AeroMeasure is the hand-held units which reads AeroTracker (new 915mhz) tags.  Currently, this device is used for testing purposes only.  Though, later, the role of this device may be expanded.

This display screen measures distance, ping rate per second (hertz), and rssi.  


The right side of the body has a switch, which currently controls fast-logging of data values. The log system is set to store up to 30 log files and will automatically rollover when log files exceed a set size or number of files.  The current data rates are higher than the SD card can write as bytes.  Thus, log data is written as fast as possible, and truncated when values write speed cannot keep up with the data rate.

Setup of the Wireless

Ultimately, you must edit a file on the SD card to input your home network SSID and password.  You can edit this file one of two ways:

Option 1) Use a linux machine capable machine to edit a file
Option 2) Use another Raspberry PI 3 to boot and edit the file (recommended unless you are Linux skilled)

File to edit: /etc/wpa_supplicant/wpa_supplicant.conf

Example: use the nano editor:

Then edit the values within the parenthesis for ssid and psk.

Details of using another PI to edit the configuration

  1. Remove the microsd card from the PI inside the handheld unit
  2. Insert this sd card in the external PI
  3. Connect up a keyboard, monitor, and then power up the external pi
  4. Once booted, login to the pi with the user: "pi"
  5. use the command: sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
  6. edit the ssid and psk for the local wireless network
  7. type <ctrl>+o to save
  8. <ctrl>+x to exit
  9. reboot the pi with the command "sudo reboot"
  10. login to the pi with the account "pi" again
  11. type "sudo raspi-config" 
  12. Navigate with arrow keys to "Localisation Options" and press enter
  13. Navigate with arrow keys to "Change Timezone"
  14. Use "<back>" to return to the main screen, then select "<Finish>"
  15. Poweroff the PI with the command "sudo poweroff"
  16. Once powered off, unplug the external pi
  17. Remove the micro SD card and reinstall it in the hand-held unit.
  18. That's it!  Your hand-held will now be capble of being accessed from your local network and will have the corrent timezone.



Schematic build in process.

Custom KiCad libraries:

KiCad Project File