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Kyle Grim's Discussions
Brand New V3 Saturated Accelerometers
Started this discussion. Last reply by Vaibhav Paraashar Apr 3. 15 Replies 0 Likes
Hey all- I'm a newb to DIY Drones but have been an Arduino tinkerer for a while. I received my new V3 in the mail yesterday; soldered it up and loaded the code with no issues.Upon first power up it…Continue
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shane.sanford replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Charles is absolutely correct about commenting out the lines with YELLOW_LED. With it in there anytime the speed is less than the min speed filter the yellow led line in the code will force the red led on -ie anytime it is setting on your…"
charles1317 replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hi Kyle,
I found that the red led staying on had nothing to do with the accelerometers. If you look at line 124 in arduimu.pde you should see that the yellow led is defined to the same output as the red led for version 3 of the arduimu. On the V3…"
jamal mcnab replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"i cant tell but is both the red and blue light on or just the blue light on the v3"
Kyle Grim replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hey Joseph-
I wound up returning my IMU to 3drobotics and they have fixed it. I should be receiving it in the mail tomorrow. They did find a problem with my accelerometers, however they did also tell me that they've seen some…"
Vaibhav Paraashar replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hi kyle. I got the V3 by mail last week. I'm totally new to IMUs. I don't know how to get started. I believe the first step after unboxing is to solder the 6 pin header on to the FTDI slots right? Could you post pictures of your assembly…"
Joseph Nicholas R. Alcantara replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Kyle,
I have the same problem, any updates on how to troubleshoot this?
Thanks"
Christophe Sandoz replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hi Mikmag,
I uploaded the 1.9 code "as is" and it gave the red led "on" meaning tha the gyro were saturated. As I didn't connect the Arduimu to anything and I powerd it only through the FTDI cable, I don't know if this…"
Mikmag replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hi Chris! Maybe a little bit off topic, but is the unmodified 1.9 code not giving correct measurements? Does it matter if I power it on the FTDI-pins or not?
Magnus"
Kyle Grim replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Thanks, Chris!
I wound up sending my board back in to see if I was experiencing a physical problem, but if they report that the board is fine I will definitely try altering that setting. If they find a physical problem with the board I will let you…"
Christophe Sandoz replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Hi Kyle,
I had the same problem and I'm finally getting closer to correct readings. Since I'm testing the board by itself with an FTDI cable, I disable this parameter in the "user parameter" of the arduimu.pde file that I…"
Christophe Sandoz replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"Actually, it is a range of + and - 4g for a full scale of 8192.
0g is usually set a half scale ( at 4096 ) so for a 1g value in the Z vector the output should be
4096 / 4 = 1024 for the normal gravity
4096 (0g) + 1024 (normal gravity) = 5120
does…"
Christophe Sandoz replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"here's my latest investigation :
in the arduimu.pde file, it is stated that the gravitiy value of the mpu is set to 4096 to matc the 4g range
but in the specs of the mpu6000 chip it is mentioned that to get a full range of 4g the condition must…"
Christophe Sandoz replied to Kyle Grim's discussion Brand New V3 Saturated Accelerometers"I got the same, I received my V3 board early this week and didn't get a chance on getting this red led out...
Cheers Chris"
Kyle Grim posted a discussionBrand New V3 Saturated Accelerometers
Hey all- I'm a newb to DIY Drones but have been an Arduino tinkerer for a while. I received my new V3 in the mail yesterday; soldered it up and loaded the code with no issues.Upon first power up it returned a solid red light (sensors saturated). I booted the windows test program and although the IMU does return information, it appears that the accelerometers are way out of wack. I reloaded the code multiple times... altered the scalars of the accelerometer data by orders of magnatude...…See More
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