desk_timer
nshcat
Components (22)
| Reference | Value | Description |
|---|---|---|
| Q1 | 2SC4213 | 0.3A Ic, 20V Vce, NPN Transistor, For Muting and Switching, SOT-323 |
| U1 | STM32G0B1CBT6 | STMicroelectronics Arm Cortex-M0+ MCU, 128KB flash, 144KB RAM, 64 MHz, 1.7-3.6V, 44 GPIO, LQFP48 |
| U2 | AMS1117-3.3 | 1A Low Dropout regulator, positive, 3.3V fixed output, SOT-223 |
| BZ1 | PKMCS0909E4000-R1 | Buzzer, polarized |
| C1,C2 | 22uF | Unpolarized capacitor |
| C3,C4 | 10pF | Unpolarized capacitor |
| C5,C6 | 12pF | Unpolarized capacitor |
| C7,C8,C10 | 100nF | Unpolarized capacitor |
| C9 | 10nF | Unpolarized capacitor |
| D1 | YELLOW GREEN | Light emitting diode |
| D2 | RED | Light emitting diode |
| FB1 | BLM21PG221SN1D | Ferrite bead, small symbol |
| J1 | GT-USB-7010ASV | USB 2.0-only 16P Type-C Receptacle connector |
| J2 | Pin Headers,2x20,SMD,P2.54mm,vertical | expansion header for Raspberry Pi 2 & 3 |
| J3 | SWD | Generic connector, single row, 01x07, script generated |
| R1,R2,R4,R5 | 5K1 | Resistor |
| R3 | 10k | Resistor |
| R8 | 300R | Resistor |
| R9 | 1K | Resistor |
| SW1 | SW_Push | Push button switch, generic, two pins |
| Y1 | 32.768 KHz, 10ppm, 12.5pf | Two pin crystal |
| Y2 | 8 MHz, 10ppm, 10pf | Four pin crystal, GND on pins 2 and 4 |