Adafruit Circuit Playground
About the Adafruit Circuit Playground PCB
Adafruit Circuit Playground is an open source AVR/Arduino PCB design by humancomputerintegration, published on GitHub under the GPL-3.0 license. It is a 16-layer board measuring 61 × 60 mm, with 78 components from 40 distinct parts.
Its main chip is the ATMEGA32U4-MU, from the AVR/Arduino family. Other key parts include the LMV358MM, LIS3DH, SPW2430, ALS-PT19-315C and AP2112K-3.3. By type, the board carries 16 resistors, 11 LEDs, 10 ICs, 9 capacitors, 4 test points and 4 diodes.
From the project
ProtoPCB Code and Evaluation Files
This repository contains our tests, evaluation files, and software tool (ProtoPCB) presented in the paper "ProtoPCB: Reclaiming Printed Circuit Board E-waste as Prototyping Material", which will appear at CHI2025. This tool was built by Jasmine Lu (@xjasminelu), Sai Rishitha Boddu (@rishiboddu) with project assistance from Pedro Lopes at the University of Chicago's Human Computer Integration Lab.
Main components on the Adafruit Circuit Playground
Adafruit Circuit Playground bill of materials (BOM)
78 components, 40 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATMEGA32U4-MU | TQFN44_7MM | IC1 |
| 1 | LMV358MM | MSOP08 | IC2 |
| 1 | LIS3DH | LGA16_3X3MM | IC4 |
| 1 | SPW2430 | SPW2430HR5H-B | U1 |
| 1 | ALS-PT19-315C | ALS-PT19-315C | U2 |
| 1 | AP2112K-3.3 | SOT23-5 | U3 |
| 1 | — | SYMBOL_MINUS | U$1 |
| 1 | — | FLORAMED | U$4 |
| 1 | — | PCBFEAT-REV-040 | U$7 |
| 1 | — | SYMBOL_PLUS | U$35 |
| 1 | MMBT2222 | SOT23-WIDE | Q1 |
| 1 | 8MHz | RESONATOR-SMD | Y1 |
| 1 | MicroB USB | 4UCONN_20329_V2 | CN1 |
| 1 | 3-6VDC | JSTPH2 | BATT0 |
| 13 | SEWTAP-ALLIGATOR | SEWALLI | GND3TAP0, GNDTAP0, GNDTAP2, IO9, IO10, IO12, RX0, SCL0 +5 |
| 1 | KMR2 | BTN_KMR2_4.6X2.8 | RESET0 |
| 1 | 8MM | BUZZER_SMT_5MM | SP1 |
| 2 | EVQQ | EVQ-Q2_SMALLER | SW1, SW2 |
| 1 | EG1390 | EG1390 | SWITCH0 |
| 1 | 10K | _0402 | THM1 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MISO | TESTPOINT_ROUND_1.5MM | TP1 |
| 1 | SCK | TESTPOINT_ROUND_1.5MM | TP2 |
| 1 | RST | TESTPOINT_ROUND_1.5MM | TP3 |
| 1 | MOSI | TESTPOINT_ROUND_1.5MM | TP4 |
| 10 | WS2812B3535 | LED3535 | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +2 |
| 1 | GREEN | CHIPLED_0805_NOOUTLINE | PWR0 |
| 2 | SCHOTTKY (1A) | SOD-123 | D1, D2 |
| 1 | 1N4148 | SOD-323 | D4 |
| 1 | SEWTAP-ALLIGATOR | SEWALLI | D6 |
| 1 | RED | CHIPLED_0805_NOOUTLINE | L0 |
| 1 | 0.1uF | 0603-NO | C1 |
| 6 | 1uF | 0603-NO | C2, C3, C5, C6, C7, C9 |
| 2 | 10uF | 0805-NO | C4, C8 |
| 2 | 22 | 0603-NO | R1, R2 |
| 3 | 1K | 0603-NO | R3, R5, R8 |
| 6 | 10K | 0603-NO | R4, R6, R7, R10, R13, R14 |
| 1 | 100K | 0603-NO | R9 |
| 1 | 20K | 0603-NO | R11 |
| 2 | 1M | RESPACK_4X0603_NO | R15, R22 |
| 1 | 100 | 0603-NO | R21 |
Adafruit Circuit Playground design files
The KiCad project lives in the humancomputerintegration/ProtoPCB repository on GitHub; these links point at the commit this page was built from.
Adafruit Circuit Playground: common questions
What microcontroller does the Adafruit Circuit Playground use?
The Adafruit Circuit Playground is built around the ATMEGA32U4-MU, from the AVR/Arduino family.
How big is the Adafruit Circuit Playground PCB?
The Adafruit Circuit Playground measures 61 × 60 mm, has 16 copper layers and is 1.6 mm thick.
How many components are on the Adafruit Circuit Playground?
78 components, from 40 distinct parts. The full bill of materials is listed on this page.
Where can I download the Adafruit Circuit Playground design files?
From the humancomputerintegration/ProtoPCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Adafruit Circuit Playground design in my own project?
Yes, under the terms of its GPL-3.0 license, which humancomputerintegration chose for the repository.
Can I test firmware for the Adafruit Circuit Playground without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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