd012
U10
1
Reg.5.0V 1A
U11
10
NPN_EBC
Q1, Q2, Q3, Q4, Q5, Q8, Q9, Q11 +2
5
MOS_P
Q6, Q7, Q10, Q12, Q16
1
503398-1892
J1
1
CONN_3x1-lsts-conn
P1
5
CONN_3x1-lsts-conn
P2, P4, P9, P13, P25
4
CONN_3x1
P3, P5, P8, P30
2
CONN_2x1
P6, P12
1
CONN_24x1
P10
14
CONN_3x1
P11, P14, P15, P16, P17, P18, P19, P20 +6
1
CONN_6x1
P26
1
BATTERY_Keystone_3000
BT1
Show 16 more
QtyPartRefs
10
Fuse
F1, F2, F3, F4, F5, F7, F8, F9 +2
2
SW_PUSH
SW1, SW2
4
DIODE
D1, D2, D3, D4
1
1N4148
D9
1
MMSZ5233B
D11
1
12uH
L1
6
0.1uF
C1, C2, C3, C8, C11, C12
2
10uF
C6, C7
12
100nF
C9, C13, C14, C15, C16, C17, C18, C19 +4
3
10uF
C10, C24, C25
22
10k
R1, R3, R4, R5, R7, R8, R9, R13 +14
7
4k7
R2, R29, R43, R44, R45, R46, R56
6
470R
R6, R15, R18, R21, R24, R42
13
1k
R10, R14, R17, R20, R27, R28, R30, R31 +5
21
100k
R11, R12, R25, R26, R33, R34, R35, R36 +13
5
0R
R70, R71, R72, R73, R74

Back Panel design files

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

Back Panel: common questions

What microcontroller does the Back Panel use?

The Back Panel is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Back Panel PCB?

The Back Panel measures 225.6 × 150.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Back Panel?

174 components, from 36 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 Back Panel design files?

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

Can I use the Back Panel design in my own project?

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

Can I test firmware for the Back Panel 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.

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