kitchen-timer
timer-chefs
A digital kitchen timer made from scratch
Components (19)
| Reference | Value | Description |
|---|---|---|
| Q1 | JSM2302 | 20V 6A 26mΩ@4.5V,6A 1.25W 1.2V@250uA 1 N-Channel SOT-23 MOSFETs ROHS |
| Q2 | IRLML6402 | 20V 3.7A 1.3W 65mΩ@4.5V,3.7A 1.2V@250uA 1 Piece P-Channel SOT-23 MOSFETs ROHS |
| Q3 | MMBT3904 | 40V 200mW 100@10mA,1.0V 200mA NPN SOT-23 Bipolar (BJT) ROHS |
| U5 | ATMEGA328P-AU | 32KB 2KB FLASH 23 1.8V~5.5V AVR 20MHz TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHS |
| U6 | PEC11R-4215F-S0024 | Plugin Rotary Encoders ROHS |
| U7-U10 | MAX7219 | 8-Digit LED Display Driver |
| C5,C6,C9,C13-C16 | 100nF | 100nF Unpolarized capacitor |
| C7,C8 | 22pF | 22pF Unpolarized capacitor |
| C10-C12 | 10nF | 10nF Unpolarized capacitor |
| D1 | BAS40 | 40V Independent Type 200mA 1V@40mA SOT-23 Schottky Diodes ROHS |
| D2 | PMEG4010CEJ | 40V 570mV@1A 1A SOD-323F Schottky Diodes ROHS |
| D3-D5 | Red test LED | Light emitting diode, small symbol |
| LS1 | PS1240P02CT3 | Piezo Buzzers & Audio Indicators Round 12.2mmx3.5mm 4kHz Vin=3V |
| R1,R6,R8,R11-R15,R22 | 10k | 10k, 0805 |
| R7,R9,R10,R16,R17 | 1k | Resistor, small symbol |
| R18-R21 | 62K | 62k, 0805 |
| R23 | 3.3M | 3.3M, 0805 |
| R24 | 1M | 1M, 0805 |
| SW2 | SKRPACE010 | 3.2mm 2.5mm Oval button 50mA Standing paste 4.2mm SPST 16V SMD Tactile Switches ROHS |