2 layers13 × 13 mm
2 layers20 × 20 mm
Pico32
arnytrty/pico3212small open source board based on ESP32-PICO-D4
- Size
- 20 × 20 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 42
- Nets
- 45
- Pads
- 116
- Tracks, vias
- 125, 23
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 14 Jun 2021
- Updated
- 21 Feb 2022
Overview
Pico32 is an open-source printed circuit board by arnytrty, from the arnytrty/pico32 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 20 × 20 mm with 42 parts on 45 nets, routed with 125 tracks and 23 vias.
It is built around the ESP32-PICO-D4. Its parts include 4 capacitors, 2 ICs and 1 resistor. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdArnytrty Pico32
Pico32 is small (13mm*13mm) open source board based on ESP32-PICO-D4. It was designed for full use of the SoC package from Espressif & make it more accessible so you can simply handsolder without any special tools. It has a 4MB embedded flash (esp32-pico-d4 datasheet).
This board does not have USB to UART converter, you will need an external one to program it (they are pretty cheap). For a programming guide, check out FLASHING.md.
Files & Revisions:
Main folders:
| Name | Content |
|---|---|
| hardware | board CAD files |
| images | images of the board |
| models | Exported 3D models |
| order | GERBER, BOM & CPL files |
Subfolders:
| Name | Revision | Tested | Comment |
|---|---|---|---|
| pico32_v1_jlcpcb_assembly | v1 | YES | got removeable frame to match jlcpcb assembly requirements; designed in EasyEDA; fully working, but has pins from bootm & got only 100mA regulator |
| pico32_v2 | v2 | NO | pins from side; better regulator; designed in KiCad |
| pico32_v2_jlcpcb_assembly | v2 | NO | got removeable frame to match jlcpcb assembly requirements, other parameters are the same as pico32_v2 |
Currently I dont sell these myself, but you can check out how to buy them for yourself on ORDER.md guide.
Revisions
v2
This version is more universal than the first one, it also removes the flaws of v1. It has the same footprint as before (13mm*13mm), but instead of having pads on the bottom, it has them cascellated through holes on sides so you can easily solder it on a homemade PCB.
Known issues:
- NONE
v1
This was used as the test of how many components ESP32-PICO-D4 needs, it works pretty well, but if you use CPU speed over 80MHz it will throw Brownout detector was triggered. With its 13mm*13mm footprint, you can simply fit it in ending of aluminium profile & control rgb leds with it.
Known issues:
- Wrong LDO - only 100mA
- Too small capacitors ?
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C3 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | Antenna | Pico32:AN9520-245 | AE1 |
| 1 | ESP32-PICO-D4 | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.3x5.3mm | U2 |
| 1 | TPS79333-EP | Package_TO_SOT_SMD:SOT-23-5 | U1 |
The 8 most common of 42 parts.
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Questions
How big is the Pico32 PCB?
It measures 20 × 20 mm and has 2 copper layers, 0.8 mm thick.
What parts does the Pico32 use?
42 parts, built around the ESP32-PICO-D4. 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 Pico32 KiCad files?
From the arnytrty/pico32 repository on GitHub, at the commit this page was made from: the board is hardware/pico32_v2_jlcpcb_assembly/Pico32.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pico32 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).