better living through microcontrollers
TRANSCRIPT
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USB for programming
Digital ports
External power/BatteryAnalog ports
Serial
ATMega328
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ANTENNA CONNECTOR
UHF RADIO
THERMOMETER
GPS MODULEVOLTAGE DIVIDER CONNECTOR FOR SECOND THERMOMETER
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Telemetry
50 bps RTTY FSK
In English…
One tone for 1Another tone for 050 bits per second400Hz difference between the tonesASCII
$$GAGA1,5131,09:58:23,52.2354,0.09
40,3394,7.64,26.1,13.4,64*1E
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Telemetry
50 bps RTTY FSK
In English…
One tone for 1Another tone for 050 bits per second400Hz difference between the tonesASCII
$$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/sInternal ℃
External ℃
Checksum
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SERIAL PORT
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ATMega328P
Three wires needed:+ve
GNDData
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R2 R1 V0 Level
0 0 0 Sync
0 1 0.3 Black
1 0 0.6 Grey
1 1 1 White
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No USB. Need FTDI cable
Digital ports
External power/Battery
Analog ports
Serial
ATMega328P
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RGB LED
Three wires needed:+ve
GNDData
Start bit
6-Bit Bulb Address
8-Bit Brightness
4-Bit Blue
4-Bit Green
4-Bit Red
Idle bus state: LowStart Bit: High for 10µS0 Bit: Low 10µS, High 20µS1 Bit: Low 20µ, High 10µS
Shift register per LED
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Only 142 connections to solder!
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ATtiny858K of Flash512 byte of SRAM512 bytes of EEPROM5 I/O ports
ATmega32u432K of flash2.5K of RAM
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