jfriedt / lora_sync

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ca223e024   Jean-Michel Friedt   orbimote avec sof... 
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  # OrbiMote :: Hardware  
  
  ## Schematics   
  * Done with [Eagle 7.7 Express](https://www.autodesk.com/products/eagle/free-download).
  
  ## Bill of material
  
  * IMST iM880A
    * MCU: STM32L151CB - 128K FLASH, 10K RAM, Timers, SPI, I2C, USART, USB 2.0 full-speed device/host/OTG controller,DAC, ADC, DMA
    * RADIO: SX1272
  * or [IMST iM880B-L](https://wireless-solutions.de/products/radiomodules/im880b-l.html)
  * or [IMST iM881A-M](https://wireless-solutions.de/products/long-range-radio/im881a.html)
  * MPL3115 : temperature, pressure
  * MMA8451 : accelormeter
  * MAG3110 : magnetometer
  * reed switch
  * button
  * power switch
  * SMA and UFL antenna connectors
  * CR2032 battery holder
  * plug for AA lithium battery
  * pin header for JTAG/SWD
  * pin header for RXTX
  
  ## Header for JTAG/SWD
  Noted as JP1
  
      Pin 1 : GND
      Pin 2 : VCC
      Pin 3 : JTCK/SWCLK (pin 2 of the iM880a)
      Pin 4 : JTMS/SWDAT (pin 3 of the iM880a)
      Pin 5 : JTDO       (pin 4 of the iM880a)
      Pin 6 : JTDI       (pin 5 of the iM880a)
      Pin 7 : RESET      (pin 7 of the iM880a)
  
  ## Header for RXTX
  Noted as JP2
  
      Pin 1 : GND
      Pin 2 : RX
      Pin 3 : TX
  
  ## GNSS additional modules for near-space applications
  
  According [CoCom](https://en.wikipedia.org/wiki/CoCom) regulations, most of commercial GPS modules stop at altitudes higher than 18000 meters and for speeds higher than 1000 knots (1852 km/h).
  
  Here is a list of GPS modules : [gnss_modules.md](../gnss_modules.md)
  
  ## Barometers for near-space applications
  
  Here is a list of barometer components and modules : [barometers.md](../barometers.md)