suspect output from Z Gyro

[small_rc]

I have board version 0.1j
Using PICKIT 2 and ICSP connector I have updated the firmware to latest 0.8beta4
In the Gluon Config the sensor reading for the Z Gyro is suspect.

Gyro Raw is 0 (zero)
Neutral = 31850
Processed is -198.458598

This tells me there is not output from the Z Gyro. I suspect the voltage regulator MIC5252 is not accurate ( or dead ) More testing shows there is no output from the MIC5252

Would it be acceptable to solder jumper SJ4 to provide 5 volts to the Z Gyro or is the 5 volts not stable enough?

Would I have to remove the MIC5252 if I put a jumper across SJ4?

I am unable to get an itty-bitty SOT mic5252. I am only able to get an SOT23 mic5252 at 4.75 volts. It will be a bit awkward to install the larger part.

I am open to suggestions.

Thanks

Jim H

[Tom]

Hi Jim,

That sure is an old board

The MIC5252 should output 4V75. You could use the 5V from the main power, but it could be more noisy. Also, the scaling will be slightly off (4.75 vs 5), but all this won't be showstopper.

The replacement part would be a SOT23-5 MIC5252 at 4.75V. I think you should be able to source that? As an alternative you can indeed use the 5V supply from the main 5V rail.

[small_rc]

Using SMD rework station with hot air soldering gun and new mic5252 of SOT23-5 (correct) size, I was able to replace bad regulator today. Z Gyro works and board now calibrated with version .8beta4 firmware installed.

Board is now on extended burn in test for the next 4 to 6 hours. If it passes that time, I may extend to 24 hours of test.

Making roll and pitch test bed next. I want to strap down the GP and roll and pitch and yaw for an extended test of actually moving the board to exercise the IMU components.

Thanks Tom

Jim H