Dear All,
I am trying to build this autonomous rover using the parts on this wishlist:
https://www.adafruit.com/wishlists/402816
I am going it alone without support from the Coursera Robotics course.
Around the 5:17 mark of this video, I see a terminal block on the IMU with wires leading to the Motor HAT, I assume.
https://www.coursera.org/lecture/roboti ... rack-Hkgbu
Can some more experienced maker venture a guess at how the IMU is connected to the Motor HAT?
My question is about hardware. Do I need to buy a small bread board or some other hardware to connect the IMU to the Motor HAT to the Pi's GPIO?
Thanks for any help!
Calvin
Connecting IMU to Motor HAT in an Autonomous Rover
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- calvinse
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- dastels
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Re: Connecting IMU to Motor HAT in an Autonomous Rover
Not a terminal block... just some female header strip. The IMU board is attached to the chassis by some nylon bolts using it's mounting hole "ears". That board is discontinued but the suggested replacement (https://www.adafruit.com/product/3463) has corner mounting holes that will likely work as well. I'm a little skeptical of mounting an IMU by only one edge like shown. It's be prone to vibrate (i.e. flap) when there is any amount of vibration. You would want to secure it by all for corners to have it's readings accurately reflect the orientation/motion of the robot.
As fort electrical connection, the project in the video just used jumper wires and some header on the breakout.
Dave
As fort electrical connection, the project in the video just used jumper wires and some header on the breakout.
Dave
- calvinse
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- Joined: Mon Mar 22, 2021 5:22 pm
Re: Connecting IMU to Motor HAT in an Autonomous Rover
Dave,
Thanks for the help!
I am more a software guy, so please be patient. So I can buy this 36-pin 0.1" Short Female Header and cut it down to size and solder it to the IMU and Motor Hat?
https://www.adafruit.com/product/3008
Then wire the IMU to the Motor Hat using the female headers?
Then get 4 screws and nuts and secure the 4 corners of the IMU to the chassis and put some cardboard between the IMU and chassis the same way I put cardboard between the Pi and the chassis.
Calvin
Thanks for the help!
I am more a software guy, so please be patient. So I can buy this 36-pin 0.1" Short Female Header and cut it down to size and solder it to the IMU and Motor Hat?
https://www.adafruit.com/product/3008
Then wire the IMU to the Motor Hat using the female headers?
Then get 4 screws and nuts and secure the 4 corners of the IMU to the chassis and put some cardboard between the IMU and chassis the same way I put cardboard between the Pi and the chassis.
Calvin
- dastels
- Posts: 15820
- Joined: Tue Oct 20, 2015 3:22 pm
Re: Connecting IMU to Motor HAT in an Autonomous Rover
That's pretty much it. I advise using nylon hardware for mounting the boards. They aren't going to get any amount of stress and being non-conductive avoids any worry about accidental shorts.
Dave
Dave
- calvinse
- Posts: 3
- Joined: Mon Mar 22, 2021 5:22 pm
Re: Connecting IMU to Motor HAT in an Autonomous Rover
Great! Now I feel like there is light in the tunnel!
Time to go shopping.
Thanks Dave!
Time to go shopping.
Thanks Dave!
- dastels
- Posts: 15820
- Joined: Tue Oct 20, 2015 3:22 pm
Re: Connecting IMU to Motor HAT in an Autonomous Rover
Have fun!
We always here to help. with advice.
Dave
We always here to help. with advice.
Dave
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Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
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