Details:
- 1x ATTiny85 (fuses E:FF, H:DF, L:FF)
- 1x 3.686400MHz quartz
- 1x LM75a
- 2x 12-20pf capacitors
- 2x 10-4.7k resistors for i2c pull-up
- 1x 10k resistors
- 2x 0.5-1mf ceramic capacitors for power supply filthering
- 1x schottky diode
- 1x 100ohm resistor
This code provide UART thermometer with 4s period. UART and I2C is software. Features:
- low power device(12µA in sleep mode)
- polarity reversal protection
- easy connect to PC(using uart->usb converter)
- stable UART freq and no errors on 7 methers of twisted pair
- lowcost components
- code size is 3.5 Kbytes (can be less without printf and stdout)
