Esp32 button
About the Esp32 button PCB
Esp32 button is an open source PCB design by ep-infosec, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 44 × 44 mm, with 56 components from 33 distinct parts.
Other key parts include the HT7333A, CH340C, 5050_Serial_RGB and TP5410. By type, the board carries 13 capacitors, 13 resistors, 6 transistors, 6 diodes, 5 test points and 4 ICs.
From the project
This is a single-button (with some IOs broken out) that can use deep sleep or fully turn off in between uses.
This is a single-button (with some IOs broken out) that can use deep sleep or fully turn off in between uses.
Results in a pretty small overall package that's not quite pocket-sized.
The build by hand will probably require a microscope (for Q301, part of the auto-reset circuit) and a very good soldering iron (exposed pads, although there vias so you can head from the other side).
Main components on the Esp32 button
Esp32 button bill of materials (BOM)
56 components, 33 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HT7333A | SOT-89-3 | U201 |
| 1 | CH340C | SOIC-16_3.9x9.9mm_Pitch1.27mm | U301 |
| 1 | 5050_Serial_RGB | LED_WS2812B-PLCC4 | U402 |
| 1 | TP5410 | SOIC-8-1EP_3.9x4.9mm_Pitch1.27mm | U501 |
| 1 | WROOM32 | WROOM32 | M401 |
| 3 | AO3401 | SOT-23 | Q201, Q402, Q602 |
| 1 | UMH3N | SOT-363_SC-70-6_Handsoldering | Q301 |
| 2 | AO3400 | SOT-23 | Q601, Q603 |
| 1 | USB_OTG | USB_Micro-B_Amphenol-10118194-0001LF_CircularHoles | J401 |
| 1 | CONN_01X05 | Pin_Header_Straight_1x05_Pitch2.54mm | J402 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03_Pitch2.54mm | J403 |
| 1 | Battery_Cell | JST_PH_2_Combo | BT101 |
| 1 | 500mA Hold | Fuse_SMD1206_HandSoldering | F301 |
| 1 | SW_Push | SW_SPST_EVQP0 | SW101 |
| 1 | SW_Push | SW_SPST_PTS645 | SW102 |
| 5 | TEST_1P | Test_Point_SMD | TP1, TP201, TP301, TP501, TP502 |
| 3 | B5819W | D_SOD-123 | D201, D401, D601 |
| 1 | CHARGE (Red) | LED_0603 | D501 |
| 1 | Power (Grn) | LED_0603 | D502 |
| 1 | 2A | D_SMB | D503 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4.7uH | Inductor_Taiyo-Yuden_NR-40xx_HandSoldering | L501 |
| 4 | 10u | C_0805 | C201, C202, C303, C501 |
| 1 | 4.7n | C_0603 | C301 |
| 3 | 0.1u | C_0603 | C302, C504, C505 |
| 1 | 1u | C_0805 | C403 |
| 1 | 47u | C_1206 | C404 |
| 2 | 22u | C_0805 | C502, C503 |
| 1 | 220p | C_0603 | C601 |
| 7 | 10k | R_0603_HandSoldering | R201, R401, R402, R403, R404, R603, R604 |
| 1 | 1M | R_0603_HandSoldering | R301 |
| 2 | 1k | R_0402 | R501, R502 |
| 1 | 2k | R_0603_HandSoldering | R503 |
| 2 | 100k | R_0603_HandSoldering | R601, R602 |
Esp32 button design files
The KiCad project lives in the ep-infosec/50_google_makerspace-partsbin repository on GitHub; these links point at the commit this page was built from.
Esp32 button: common questions
How big is the Esp32 button PCB?
The Esp32 button measures 44 × 44 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Esp32 button?
56 components, from 33 distinct parts. The full bill of materials is listed on this page.
Where can I download the Esp32 button design files?
From the ep-infosec/50_google_makerspace-partsbin repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Esp32 button design in my own project?
Yes, under the terms of its CC-BY-4.0 license, which ep-infosec chose for the repository.
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