Better living through microcontrollers
- 3. • • • • • •
- 5. • • • • • • • USB for programming Digital ports External power/Battery Analog ports Serial ATMega328
- 23. ANTENNA CONNECTOR UHF RADIO THERMOMETER GPS MODULEVOLTAGE DIVIDER CONNECTOR FOR SECOND THERMOMETER
- 24. Telemetry 50 bps RTTY FSK In English… One tone for 1 Another tone for 0 50 bits per second 400Hz difference between the tones ASCII $$GAGA1,5131,09:58:23,52.2354,0.09 40,3394,7.64,26.1,13.4,64*1E
- 25. Telemetry 50 bps RTTY FSK In English… One tone for 1 Another tone for 0 50 bits per second 400Hz difference between the tones ASCII $$GAGA1,5131,09:58:23,52.2354,0.0940, 3394,7.64,26.1,13.4,64*1E Seconds since boot UTC Lat / Long Altitude Vertical rate m/s Internal ℃ External ℃ Checksum
- 26. • • • • • •
- 31. SERIAL PORT
- 35. • • • • •
- 40. R2 R1 V0 Level 0 0 0 Sync 0 1 0.3 Black 1 0 0.6 Grey 1 1 1 White
- 42. No USB. Need FTDI cable Digital ports External power/Battery Analog ports Serial ATMega328P
- 47. • •
- 48. RGB LED Three wires needed: +ve GND Data Start bit 6-Bit Bulb Address 8-Bit Brightness 4-Bit Blue 4-Bit Green 4-Bit Red Idle bus state: Low Start Bit: High for 10µS 0 Bit: Low 10µS, High 20µS 1 Bit: Low 20µ, High 10µS Shift register per LED
- 65. ATtiny85 8K of Flash 512 byte of SRAM 512 bytes of EEPROM 5 I/O ports ATmega32u4 32K of flash 2.5K of RAM