Jig2
About the Jig2 PCB
Jig2 is an open source ESP32 PCB design by OpenEPaperLink, published on GitHub. It is a 2-layer board measuring 40 × 85 mm, with 22 components from 15 distinct parts.
Its main chip is the ESP32_Devkit_JL, from the ESP32 family. Other key parts include the MCP73831. By type, the board carries 9 resistors, 3 switches, 3 diodes, 2 transistors, 2 connectors and 2 jumpers.
From the project
Hardware files for the OpenEpaperLink project
This is an alternative PCB for flashing 2.9" ESLs
Main components on the Jig2
Jig2 bill of materials (BOM)
22 components, 15 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP73831 ESL-connector | SOLUM_ZBS_DEBUG | U1 |
| 1 | NVR1P02 Q_PMOS_GDS | SOT-23_Handsoldering | Q1 |
| 1 | Q_NMOS_GSD | SOT-23_Handsoldering | Q2 |
| 1 | ESP32_Devkit_JL | PinSocket_1x19_P2.54mm_Vertical | J1 |
| 1 | ESP32_Devkit_JR | PinSocket_1x19_P2.54mm_Vertical | J2 |
| 1 | SolderJumper_2_Bridged | SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP1 |
| 1 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 3 | SW_Push | SW_PUSH_6mm | SW1, SW2, SW3 |
| 1 | R | LED_D3.0mm | D1 |
| 1 | SBR80520 Y | LED_D3.0mm | D2 |
| 1 | G | LED_D3.0mm | D3 |
| 1 | 2K2 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 680R 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 6 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5, R6, R7, R8, R9 |
Jig2 design files
The KiCad project lives in the OpenEPaperLink/Hardware repository on GitHub; these links point at the commit this page was built from.
Jig2: common questions
What microcontroller does the Jig2 use?
The Jig2 is built around the ESP32_Devkit_JL, from the ESP32 family.
How big is the Jig2 PCB?
The Jig2 measures 40 × 85 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Jig2?
22 components, from 15 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 Jig2 design files?
From the OpenEPaperLink/Hardware 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 Jig2 design in my own project?
The repository has no license, so all rights stay with OpenEPaperLink. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Jig2 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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