Let's say you have a sensor on your beloved (or hated) bot.
You want to fix it so you can easily tune the distance between it and the floor (for example).
You can use a bunch of screws and add more or less washer to it, but what if you want something accurate because with washer your accuracy will be limited by their thickness?
This is what i did:
In my case, in my current test platform, i wanted to use a ps2 mouse and they can be quite stubborn with the distance from the floor.
I was thinking about it while playing with a pen in my right hand. And then, (macgyver theme song) i had an idea.
Maybe i can use some spring to fix the mouse, so if i want to tune it, i just have to screw/unscrew some bolt.
What i used:
A bunch of bolts and nuts:
Some cheap bic pen, 3euro for 4:
I had to fix the mouse on another sheet of epoxy because i add to lower everything:
Used some nylon washer to avoid some nasty shortcircuit :
Now, just extract the spring from the pen:
Size of the spring in cm (0.9055 inch)
Put all the pieces together:
Closed up view:
Now, if you want to raise your sensor, juste screw a little at a time, and if you want to lower it, just unscrew, easy.
Thing that can be updated:
I wanted to try thermoforming some plastic to make the white mount in the photo, next time i'll take more time to do something better.
I'll drill slower too, because plastic tend to melt really fast, and i'll use a bigger drill bit, i threaded the plastic when using a too small one.
ps1: i'm so used to spam ctrl+s to save when i write, that's annoying...
ps2: next time, i'll remove the dust BEFORE taking photo
ps3: the first photo looks a bit crappy, dunno why, higher res next time ?
ps4: my first contrib to lmr, yeah!
ps5: dont know if this should be posted as tip/walkthrough
Inspiring,
). I must admit the springs do look good though, and it’s nice to be able to adjust with just one nut.