A set of snap on fenders for your XRP chassis that trigger gpio signals when the robot runs into objects (like a wall).
8h 50m
1× print file
0.20 mm
0.40 mm
150.00 g
2
8
0
180
updated August 17, 2024

Description

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This is a working prototype but still a work in progress…I underestimated how much time this project would take and overestimated the free time I would have to work on it ;)
 
My addition to the XRP platform is a set of clip-on bumpers that contain limit switches (like the end stops found in some 3D printers). You clip them on and wire it to a SparkFun Qwiic GPIO board. This way there is no soldering or tools other than a pain of wire strippers needed. There is an interrupt pin that goes to the extra port on the XRP main board. When a bumper is activated, the interrupt goes low and you would then poll the I2C line to read which bumper was activated. This could be used for crash and object detection for autonomous driving of your XRP.

At the last moment I revised the clips to work better so the printed version in my pictures are not as good as what I have uploaded. If there is interest, I'll continue with a tutorial after the contest ends.

I'm including my Fusion 360 files in case you wish to remix. 


The Sparkfun GPIO Qwiic board can be found here:

https://www.sparkfun.com/products/17047


And the Limit Switches I used  can be found on Amazon (the Sparkfun limit switches are too big):


amazon.com/REIFENG-Mechanical-Vertical-Printers-Accessories/dp/B08CDF3Q6T
 

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The author marked this model as their own original creation.

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