Metrocard prototype
Metrocard prototype is an open source PCB design by Rishi-k-s: a 2-layer, 85 × 53 mm board with 56 components (7 distinct parts). It is built around the HT16K33A-24SOP.
A credit-card-sized PCB that shows real-time Kochi Metro data — a tiny, tappable transit map you can hold in your wallet.
A credit-card-sized PCB that shows real-time Kochi Metro data — a tiny, tappable transit map you can hold in your wallet.
The front silkscreen traces the full Kochi Metro Phase 1 line, from Aluva to Thripunithura, with every station labeled. A 1206 LED sits at each of the 49 stations (D00–D48), so the map can light up to reflect train position or other live status along the line.
Built around
Parts list
56 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HT16K33A-24SOP HOLTEK(合泰/盛群) | C5444735_SOP-24_L15_4-W7_5-P1_27-LS10_4-BL | U1 |
| 1 | CONN_01X04 Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 48 | LED | LED_1206_3216Metric | D00, D01, D02, D03, D04, D05, D06, D7 +40 |
| 1 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D49 |
| 1 | 0.1UF 0.1uF | C_1206_3216Metric | C1 |
| 2 | 4.7K | R_1206_3216Metric | R1, R2 |
| 2 | 39K | R_1206_3216Metric | R4, R5 |