Bitclock
Bitclock is an open source ESP32 PCB design by goat-hill: a 4-layer, 78 × 48 mm board with 58 components (29 distinct parts). It is built around the C2867572, C2913198, C3659325, C3659421 and more. Filed under iot & wireless and displays & leds and sensors.
An e-ink desk companion
Each directory includes gerber + BOM files used for ordering from a PCBA service like JLCPCB.
Used for ordering from JLCPCB or MacroFab.
https://github.com/goat-hill/kicad-pcba-scripts
It does include a few extraneous components that were an attempt to support the unreleased BMV080 particulate sensor. I may have misinterpreted the preliminary datasheet so feel free to omit that connector and supporting capacitors. It also designs for an option side-USB port that I may omit in the future due to added routing complexity and it is unused.
Built around
Parts list
58 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C2867572 TLV76733DRVT | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U1 |
| 1 | C2913198 ESP32-S3-WROOM-1-N8 | ESP32-S3-WROOM-1 | U2 |
| 1 | C3659325 SGP41-D-R4 | XDCR_SGP41-D-R4 | U3 |
| 1 | C3659421 SCD40-D-R2 | Sensirion_SCD4x-1EP_10.1x10.1mm_P1.25mm_EP4.8x4.8mm | U4 |
| 1 | C2909890 SHT40-AD1B-R2 | Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad | U5 |
| 1 | C20917 AO3400A | SOT-23 | Q1 |
| 1 | C324726 FH34SRJ-24S-0.5SH | HRS_FH34SRJ-24S-0.5SH_99_ | J1 |
| 1 | C711417 ECT818001568 | FPC-SMD_ECT818001568 | J2 |
| 1 | TYPE-C16PIN | USB-C-SMD_TYPE-C16PIN | J3 |
| 1 | C3151747 TYPE-C 16PLC-H10.0 | TYPE-C-TH_16PLC-H10.0 | J4 |
| 2 | C318884 SW_Push | SW_Push_1P1T_XKB_TS-1187A | SW1, SW2 |
| 1 | KT-0603R | LED_0603_1608Metric | D1 |
| 1 | 19-213/Y2C-CQ2R2L/3T(CY) | LED_0603_1608Metric | D2 |
| 4 | C82544 1N5819HW-7-F | D_SOD-123 | D3, D4, D5, D9 |
| 3 | C383211 LESD5D5.0CT1G | D_SOD-523 | D6, D7, D8 |
| 1 | C279861 600mA 10uH ±20% SPH3010H100MT | L_Sunlord_SWPA3010S | L1 |
| 16 | C52923 1µF | C_0402_1005Metric | C1, C2, C9, C11, C12, C13, C14, C15 +8 |
| 1 | C23630 2.2µF | C_0603_1608Metric | C3 |
| 3 | C1525 100nF | C_0402_1005Metric | C4, C8, C19 |
| 2 | C96446 10µF | C_0603_1608Metric | C5, C18 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C32949 10pF | C_0402_1005Metric | C7 |
| 1 | C19666 4.7µF | C_0603_1608Metric | C10 |
| 2 | C25744 10kΩ | R_0402_1005Metric | R1, R12 |
| 1 | 1k | R_0402_1005Metric | R2 |
| 1 | 470R | R_0402_1005Metric | R3 |
| 4 | C25905 5.1kΩ | R_0402_1005Metric | R4, R5, R8, R9 |
| 1 | C158958 470mΩ | R_0402_1005Metric | R6 |
| 1 | C23164 4.7Ω | R_0603_1608Metric | R7 |
| 2 | C17168 0Ω | R_0402_1005Metric | R10, R11 |
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