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CHANGELOG.md

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Dropkick CHANGELOG

2023-10-15 CAM V5 Assembly

  • assembled and tested first v5-cam board - defective CAM receiver part

2023-10-01 CAM V5 Board

  • Use internal antenna for the CAM-M8C GNSS Module
  • revise CAM-M8C layout to get a cleaner ground plane
  • add 30 ohm resistors on CAM-M8C I2C lines to reduce noise
  • revise MPU-6050 PCB layout to more closely match the datasheet
  • add header lines for SWD programming, switch to 2.0 mm spacing on header

2023-09-10 SAM V4 PCB Board

I decided to revise the SAM variant PCB to use more modern ICs:

  • Change GNSS to the u-blox SAM-M10Q (the M10Q is pin compatible with the M8Q)
  • Change IMU to TDK InvenSense ICM-42688
  • Add hardware interrupt lines from the IMU
  • Change barometric sensor to the Bosch BMP-390
  • Switch to a USB-C connector

2022-09-03

I have resolved the buffering issue in the GNSS reporting stream and continue to work on developing analysis tools using Octave.

2022-08-18

I have collected the first log files from several jumps. GPS data is usable, although there are intermittent u-blox buffering errors interspersed in these logs. I have been exploring the feasibility of pose reconstruction from IMU log data. I am using GNU Octave for this investigation. The code resides in the ./analysis subdirectory. It should be considered entirely experimental at this stage - don't trust the accuracy of any of that code based on where I am today.