Capacitor alarm clock
About the Capacitor alarm clock PCB
Capacitor alarm clock is an open source ESP32 PCB design by ArcaEge, published on GitHub under the MIT license. It is a 2-layer board measuring 62.3 × 64.3 mm, with 81 components from 30 distinct parts.
Its main chip is the ESP32-C3-MINI-1-N4, from the ESP32 family. Other key parts include the SSP7903P12FR and X096-2864KSWPG01-H30. By type, the board carries 33 resistors, 16 capacitors, 12 diodes, 4 ICs, 4 transistors and 4 switches.
From the project
capacitor blow up human wake up
If you're looking for the production files, they're under ../production/
I used hierarchical schematics whilst designing this, this is split into multiple files
Main components on the Capacitor alarm clock
Capacitor alarm clock bill of materials (BOM)
81 components, 30 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-C3-MINI-1-N4 ~ ESPRESSIF(乐鑫) | WIFIM-SMD_ESP32-C3-MINI-1 | U1 |
| 1 | SSP7903P12FR ~ Siproin(上海矽朋) | SOT-223_L6.3-W3.5-P2.30-LS7.0-BR | U2 |
| 1 | X096-2864KSWPG01-H30 ~ Wisevision(新智景) | OLED-SMD_X096-2864KSWPG01-H30 | U4 |
| 1 | ~ Siproin(上海矽朋) | SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR-1 | U5 |
| 1 | CH221K ~ WCH(南京沁恒) | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL-2 | Q1 |
| 3 | ~ Nexperia(安世) | SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | Q2, Q3, Q4 |
| 1 | DC-005-A200 ~ XUNPU(讯普) | DC-IN-TH_DC-005-A200 | DC1 |
| 3 | ZX-PM2.54-1-2PY ~ Megastar(兆星) | HDR-TH_2P-P2.54-V-F | H6, H7, H8 |
| 3 | ~ OMRON(欧姆龙) | RELAY-TH_G5NB-1A-E-DCXX | RLY1, RLY2, RLY3 |
| 2 | TS-1089S-02526 ~ XUNPU(讯普) | SW-SMD_4P-L4.2-W3.3-P2.15-LS5.1 | SW1, SW3 |
| 2 | TS665ZJ ~ SHOU HAN(首韩) | SW-TH_TS665ZJ | SW2, SW4 |
| 1 | ~ SHOU HAN(首韩) | USB-C-SMD_TYPE-C-6PIN-2MD-073 | USB1 |
| 1 | BZT52C3V3 3V3 MDD(辰达半导体) | SOD-123_L2.7-W1.6-LS3.7-RD | D1 |
| 2 | B340A-13-F ~ DIODES(美台) | SMA_L4.4-W2.6-LS5.0-RD | D2, D3 |
| 2 | PESD5V0U1BA-N ~ Prisemi(芯导) | SOD-323_L1.8-W1.3-LS2.5-BI | D4, D5 |
| 4 | 1N5819HW-7-F ~ DIODES(美台) | SOD-123_L2.7-W1.6-LS3.7-RD | D6, D7, D8, D9 |
| 3 | YLED0603R LED | LED_0603_1608Metric | D10, D11, D12 |
| 6 | CL10A106MA8NRNC 10u | C_0603_1608Metric | C1, C2, C3, C4, C5, C13 |
| 1 | CC0603KRX7R9BB104 0.1u | C_0603_1608Metric | C6 |
| 7 | CL10B105KA8NNNC 1u | C_0603_1608Metric | C7, C8, C9, C10, C14, C15, C16 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CL10A475KO8NNNC 4.7u | C_0603_1608Metric | C11 |
| 1 | CL10A225KO8NNNC 2.2u | C_0603_1608Metric | C12 |
| 5 | FRC0603F5101TS 5K1 | R_0603_1608Metric | R1, R2, R19, R20, R22 |
| 10 | RC0603FR-0710KL 10K | R_0603_1608Metric | R3, R4, R5, R6, R11, R14, R17, R27 +2 |
| 1 | RC0603FR-0762KL 62K | R_0603_1608Metric | R7 |
| 8 | RC0603FR-071KL 1K | R_0603_1608Metric | R8, R10, R13, R16, R30, R31, R32, R33 |
| 1 | FRC0603F1003TS 100K | R_0603_1608Metric | R9 |
| 3 | 10R 5R1 | R_Axial_DIN0516_L15.5mm_D5.0mm_P20.32mm_Horizontal | R12, R15, R18 |
| 1 | 0603WAF6203T5E 620K | R_0603_1608Metric | R21 |
| 4 | RC0603JR-070RL 0R | R_0603_1608Metric | R23, R24, R25, R26 |
Capacitor alarm clock design files
The KiCad project lives in the ArcaEge/capacitor-alarm-clock repository on GitHub; these links point at the commit this page was built from.
Capacitor alarm clock: common questions
What microcontroller does the Capacitor alarm clock use?
The Capacitor alarm clock is built around the ESP32-C3-MINI-1-N4, from the ESP32 family.
How big is the Capacitor alarm clock PCB?
The Capacitor alarm clock measures 62.3 × 64.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Capacitor alarm clock?
81 components, from 30 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 Capacitor alarm clock design files?
From the ArcaEge/capacitor-alarm-clock 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 Capacitor alarm clock design in my own project?
Yes, under the terms of its MIT license, which ArcaEge chose for the repository.
Can I test firmware for the Capacitor alarm clock 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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