ReactionButton
About the ReactionButton PCB
ReactionButton is an open source ESP32 PCB design by RunningJoke, published on GitHub. It is a 2-layer board measuring 86 × 86 mm, with 67 components from 23 distinct parts.
Its main chip is the C2934560, from the ESP32 family. Other key parts include the C28642215 and C440390. By type, the board carries 21 diodes, 16 resistors, 15 capacitors, 7 switches, 3 ICs and 3 transistors.
Main components on the ReactionButton
ReactionButton bill of materials (BOM)
67 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C2934560 ESP32-C3-WROOM-02 | ESP32-C3-WROOM-02 | U1 |
| 1 | C28642215 TLV75533PDYDR | SOT-23-5 | U2 |
| 1 | C440390 TP4057 | TSOT-23-6 | U3 |
| 1 | C75469 FDN340P | SOT-23 | Q1 |
| 1 | C52895 BSS138 | SOT-23 | Q2 |
| 1 | NDS331N | SOT-23 | Q3 |
| 1 | USB4105 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | C173752 S2B-PH-K-S | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 6 | C83206 PTS645 | SW_SPST_PTS645 | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | SLW-1277545-3A-RA-N-D | SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW7 |
| 1 | C168859 SS14 | D_SMA | D1 |
| 1 | C965793 150040VS73220 | LED_0402_1005Metric | D2 |
| 1 | C130724 150040BS73220 | LED_0402_1005Metric | D3 |
| 18 | C114587 SK6812 | LED_SK6812_PLCC4_5.0x5.0mm_P3.2mm | D4, D5, D6, D7, D8, D9, D10, D11 +10 |
| 12 | C14445 C1uF | C_0402_1005Metric | C1, C3, C7, C8, C9, C10, C11, C13 +4 |
| 2 | C77000 C10uF | C_0402_1005Metric | C2, C5 |
| 1 | C60078 C2.2uF | C_0402_1005Metric | C4 |
| 7 | C25531 R10K | R_0402_1005Metric | R1, R4, R5, R10, R12, R13, R16 |
| 2 | C25905 R5.1k | R_0402_1005Metric | R2, R3 |
| 4 | C25530 R100K | R_0402_1005Metric | R6, R7, R8, R9 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C12246 R330 | R_0402_1005Metric | R11 |
| 1 | C25117 R470 | R_0402_1005Metric | R14 |
| 1 | C4109 R2K | R_0402_1005Metric | R15 |
ReactionButton design files
The KiCad project lives in the RunningJoke/reactionButton repository on GitHub; these links point at the commit this page was built from.
ReactionButton: common questions
What microcontroller does the ReactionButton use?
The ReactionButton is built around the C2934560, from the ESP32 family.
How big is the ReactionButton PCB?
The ReactionButton measures 86 × 86 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ReactionButton?
67 components, from 23 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 ReactionButton design files?
From the RunningJoke/reactionButton 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 ReactionButton design in my own project?
The repository has no license, so all rights stay with RunningJoke. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ReactionButton 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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