David Pawlak
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multi channel telemetry w 3dr V2

Started Jan 19, 2019 0 Replies

It's been ages since I've been here so I'm not up on the latest.I know there's been discussions about multi-channel coms with these radios, I think there was a few years ago, but I can't find…Continue

transmitting unformated (not RS232) data via 3DR telemetry radios

Started Apr 9, 2018 0 Replies

I want to send a non-RS232 type signal using the 3DR telemetry radio. No start, stop bits etc. Just bits to be reflected exactly on the other end.They do have a format but its not the standard RS232…Continue

An Important Restriction?

Started this discussion. Last reply by David Pawlak Feb 3, 2014. 3 Replies

I was walking through downtown yesterday, in a crowded downtown "promenade". A downtown area of about 4 sque blocks in a big city where the streets are closed to vehicular traffic.All of a sudden I…Continue

Tags: Stabilize, Arming, GPS

Alt Hold Just can't get it!

Started this discussion. Last reply by David Pawlak Oct 28, 2013. 1 Reply

This flight is short. And I should have tested from higher up!I have everything working except alt hold. I can't find a combination of gains that work. It always oscilates.This time, I put it in…Continue


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Profile Information

About Me:
Electronics Development Engineer Since 74
Please tell us a bit about your UAV interest
Building Big quads and hexes. Greater than 750mm Higher Payload.
Precision autonomous flight
Vancouver Canada

David Pawlak's Blog

Loss of Altitude after horizontal run in Alt Stabilized modes.

Posted on October 9, 2014 at 11:55am 58 Comments

Some of you may have noticed that your multi-copter will lose from 1.5 to 3 or 4 meters at the end of a horizontal run when in any of the Altitude Stabilized modes, like Alt Hold, Loiter (and PosHold for 3.2 candidates) or Auto.

Several heated debates have considered the reasons and possible causes, until finally a more demonstrative test…


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