"Necro bump, but I figured I'd add my solution to the pile since this post is at the top of Google search for the same problem I was having. These were v1 radios and this was with an APM 2.5 board. Both radios showed up in 3dr radio configuration,…"
"I invested in RFExplorers when they initially came out and used them to troubleshoot a lot of EMI issues. After spending a hundred hours scanning every piece of equipment in my fleet I narrowed it down to 2 particular components - MAX7456 chip on…"
Hey gang,Looking for a little guidance here. One of our fliers burned out his APM board and I'm attempting a repair. All the info I have right now is that he connected the battery as well as USB at the same time...I'm waiting on confirmation to…
Just completed another round of noise chasing on the board.
If you're running MinimOSD with a UHF system...don't forget to tie off your tx/rx lines with a toroid. I went a step further and soldered 330ohm ferrite beads inline on the tx…"
I don't know how big of an issue this is, but I wanted to report back that I figured out how to "unbrick" these minimosds when you get stuck with the failed to talk to bootloader issue. I haven't nailed down the exact root cause, but I…"
"Finally got around to running some RF Scans of my minimosd boards.
I have 3 - RCTimer v1.0, ebay clone v0.1, 3DR minimosd. They're all noisy on the UHF control band, so I was curious to see how much of a dampening effect some copper foil would…"
"linear control systems -> pid control -> frequency domain design -> state space control -> "optimal control" -> and then the oh em gee - Linear quadratic regulator systems... good lord I have a lot to read up on"