- Mon May 17, 2010 10:14 am
#101131
Sebmadgwick, thank you for the suggestion! However I do not think that this is the case - I power my board from the 7.4 V LiPo battery through the 1 Amp voltage regulator with a lot of filtering capacitors on the power supply lines and right next to the MCU. The problem does not manifest itself when I take signal from the amplified outputs - if you would be correct regarding the overall drop in voltage (and I do use use the Vcc as my reference voltage), then this drop would be noticeable when I use either the amplified or direct output from Gyros, but it happens only with the direct output.
Moreover, if I take the 6 DOF Razor IMU out of my board and just by itself connect it to the power supply on my work table and use digital voltmeter to measure pins' output I see that the output voltage rapidly drops on non-amplified gyro pins, while it is steady as a rock on the amplified ones. If you have this IMU handy I would greatly appreciate if you do the voltmeter test just to confirm that this is either the problem with the IMU design or just the issue with the one that I have.
Thank you.
Moreover, if I take the 6 DOF Razor IMU out of my board and just by itself connect it to the power supply on my work table and use digital voltmeter to measure pins' output I see that the output voltage rapidly drops on non-amplified gyro pins, while it is steady as a rock on the amplified ones. If you have this IMU handy I would greatly appreciate if you do the voltmeter test just to confirm that this is either the problem with the IMU design or just the issue with the one that I have.
Thank you.