Public Lab Wiki documentation

Balloon Telemetry Kit

This is a revision from January 25, 2011 18:35. View all revisions
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This kit was created as a means to improve the georeferencing of images captured using balloon mapping. This kit is based around the open-source Arduino mircocontroller. Utilizing a GPS receiver, barometric sensor, three-axis accelerometer and data logger, this module allows for the synchronization of data with images captured from a Canon camera running the CHDK. By utilizing the USB remote function of the CHDK software the camera can be triggered in sync with the logging of the sensor data.

Along with the georeferencing capabilities, this kit captures the position of the camera in relation to the ground plane. This is done by capturing the x/y rotation of the camera with the accelerometer.

Sample log data: lat,long,Date(yyyy-mm-dd),Time(hh:mm:ss:cc),alt(m),course,speed(knots),speed(mph),speed(mps),speed(kmph),pressure(Pa),baroAlt(m),xAxis(deg),yAxis(deg) 40.76892,-73.94951,2011-1-21,21:43:15:0,39.50,227.29,0.00,0.00,0.00,0.00,100297.75,85.86,-57,-80 40.76892,-73.94951,2011-1-21,21:43:29:0,39.50,227.29,0.00,0.00,0.00,0.00,100380.00,78.96,-70,-65

Arduino code available here