I'm not an expert on voltage dividers, but if you use the proper ratio, what's the harm? 12v in with a 2/1 ratio would give 4v out, no?Mega is powered via barrel plug from the 12v batteries using the Mega's built in voltage regulator.
1) Thanks for the info! I'll get this changed. You said "10k:13k would give the same result" did you mean "13k:10k" ? Would you recommend something like 110k:10k instead to get an 11/1 ratio would would bring the 6v down to 0.5v to be safer for the pins?2) I'm not sure on the current. I'll have to measure that again to check. I know the 12v input is wasteful and will likely be changing that, but I don't think this is related to our main issue. We've had the 12v battery pack for other flights and it worked great. My issue with GPS reception only arises when the camera battery packs are turned on. Also, if I turn on the camera battery packs, but physically take the unit out of the payload box (away from the cameras), it will work fine. Literally, the act of just putting the electronics into the payload box or not is what causes/replicates my issue.
Thanks for this! I had looked for GPS/camera interference, but most articles I read were related to interference coming from the camera's WiFi. My camera doesn't have WiFi at all so I didn't think it would be an issue. I'll try creating a faraday enclosure for the cameras to see if that helps.
The tracker works perfectly when connected inside and/or outside of our payload box and with USB power input
The tracker works when inside the payload box with used batteries, nearing end-of-life