About

Location

Stanford, CA


Please tell us a bit about your UAV interest

Pixhawk


Hometown:

San Francisco


Activity Feed

Shawn Gao posted a discussion
Hi guys,I'm trying to do a project where I use a 3 position switch to control 3 different states of some auxiliary hardware on my plane. I plan to set this channel to passthrough, but I need to implement some timing logic. Specifically, I want to be…
Aug 6, 2016
Shawn Gao replied to Shawn Gao's discussion Changing PWM Frequency for Servo Rail Output
"Hi James, thanks for letting me know. I wasn't actually able to find said parameter on QGroundControl using a quad configuration. Is this parameter exclusive to certain standard firmwares, frames, or control stations (eg. Mission Planner)?"
Jul 8, 2016
Shawn Gao posted a discussion
Hi there,I'm working with the Pixhawk right now and I'm wondering where the standard frame controllers are stored in the PX4 Firmware code. What I'm trying to do is set out a custom mission with my own additions, but I don't want to rewrite all the…
Jul 6, 2016
Shawn Gao replied to Shawn Gao's discussion Changing PWM Frequency for Servo Rail Output
"Not sure you understood what I meant. I was referring to the output PWM frequency that drives my ESCs being 400Hz and I want them to be 50Hz."
Jul 5, 2016
Shawn Gao posted a discussion
Hi Everyone,I'm trying to set up a quadcopter right now, and realize that I only have 50Hz ESCs. I've probed the outputs when using the standard quadcopter frame with the Pixhawk and found that it outputs 400Hz signals. I can tell that the frequency…
Jul 5, 2016
Shawn Gao replied to Shawn Gao's discussion Controlling Pixhawk I/Os
"Bump, any help would be nice! Thanks!"
Jun 17, 2016
Shawn Gao posted a discussion
Hi there,I'm currently working on a project that requires me to use up to 10 of the I/Os on the Pixhawk. I'm planning to make an autonomous drone that does particular things, so I need to write custom control code. Looking at the base framework, I'm…
Jun 15, 2016