HardLabs

CIMPLC-Hardware

jtmaston·CIMPLC-Hardware·v1/PLC-CIM.kicad_pcb

CIMPLC-Hardware PCB layout, top view — open source ESP32 board by jtmaston

About the CIMPLC-Hardware PCB

CIMPLC-Hardware is an open source ESP32 PCB design by jtmaston, published on GitHub under the CERN-OHL-W-2.0 license. It is a 4-layer board measuring 153.5 × 73.7 mm, with 124 components from 17 distinct parts.

Its main chip is the ESP32-DevKitC V4, from the ESP32 family. Other key parts include the TLP172AM(TPR,E, TLV9351IDCKR, MAX3221IDBRE4, PCA9555PW,118 and TCAN337DCNR. By type, the board carries 54 resistors, 49 ICs, 17 connectors and 4 capacitors.

It belongs with the iot & wireless designs in this gallery.

From the project

Hardware design of the CIMPLC

- Due to the fast development cycle and my inexperience with electronics, the outputs are only able to source current, not sink. The implementation, using solid-state relays, allow to source +12v when the pin is driven high, but otherwise leaves the pin floating.

- Similarly, due to my inexperience, I avoided implementing onboard power management, relying on an external +12v power supply, able to drive the pin outputs, as well as a +5v rail to power the control side. There will probably be more things , but this is all I've discovered up at this point.

Main components on the CIMPLC-Hardware

TLP172AM(TPR,ETLV9351IDCKRMAX3221IDBRE4PCA9555PW,118TCAN337DCNRSN65HVD75DRESP32-DevKitC V4AT24CM02-SSHM-B

CIMPLC-Hardware bill of materials (BOM)

124 components, 17 distinct parts.

QtyPartRefs
30
TLP172AM(TPR,E
TLP172AM_TPR,E
IC1, IC2, IC3, IC4, IC5, IC6, IC13, IC14 +22
12
TLV9351IDCKR
IC7, IC8, IC9, IC10, IC11, IC12, IC19, IC20 +4
1
MAX3221IDBRE4
IC31
2
PCA9555PW,118
IC44, IC46
1
TCAN337DCNR
IC45
1
SN65HVD75DR
IC47
1
ESP32-DevKitC V4
ESP32-DEVKITC
U1
1
AT24CM02-SSHM-B
U2
3
TB001-500-10BE
J1, J2, J3
5
TC0203620000G
J4, J5, J6, J7, J12
2
750678-1
J8, J13
6
Conn_02x01
J9, J10, J14, J15, J16, J17
1
Conn_02x05_Odd_Even
J11
4
12103C104KAT2A
C1, C2, C3, C4
30
CRCW1210267RFKEA
R1, R2, R3, R4, R5, R6, R19, R20 +22
12
RK73B2ETTD152J
R7, R8, R9, R10, R11, R12, R25, R26 +4
12
RMCF1210FT10K0
R13, R14, R15, R16, R17, R18, R31, R32 +4

CIMPLC-Hardware design files

The KiCad project lives in the jtmaston/CIMPLC-Hardware repository on GitHub; these links point at the commit this page was built from.

CIMPLC-Hardware: common questions

What microcontroller does the CIMPLC-Hardware use?

The CIMPLC-Hardware is built around the ESP32-DevKitC V4, from the ESP32 family.

How big is the CIMPLC-Hardware PCB?

The CIMPLC-Hardware measures 153.5 × 73.7 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the CIMPLC-Hardware?

124 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the CIMPLC-Hardware design files?

From the jtmaston/CIMPLC-Hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CIMPLC-Hardware design in my own project?

Yes, under the terms of its CERN-OHL-W-2.0 license, which jtmaston chose for the repository.

Can I test firmware for the CIMPLC-Hardware 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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