Skip to the content
PCBKitNew board
4 layers31.4 × 70 mmUPLC Panel, the printed circuit board in 3D

UPLC Panel

fredriknk/uPLC-Stack9

Quick note, this is then panelization repo, head for the individual repos to get design files.

Open in PCBKitView on GitHub.kicad_pcb
Size
31.4 × 70 mm
Copper layers
4
Thickness
1.6 mm
Parts
226
Nets
115
Pads
496
Tracks, vias
1,154, 285
Pours
26
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
14 Oct 2024
Updated
9 Apr 2025

Overview

UPLC Panel is an open-source printed circuit board by fredriknk, from the fredriknk/uPLC-Stack repository on GitHub. It is a 4-layer board of 31.4 × 70 mm with 226 parts on 115 nets, routed with 1,154 tracks and 285 vias.

It is built around the ESP32-C3-WROOM-02-N4, AP63201WU and ADS1115IDGSR, with the TBD62003AFWG, LP5907MFX-3.0/NOPB and RTT02000JTH among its other parts. Its parts include 38 capacitors, 38 resistors, 11 ICs, 11 diodes and 6 connectors. It belongs with the ESP32 and RISC-V boards of this library.

Main components

12

README

README.md

uPLC - Miniaturized Distributed Monitoring and Control

Quick note, this is then panelization repo, head for the individual repos to get design files.

PcbWay Sponsorship

Thanks so much to PCBWay for sponsoring my first assembly run for this project, they deliver awesome quality assembly service as always with 6 perfectly soldered dual sided prototypes delivered at my door in less than 2 weeks from ordering. All components perfectly placed and good quality 4 layer pcb's. I love the look and legebility of the 0.9mm inverted silkscreen texts. They even pointed out some reccomended component replacements due to NRND bom items. So Look at this beautiful trio of boards ready for automating every dumb device in my house.

uPLC-Trio uPLC-Trio-Bottom

ESP-Home code examples are comming soon.

The uPLC (micro Programmable Logic Controller) is a compact (22x32mm) I/O controller powered by the ESP32, designed to automate various tasks around you. So far, three versions have been developed. All versions are generally 24V-tolerant for digital I/O, except for the analog inputs, and feature a wide-range 3.8-24V buck regulator for power input.

The primary purpose of the uPLC is to "smartify" devices by integrating them with ESPHome. But it can also function as a direct, point-to-point PLC, using ESP-NOW for wireless communication, replacing traditional wired connections at a cost of latency.

Available Versions:

Coming Soon:

  • uPLC-COMM: For sensor connections- SPI, I2C, SDI12 support
  • uPLC-4_20: Current loop for industrial sensors
  • uPLC-TBD: If you have a good idea give me a message or issue

Specifications

ParameterDescription
Input Voltage3.8-24V
Current ConsumptionTBD: WiFi Active: ##mA, Radio Off: ##mA, Deep Sleep: ##uA
Communication2.4GHz Wi-Fi, UART (TTL level)
Baud Rate115200
PCB Size22 x 31.1 mm
PCB Material1.6mm FR4, HASL lead-free, 4-layer
Case SizeX x X x X mm (TBD)

uPLC-Stack:

To facilitate manufacturing and development, I've created a panelized version using KiKit scripting. The uPLC-Stack includes two units of each version, making it easier to assemble and test multiple variants in one go. Im planning on

Running the Panelization Script:

To use the panelization script, clone all the uPLC repositories and organize them in a directory one level back from the uPLC-Stack folder. This allows the KiKit script to automatically pull in all required files for panelizing.

Stack Images

  • Perspective View
    Front

  • Top View
    Front

  • Side View
    Side

  • Bottom View
    Back

Parts

226
QtyValueFootprintReferences
40NPTHNPTHKiKit_MB_1_1, KiKit_MB_1_2, KiKit_MB_1_3, KiKit_MB_1_4, KiKit_MB_1_5, KiKit_MB_2_1, KiKit_MB_2_2, KiKit_MB_2_3, KiKit_MB_2_4, KiKit_MB_2_5, KiKit_MB_3_1, KiKit_MB_3_2, KiKit_MB_3_3, KiKit_MB_3_4, KiKit_MB_3_5, KiKit_MB_4_1 +24
2410KResistor_SMD:R_0402_1005MetricR1.0, R1.1, R1.2, R2.0, R2.1, R2.2, R3.0, R3.1, R4.0, R4.1, R4.2, R10.2, R11.2, R12.0, R12.2, R16.0 +8
190.1uFCapacitor_SMD:C_0402_1005MetricC2.0, C2.1, C2.2, C3.0, C3.1, C3.2, C6.0, C10.0, C13.0, C14.0, C15.0, C16.0, C17.0, C18.0, C19.0, C20.0 +3
120RJumper:SolderJumper-3_P1.3mm_BridgedSMD12_0402JP1.1, JP2.1, JP3.1, JP4.1, JP5.1, JP6.1, JP7.1, JP8.1, JP9.1, JP10.1, JP11.1, JP12.1
111N5819WSDiode_SMD:D_SOD-323D1.0, D1.1, D1.2, D2.0, D2.1, D2.2, D3.0, D3.1, D4.0, D4.1, D4.2
922ufCapacitor_SMD:C_0402_1005MetricC8.0, C8.1, C8.2, C11.0, C11.1, C11.2, C12.0, C12.1, C12.2
620pfCapacitor_SMD:C_0402_1005MetricC1.0, C1.1, C1.2, C4.0, C4.1, C4.2
410uFCapacitor_SMD:C_0805_2012MetricC5.0, C5.1, C5.2, C7.0
4499RResistor_SMD:R_0402_1005MetricR8.0, R9.0, R10.0, R11.0
3182kResistor_SMD:R_0402_1005MetricR14.0, R14.1, R14.2
332.768khz 3215 12.5pfCrystal:Crystal_SMD_3215-2Pin_3.2x1.5mmY1.0, Y1.1, Y1.2
34.7uHInductor_SMD:L_1008_2520MetricL1.0, L1.1, L1.2
362kResistor_SMD:R_0402_1005MetricR15.0, R15.1, R15.2
3AP63201WUPackage_TO_SOT_SMD:TSOT-23-6U1.0, U1.1, U1.2
3Conn_01x06_PinTestPoint:TestPoint_Pad_1.0x1.0mm_6padJ1.0, J1.1, J1.2
3ESP32-C3-WROOM-02PCM_Espressif:ESP32-C3-WROOM-02U3.0, U3.1, U3.2
3G***esprelay:kibuzzard-65D460A0kibuzzard-65D460A0.0, kibuzzard-65D460A0.1, kibuzzard-65D460A0.2
3G***kibuzzard-65D7177Bkibuzzard-65D7177B.0, kibuzzard-65D7177B.1, kibuzzard-65D7177B.2
3G***kibuzzard-65D71774kibuzzard-65D71774.0, kibuzzard-65D71774.1, kibuzzard-65D71774.2
3G***kibuzzard-65D49092kibuzzard-65D49092.0, kibuzzard-65D49092.1, kibuzzard-65D49092.2
3G***esprelay:kibuzzard-65D36177kibuzzard-65D36177.0, kibuzzard-65D36177.1, kibuzzard-65D36177.2
3G***esprelay:kibuzzard-65D46022kibuzzard-65D46022.0, kibuzzard-65D46022.1, kibuzzard-65D46022.2
3G***kibuzzard-65D7176Dkibuzzard-65D7176D.0, kibuzzard-65D7176D.1, kibuzzard-65D7176D.2
3G***esprelay:kibuzzard-65D3616Ekibuzzard-65D3616E.0, kibuzzard-65D3616E.1, kibuzzard-65D3616E.2
3G***esprelay:kibuzzard-65D46066kibuzzard-65D46066.0, kibuzzard-65D46066.1, kibuzzard-65D46066.2
3G***kibuzzard-65D74DE1kibuzzard-65D74DE1.0, kibuzzard-65D74DE1.0, kibuzzard-65D74DE1.1
3SM12B-GHS-TB(LF)(SN)Connector_JST:JST_GH_SM12B-GHS-TB_1x12-1MP_P1.25mm_HorizontalJ2.0, J2.1, J2.2
2100RResistor_SMD:R_0402_1005MetricR13.0, R13.1
2309kResistor_SMD:R_0402_1005MetricR7.0, R7.1
2G***kibuzzard-65D74DFBkibuzzard-65D74DFB.0, kibuzzard-65D74DFB.1
2G***kibuzzard-65D74DEEkibuzzard-65D74DEE.0, kibuzzard-65D74DEE.1
2G6K-2F-YRelay_SMD:Relay_DPDT_Omron_G6K-2F-YK1.2, K2.2
2TBD62003AFWGPackage_SO:SOIC-16_3.9x9.9mm_P1.27mmU2.1, U2.2
1ADS1115IDGSPackage_SO:TSSOP-10_3x3mm_P0.5mmU2.0
1G***kibuzzard-65DC95EFkibuzzard-65DC95EF.0
1G***kibuzzard-65DC9610kibuzzard-65DC9610.0
1G***kibuzzard-65D8B104kibuzzard-65D8B104.1
1G***kibuzzard-65D8B0F8kibuzzard-65D8B0F8.1
1G***esprelay:kibuzzard-65D3620Ekibuzzard-65D3620E.2
1G***esprelay:kibuzzard-65D361E9kibuzzard-65D361E9.2
1G***kibuzzard-65D8B0E2kibuzzard-65D8B0E2.1
1G***kibuzzard-65D8B10Ckibuzzard-65D8B10C.1
1G***esprelay:kibuzzard-65D36206kibuzzard-65D36206.2
1G***kibuzzard-65D8B28Ckibuzzard-65D8B28C.1
1G***esprelay:kibuzzard-65D3619Dkibuzzard-65D3619D.2
1G***kibuzzard-65DCE4DEkibuzzard-65DCE4DE.0
1G***kibuzzard-65D8B343kibuzzard-65D8B343.1
1G***kibuzzard-65D8B0EDkibuzzard-65D8B0ED.1
1G***kibuzzard-65DC961Dkibuzzard-65DC961D.0
1G***kibuzzard-65DCA831kibuzzard-65DCA831.1
1G***kibuzzard-65D8B297kibuzzard-65D8B297.1
1G***esprelay:kibuzzard-65D361E1kibuzzard-65D361E1.2
1G***esprelay:kibuzzard-65D361A7kibuzzard-65D361A7.2
1G***kibuzzard-65DC95DAkibuzzard-65DC95DA.0
1G***esprelay:kibuzzard-65D361B0kibuzzard-65D361B0.2
1G***kibuzzard-65D8B121kibuzzard-65D8B121.1
1G***esprelay:kibuzzard-65D361FDkibuzzard-65D361FD.2
1G***kibuzzard-65DC95E5kibuzzard-65DC95E5.0
1G***esprelay:kibuzzard-65D361F2kibuzzard-65D361F2.2
1G***kibuzzard-65D6FF37kibuzzard-65D6FF37.2
1G***kibuzzard-65DC95F6kibuzzard-65DC95F6.0
1G***esprelay:kibuzzard-65D361D3kibuzzard-65D361D3.2
1LP5907MFX-3.0Package_TO_SOT_SMD:SOT-23-5U4.0
1MCP4725xxx-xCHPackage_TO_SOT_SMD:SOT-23-6U5.0

Questions

How big is the UPLC Panel PCB?

It measures 31.4 × 70 mm and has 4 copper layers, 1.6 mm thick.

What parts does the UPLC Panel use?

226 parts, built around the ESP32-C3-WROOM-02-N4, AP63201WU, ADS1115IDGSR and TBD62003AFWG. 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 UPLC Panel KiCad files?

From the fredriknk/uPLC-Stack repository on GitHub, at the commit this page was made from: the board is CAD/Panel/uPLC-Panel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

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

Its repository states no licence, so its author keeps all rights: ask fredriknk before reusing the design.

Similar boards

  • 4 layers31.4 × 22 mmUPLC Digital, the printed circuit board in 3D

    UPLC Digital

    fredriknk/uPLC-Digital

    I now have two prototypes of the uPLC-Digital so ESP-Home integrations will come soon.

    64 parts5MIT
  • 4 layers31.4 × 22 mmUPLC Analog, the printed circuit board in 3D

    UPLC Analog

    fredriknk/uPLC-Analog

    I now have two prototypes of the uPLC-Analog so ESP-Home integrations will come soon.

    69 parts4MIT
  • 4 layers31.4 × 22 mmUplc, the printed circuit board in 3D

    Uplc

    fredriknk/uPLC-Relay

    I now have two prototypes of the uPLC-Relay so ESP-Home integrations will come soon.

    53 parts4MIT
  • 2 layers52.3 × 20 mmEsprelay, the printed circuit board in 3D

    Esprelay

    fredriknk/esprelay

    ESP8266 small signal relay module utilizing an ESP-12-F wifi module for communication and MCU, and has two 2.5-25V inputs, and a single 25v, 100ma high speed open drain output through a TBD062003 DMOS transistor array…

    42 partsMIT
  • 6 layers81.5 × 50 mmPicard, the printed circuit board in 3D

    Picard

    weiiwang01/picard

    PiCard is a miniaturized Raspberry Pi Compute Module carrier board optimized for Linux server use cases.

    166 parts8
  • 6 layers76 × 56 mmCM4 MANET, the printed circuit board in 3D

    CM4 MANET

    ties1887/Mesh-radio-Halow-LoRa

    Modular mesh radio system using Raspberry Pi + HaLow (802.11ah) + LoRa.

    122 parts40
  • 4 layers25.3 × 35.1 mmAgb hifi audio pcb, the printed circuit board in 3D

    Agb hifi audio pcb

    cajunpanda/gameboy-hifi-audio

    A HiFi audio mod for various Game Boy models

    66 parts25MIT
  • 4 layers68 × 46 mmUtter, the printed circuit board in 3D

    Utter

    IFAKA/utter

    Utter: covert silent-speech text input from surface EMG (open-source ALS voice)

    107 parts