Raspberry Pi Model A modify to work with 3.3V input (remove 3.3V regulator & Capacitors)

don't plug in USB HuB with 5V external adapter will burn Raspberry Pi & P-HAB board

1. 04 Jun 2014 Balloon launch    

2. 07 Jul 2014 Balloon launch  

3. 13 Jul 2014 Balloon launch  

4. 20 Jul 2014 Balloon launch 

5. 27 Jul 2014 Balloon launch  

5V HAB 

Ready for sell now   23 Jun 2014  

This project is used for  balloons to explore the edge of space. Collecting temperature, humidity, altitude, pressure data sending back through a FM Transmitter and saving all logs into the SD card. Also it can take a photo every 30secs  and then saving it  into  the SD card.

The project use

1. ublox-7Max GPS module

2. Radiometrix NTX2B 434.xxx Mhz 10mW modules.

3. TMP102 temp sensor to monitor Raspberry Pi temperature

4. BMP085  Barometric Pressure/Temp/Altitude Sensor

5. DHT22   / AM2302  Digital Temp & Humidity Sensor

   or i2c HTU21D   Digital Temp & Humidity Sensor

6. TRACOPOWER  3.3V (TSR-1-2433 ) DC/DC converter

   (DC input Min 4.75V )

    up to 96% efficiency - No heat-sink required ( for longer battery life)

     3.3V provide to Raspberry Pi & Rs Pi P-HAB module board

7. Raspberry Pi Camera kit ( take photos save into SD card)

3.3V ver Pi-P-HAB board plug-in 3.3V model B

GPS antenna & FM antenna &

USB SDR Encoder (RTL2832U-based DVB-T devices (RTL-SDR)
the eduhab.py send GPS location, tmp102, DS18B20, BMP085, DHT22 information through FM UHF Transmitter,  the eduhab.py have 3 commands

eduhap.py -s   short data stream mode  send GPS location and BMP085 Temp only ,

 but all logs save to SD card eduhab.py -p send data  also take photos every 30sec

eduhab.py -c  prid change the data stream "twick" to "prid"

log file save in SD card

  data format

 EDUHAB1,00:33:27,253,52.472775,-1.90956,11,1,149.5,-24.3,57.6,-23.2,990.8,188.4,1.0,22.8

  EDUHAB1     callsign

  00:33:27  TIME        

  253          LOG COUNTER

  52.472775,-1.90956       latitude, longitude   GPS location

  11       satellites           ---  ublox Max 7Q GPS module   

   1        flightmode        ---  ublox Max 7Q GPS module      

   149.5     altitude         ---  ublox Max 7Q GPS module

  -24.3       temp          DTU21D  - Temp   External      i2c  adress 40

  57.6        humidity        DTU21D - Humidity          i2c   adress 40

  -23.2       temp2              BMP085   - Temp   External     i2c adress 77

  990.8      pressures2       BMP085  -  Pressure               i2c adress 77

  188.4      alt2                   BMP085   -  altitude               i2c adress 77

  1.0          temp3            TMP102    -  on board Temp     i2c address 49

  22.8         temp4            DS18B20    - Temp External      1-Wire GPIO 4

  Tracking using a SDR software defined radio (SDR)

  Run sdrsharp.exe and you will see the following window:

 open DL-Fldigi, click Configure → Sound Card Click Capture → SDR(Virtual Audio   Cable)

  You should now be able to click on the payload as normal and decode :

  received data with checksum ok

received data with checksum error

  short data stream mode 

full data stream mode