OpenPLC
About the OpenPLC PCB
OpenPLC is an open source Raspberry Pi PCB design by radioelf, published on GitHub. It is a 2-layer board measuring 129.5 × 72.6 mm, with 163 components from 55 distinct parts.
Its main chip is the Raspberry_Pi_2_3, from the Raspberry Pi family. Other key parts include the ENC28J60x-SS, DS3231MZ, 24LC32, TLP281-4 and LM2596S-5. By type, the board carries 71 resistors, 32 diodes, 18 capacitors, 12 ICs, 8 connectors and 8 relays.
From the project
Hardware for OpenPLC with raspberry PI Z and Mod. software OpenPlc
Diseño de PCBs con Kicad para OpenPlc usando como CPU una Raspberry Pi Z (int-out) y Arduino Nano para las PBCs de entradas/salidas analógicas
UNLESS OTHERWISE MUTUALLY AGREED TO BY THE PARTIES IN WRITING, LICENSOR OFFERS THE WORK AS-IS AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND CONCERNING THE WORK, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTIBILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OF ABSENCE OF ERRORS, WHETHER OR NOT DISCOVERABLE.…
Main components on the OpenPLC
OpenPLC bill of materials (BOM)
163 components, 55 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ENC28J60x-SS | SSOP-28_5.3x10.2mm_P0.65mm | U1 |
| 1 | DS3231MZ | SOIC-18W_7.5x11.6mm_P1.27mm | U2 |
| 1 | 24LC32 | MSOP-8_3x3mm_P0.65mm | U3 |
| 4 | TLP281-4 | SOIC-16W_5.3x10.2mm_P1.27mm | U4, U5, U8, U9 |
| 1 | LM2596S-5 | TO-263-5_TabPin3 | U6 |
| 2 | MAX3370 | SOT-353_SC-70-5 | U7, U11 |
| 1 | ULN2803A | SOP-18_7.0x12.5mm_P1.27mm | U10 |
| 1 | MAX13487 | PowerIntegrations_SO-8 | U12 |
| 2 | DMG2305 | SOT-23 | Q1, Q3 |
| 1 | DMMT5401 | SOT-23-6 | Q2 |
| 1 | BC847 | SOT-23 | Q4 |
| 1 | 25Mhz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | RJ45-TRANSFO_HR911105A | RJ45_Hanrun_HR911105A | J1 |
| 1 | Conn_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J2 |
| 1 | Raspberry_Pi_2_3 | Raspberry_Pi_Zero_invert | J3 |
| 1 | Conn_01x08 | TerminalBlock_RND_205-00051_1x08_P5.00mm_Horizontal | J4 |
| 1 | Conn_01x16 | WAGO_250-204-16 | J5 |
| 1 | 1-Wire | FanPinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | Conn_02x07_Odd_Even | IDC-Header_2x07_P2.54mm_Horizontal_Lock | J7 |
| 1 | On-Off RUN | PinHeader_1x02_P2.00mm_Vertical | J8 |
Show 35 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Battery_Cell | BatteryHolder_Keystone_103_1x20mm | BT1 |
| 1 | PPTC- 250mA | Fuse_1206_3216Metric | F1 |
| 8 | APA331 | Relay_apan3124 | K1, K2, K3, K4, K5, K6, K7, K8 |
| 1 | RX | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP1 |
| 1 | TX | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 1 | GND | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP3 |
| 1 | SMBJ36A | DO-214AA | D1 |
| 1 | STPS1L30A | D_SMA | D2 |
| 1 | SS34 | D_SMA | D3 |
| 8 | RGF1B | D_SOT-23_ANK | D4, D5, D6, D7, D8, D9, D10, D11 |
| 16 | LED | LED_0805_2012Metric | D12, D13, D14, D15, D16, D17, D18, D19 +8 |
| 2 | 6V8C | D_2010_5025Metric | D20, D23 |
| 1 | stop/run | LED_0805_2012Metric | D22 |
| 1 | PESD0402-140 | D_0402_1005Metric | D28 |
| 1 | Power | LED_0805_2012Metric | D32 |
| 1 | 47uH | L_12x12mm_H6mm | L1 |
| 1 | 10uH | L_0805_2012Metric | L2 |
| 2 | 10uH | L_Axial_L5.3mm_D2.2mm_P10.16mm_Horizontal_Vishay_IM-1 | L3, L4 |
| 1 | 100uF 50V | CP_Radial_D8.0mm_P3.50mm | C1 |
| 10 | 100nF | C_0805_2012Metric | C2, C4, C8, C9, C13, C14, C15, C16 +2 |
| 1 | 1000uF | CP_Radial_D8.0mm_P3.50mm | C3 |
| 2 | 18pF | C_0805_2012Metric | C5, C6 |
| 2 | 10uF | CP_EIA-3216-10_Kemet-I | C7, C10 |
| 2 | 10nF | C_0805_2012Metric | C11, C12 |
| 16 | 4k7 | R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8 +8 |
| 19 | 10k | R_0805_2012Metric | R9, R10, R11, R12, R13, R14, R15, R16 +11 |
| 8 | 5k1 | R_0805_2012Metric | R17, R18, R19, R20, R21, R22, R23, R24 |
| 2 | 0R | R_0805_2012Metric | R25, R53 |
| 13 | 1k | R_0805_2012Metric | R30, R33, R35, R38, R39, R40, R41, R42 +5 |
| 1 | 2k7 | R_0805_2012Metric | R32 |
| 4 | 50R | R_0805_2012Metric | R36, R37, R46, R47 |
| 2 | 4k2 | R_0805_2012Metric | R50, R51 |
| 1 | 120R | R_0805_2012Metric | R52 |
| 2 | 100R | R_2512_6332Metric | R66, R67 |
| 3 | 47K | R_0805_2012Metric | R68, R69, R71 |
OpenPLC design files
The KiCad project lives in the radioelf/OpenPlc repository on GitHub; these links point at the commit this page was built from.
OpenPLC: common questions
What microcontroller does the OpenPLC use?
The OpenPLC is built around the Raspberry_Pi_2_3, from the Raspberry Pi family.
How big is the OpenPLC PCB?
The OpenPLC measures 129.5 × 72.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OpenPLC?
163 components, from 55 distinct parts. The full bill of materials is listed on this page.
Where can I download the OpenPLC design files?
From the radioelf/OpenPlc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the OpenPLC design in my own project?
The repository has no license, so all rights stay with radioelf. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the OpenPLC without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
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