gps-seven-seg-clock
JWehle
A large seven segment clock that uses highly accurate GPS time.
Components (30)
| Reference | Value | Description |
|---|---|---|
| Q1 | SiS176DN | 35A Id, 20V Vds, N-Channel MOSFET, PowerPAK 1212-8 Single |
| Q2 | 2N7002 | 0.115A Id, 60V Vds, N-Channel MOSFET, SOT-23 |
| Q3 | MMBT2222A | 600mA Ic, 40V Vce, NPN Transistor, SOT-23 |
| U1 | LM3488MM | 2.97~40V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller, VSSOP-8 |
| U2 | ESP32 Dev Board | |
| U3-U5,U9-U11 | ULN2003A | High Voltage, High Current Darlington Transistor Arrays, SOIC16/SOIC16W/DIP16/TSSOP16 |
| U6-U8 | PCA9555PW | IO expander 16 GPIO, I2C 400kHz, Interrupt, 2.3 - 5.5V, TSSOP-24 |
| C1-C11,C23,C24 | 22uF | Unpolarized capacitor, small symbol |
| C12,C17-C21,C25-C32 | 0.1uF | Unpolarized capacitor, small symbol |
| C13 | 1nF | Unpolarized capacitor, small symbol |
| C14 | 100pF | Unpolarized capacitor, small symbol |
| C15 | 10nF | Unpolarized capacitor, small symbol |
| C16,C22 | 100uF | Unpolarized capacitor, small symbol |
| D1 | CDBB345LR-HF | DIODE SCHOTTKY 45V 3A DO214AA |
| J1,J2 | Conn_01x06 | Generic connector, single row, 01x06, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3,J4 | SM04B-GHS-TB | Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J5-J10 | SM09B-GHS-TB | Generic connector, single row, 01x09, script generated (kicad-library-utils/schlib/autogen/connector/) |
| L1 | 10uH | HCM1A1305V3-100-R |
| R1 | 0.1 | Resistor, US symbol |
| R2,R3 | 69.8K | Resistor, US symbol |
| R4,R10,R16 | 1K | Resistor, US symbol |
| R5 | 40K | Resistor, US symbol |
| R6 | 10K | Resistor, US symbol |
| R7,R11,R12,R15,R18 | 100K | Resistor, US symbol |
| R8 | 0.05 | Shunt resistor with Kelvin connections, US symbol |
| R9,R17,R19 | 2.2K | Resistor, US symbol |
| R13,R14 | 470 | Resistor, US symbol |
| R20 | 0 | Resistor, US symbol |
| TP1-TP3,TP5-TP17 | 5016 | test point |
| TP4 | 20AWG Wire | test point |