4 layers82.8 × 33 mm
E ink watch
sandgum/Triangulate-ES_01-Watch
A 5mm thick smartwatch which uses an E-ink display and two OLEDs to display information while consuming very little power
162 parts22
4 layers75.8 × 49.4 mm
Pcb design
rahulnarayanan-s/pcb_design- Size
- 75.8 × 49.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 31
- Pads
- 67
- Tracks, vias
- 62, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Feb 2026
- Updated
- 12 Feb 2026
Overview
Pcb design is an open-source printed circuit board by rahulnarayanan-s, from the rahulnarayanan-s/pcb_design repository on GitHub. It is a 4-layer board of 75.8 × 49.4 mm with 14 parts on 31 nets, routed with 62 tracks and 2 vias.
It is built around the MAX30102. Its parts include 4 resistors, 3 capacitors, 3 switches, 2 ICs and 1 diode. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 3 | 100n | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C3 |
| 3 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | MAX30102 | spo_stuff:MAX30102_module | U1 |
| 1 | SSD1306 | spo_stuff:SSD1306 | U2 |
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Questions
How big is the Pcb design PCB?
It measures 75.8 × 49.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Pcb design use?
14 parts, built around the MAX30102. 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 Pcb design KiCad files?
From the rahulnarayanan-s/pcb_design repository on GitHub, at the commit this page was made from: the board is pcb_design.kicad_pcb and its schematic 8051_microcontroller/8051_microcontroller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb design design in my own project?
Its repository states no licence, so its author keeps all rights: ask rahulnarayanan-s before reusing the design.