2 layers47.6 × 27.3 mm
2 layers39.1 × 36.4 mm
PIC Watch
TimothyMarchant/PIC_Watch1A digital watch that tells the time and temperature. Uses a PIC microcontroller
- Size
- 39.1 × 36.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 17
- Pads
- 89
- Tracks, vias
- 408, 52
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Jul 2024
- Updated
- 7 Mar 2025
Overview
PIC Watch is an open-source printed circuit board by TimothyMarchant, from the TimothyMarchant/PIC_Watch repository on GitHub. It is a 2-layer board of 39.1 × 36.4 mm with 27 parts on 17 nets, routed with 408 tracks and 52 vias.
Its parts include 9 resistors, 5 capacitors, 4 ICs, 1 connector and 1 crystal. It belongs with the wearables boards and the PIC boards of this library.
README
README.mdPIC_Watch
A digital watch that tells the time and temperature. It uses the PIC16F15225 microcontroller. The screen is a 0.96 inch OLED (SSD1306).
The purpose of this project was to make an actual embedded application because I was in need of a watch.
Here are some pictures from start to finish.
Breadboard prototype
prototype PCB
Finalized PCB with components soldered on
Without the screen (this is actually a different PCB than the other two pictures!)
Back side
With the screen
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k ohms | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R4, R5, R6, R7, R9 |
| 4 | ~ | horizontal push button:TS11674153BK160RAD | PUSH1, PUSH2, PUSH3, PUSH4 |
| 2 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 4.7k ohms | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R8 |
| 2 | 6pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5 |
| 1 | 0.01uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3 |
| 1 | 470 ohms | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | Conn_01x05_Pin | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J1 |
| 1 | Crystal | Crystal:Crystal_AT310_D3.0mm_L10.0mm_Horizontal | Y1 |
| 1 | DM-OLED096-636 | SSD1306:MODULE_DM-OLED096-636 | U1 |
| 1 | MCP7940NT-I_SN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | IC3 |
| 1 | MCP9700AT-E_TT | Package_TO_SOT_SMD:SOT-23 | IC1 |
| 1 | PIC16F15225-I_SL | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC2 |
The 25 most common of 27 parts.
Questions
How big is the PIC Watch PCB?
It measures 39.1 × 36.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PIC Watch use?
27 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the PIC Watch KiCad files?
From the TimothyMarchant/PIC_Watch repository on GitHub, at the commit this page was made from: the board is PIC_Watch_hardware/PIC_Watch.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the PIC Watch design in my own project?
Its repository states no licence, so its author keeps all rights: ask TimothyMarchant before reusing the design.
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