Components (7)
| Reference | Value | Description |
|---|---|---|
| U3 | ATmega168A | 20MHz, 16kB Flash, 1kB SRAM, 512B EEPROM, DIP-28 |
| U4,U6 | PCF8574N | 8 Bit Port/Expander to I2C Bus, DIP/SOIC-16 |
| U5 | DS18B20 | Programmable Resolution 1-Wire Digital Thermometer TO-92 |
| C4,C5 | 20 pF | Unpolarized capacitor, small symbol |
| C6-C8 | 100 nF | Unpolarized capacitor, small symbol |
| R2-R7 | 4.7 | Resistor |
| Y2 | 16 MHz | Two pin crystal |