totp
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Hardware 2FA TOTP authenticator
Components (26)
| Reference | Value | Description |
|---|---|---|
| IC1 | LPC1756FBD80,551 | MCU 32Bit ARM Cortex M3 256KB Flash LPC1756FBD80,551, 32 bit ARM Cortex M3 Microcontroller 100MHz 256 kB Flash, 32 kB RAM, USB CAN I2C 80-Pin LQFP |
| Q1 | BC856A,215 | BC856; BC857; BC858 - PNP general purpose transistors |
| Q2 | RN2425_TE85L,F_ | TRANSISTOR PNP BRT, Q1BSR=0.47kOhm, Q1BER=10kOhm, VCEO=-50V, IC=-0.8A, inSOT-346 (S-Mini) package |
| U1 | st7735_mini_lcd | |
| U2 | AMS1117-3.3 | |
| U3 | TC2050 | |
| BT1 | MS621FE-FL11E | |
| C1,C2 | 10uF | |
| C3-C6 | 18pF | |
| C7-C10 | 100nF | |
| D1 | IP4234CZ6,125 | |
| D2 | LED | |
| D3 | D_Schottky | |
| J1 | MC32603 | Conn USB Type A PL 4 POS Solder RA Thru-Hole 4 Terminal 1 Port |
| R1,R2 | 33 | |
| R3,R6 | 300 | |
| R4 | 750 | |
| R5 | 1000 | |
| R7 | 1K | |
| R8 | 1.5K | |
| R9,R11,R13,R14 | 1k | |
| R10 | 10K | |
| R12 | 1.8K | |
| S1-S3 | PTS810SJK250SMTRLFS | IP40 Black Button Tactile Switch, SPST-NO 50 mA 3mm Surface Mount |
| Y1 | ABS07-32.768KHZ-T | 32.768kHz SMD LOW PROFILE CRYSTAL |
| Y2 | ABM3B-12.000MHZ-B2-T |