E10 Can a Hall Effect sensor by used for localisation in ZoomTown
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- เผยแพร่เมื่อ 3 ต.ค. 2024
- E010 - Localisation is critical for autonomous robot navigation, often requiring multiple sensors. While exploring a hall effect sensor for localisation, it was discovered it might also be useful for reading the road signs in ZoomTown.
#HallEffect, #A3141,
Some of the technologies explored in this experiment include, but is certainly not limited to:
[*] Autonomous Robotics
[*] Photo reflective sensors
[*] Time of flight sensors
[*] Hall effect sensors
[*] Rotary encoders
[*] Odometry
[*] Line following
[*] Color recognition and detection sensor
[*] Automatic route planning
[*] Localization
[*] Robotic cars
[*] Dead Reckoning
#Robotics #PICO #Localization
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I tried reed switches for a door switch using pi pico, to get notifications when my toolsheed door was opened or closed. I kept having the issue with the reed switches getting stuck. I tried about 3 of them before ordering some of these hall effect sensors, i think it will be a great solution. Your video is a good demonstration of the accuracy and sensetivity of these sensors. Enjoying your videos for the zoomtown project!
Hi Gordon,
Thanks for stopping by and watching the video! Reed switches will either work forever or be trouble forever, especially the inexpensive ones.
I am glad you are enjoying the experiment and there are many more videos to come. Once we get into programming and testing I think it will be a lot more interesting, and no doubt frustrating when things go wrong. Whether things work or not, something is there to be learned in the experience which is what I enjoy (not to mention sharing it with all those with similar interests).
Cheers!
Chris
Great solution! Would it be possible to implement reading the hall sensor with interrupt routines with the pico W? In your case it is not necessary, but interrupts are something I would like to learn more about. Thanks for your thoughtful content.
I don't see why not, the hall effect sensor is nothing more than a switch from the perspective of the PICO W. You may want to check out this video
th-cam.com/video/EisWWPyzNH0/w-d-xo.html
Cheers!
Chris
Another good video. It looks like it's a useful sensor. What is the actual part number of just the HE chip? The test code you used would be helpful, I can see it is a modified version of the HE python code on your download page.
Hi Peter,
Thanks for the kind words, always appreciated. The Hall Effect sensor part number is A3141, which is obsolete but still widely available for around $0.25 each on Amazon. There are a few other PNs too: A3144, A3143, and A3142. I was not planning to put up the source code for the testing phases, however, I have had several requests. I will try to put something up during the holiday season when I have some extra time.
Cheers!
Chris