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shai posted a discussion
Hello, I designed a quadcopter frame with the Pixhawk centered but sitting ~12cm higher than the motor/propeller plane. Can there be any problems because of that?
Jul 15, 2016
shai posted a discussion
Hello, I have 2 sets of telemetry radios.Both sets are of the 433MHz version. Is it possible to pair a radio from set A with a radio from set B ?
Nov 7, 2015
shai posted discussions
Sep 27, 2015
shai replied to shai's discussion Strange acceleration reading
"Thanks for your help.
This is really frustrating. I can't find any information about the  
FAILSAFE_GCS-0, FAILSAFE_GCS-1 errors."
Aug 25, 2015
shai replied to shai's discussion Strange acceleration reading
"Thanks for the information.
But I'm still having trouble understanding the graph.
Please walk me through it...
 
Around time 25 the following error kicks in:
Err: FAILSAFE_GCS-1
It disappears around time 60.
 
Then around time 100 the following…"
Aug 24, 2015
shai replied to shai's discussion Strange acceleration reading
"Thanks for your reply!
As you can see, the Pixhawk enters into FAILSAFE_GCS-1 and later FAILSAFE_GCS-0.
What is the reason?
What does each failsafe mode mean?"
Aug 23, 2015
shai posted a discussion
Hello, I downloaded the flight logs from my Pixhawk through the Mission Planner Software and saw something strange.While the X and Y Acceleration Graphs where centered around 0, the Z Acceleration was centered around -10.logs.pngIs this normal?What…
Aug 22, 2015
shai posted discussions
Aug 8, 2015
shai replied to Grazziani Resende's discussion How to fix Pixhawk with 6s lipo battery and showing difference of volts of real battery voltage?
"Hello,
How do you determine the "real" battery voltage?What power module are you using?"
Aug 2, 2015
shai posted a discussion
Hello,I'm using the Pixhawk autopilot with a telemetry link and a 6 channel Spektrum transmitter. 6 channels don't don't allow me to cover all the flight modes that I desire to use. Question:Is it possible to change the flight modes of my quad in…
Jul 22, 2015
shai posted a discussion
Hello,I'm using the Pixhawk flight controller on a Quadcopter.With the throttle stick on my RC transmitter all the way up - My ESCs will deliver current well above the rating of my brushless motors - effectively burning the windings.I know that I…
Jul 20, 2015
shai posted a discussion
Hello,As a learning project - I'd like to build a PID stabilized see-saw (DC motor with a propeller on each end).At the center of the see-saw teetering axis I need an inclination sensing element.Do you think a fully featured AHRS is required or a…
Mar 22, 2015
shai posted a discussion
Hello everybody! I was looking on sparkfun.com to buy a 3-axis accelerometer for learning and training purposes. From what I understand, some of the accelerometers have an integrated interface (SPI, I2C, etc...)  while others simpler versions output…
Jan 20, 2010
shai replied to falldeaf's discussion accelerometer, gyro or infrared?
"Chris,

When I said: "astronauts in the space shuttle" I didn't mean 100 miles above earth.
I meant thousands of miles away from earth gravitational field.
Than and only than you are truly weightless.

To sum it up,
When people say they "feal…"
Oct 15, 2008
shai replied to falldeaf's discussion accelerometer, gyro or infrared?
"Hello falldeaf,

I think you have a mistake.
A 3-axis accelerometers will show 0 G on every axis when stationary or at a constant speed.
In the event of a free fall parallel to the Z axis, the value on this axis will show 1 G while the X and Y axis…"
Oct 13, 2008