tinta
c0de111
Battery-powered e-paper sign that runs for over a year on alkaline cells: room signage, sensor graphs, home automation, or anything over Wi-Fi. Wakes by real-time clock, NFC tap, or button. Raspberry Pi Pico W firmware, custom PCB, and 3D-printed case included.
Components (22)
| Reference | Value | Description |
|---|---|---|
| Q1,Q3 | TSM260P02CX | |
| Q2,Q4 | MMBT3904 | |
| U1 | DS3231M | |
| U2 | BMP581 | |
| U3 | RV-3028-C7 | Realtime Clock/Calendar I2C Interface, Extreme Low Power, 1.1 V to 5.5 V, MicroCrystal C7 |
| battery_RTC1 | Battery 3,7V | |
| C1-C8 | 100nF | decoupling |
| D1,D3-D8 | BAT54J | 30V 200mA Schottky diode, SOD-323F |
| D2 | 1N4148WS | 75V 0.15A Fast switching Diode, SOD-323 |
| J1 | connector epaper | |
| J2-J5,J7 | Conn_01x02_Socket | |
| pico1 | SC0918 | |
| R1,R7,R8,R14 | 200k | |
| R2 | 1M | |
| R3,R4 | 4k7 | |
| R5,R10-R13,R21 | 1k | |
| R6 | 220R | |
| R9,R22 | 50k | |
| R15 | 2M2 | |
| R16 | 22R | |
| R17-R20 | 10k | |
| SW1 | SW_DIP_x04 | 4x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |