Inmoov starter finger gets its nails clipped with conductive foam insert

Early days to see how it performs :-

700 ohms resting

300 ohms compression, by manual test.....

GroG

10 years 5 months ago

Great work elves !

I'm a little flummox on how his finger jaw comes together ?

I split the finger tip in half with a 3mm gap between them.... Both are stuck to the base part No.5.

I have lined both halves with copper sheet (self adhesive) and soldered a pair of wires to them.

The Conductive foam (Half a 3M earplug) is sandwiched between them...

There is enough flex in the (static) pla to activate the foam... next time i will try flexible PLA and that should be even better.

RobertoPreatoni

10 years 5 months ago

That is a a much better solution rather than a dumb switch at the end of the finger...

hairygael

10 years 5 months ago

It's nice to see Gareth is searching in that direction for finger sensors.

This was one of my early  design test done with QTC pills and also with conductive foam. Unfortunatly, splitting the finger in half implied a lot of force to get finally some results as a probe.

This is the reason I redesigned the finger tip, cutting it the other way and using the conductive foam. The minimal pressure applied to the finger exerce rapidly a result on the foam.

Now, that being said, the self made foam you are using might reacting much better than the one I use. For that reason I would be interested if you could test also your foam with my released design.

https://cubehero.com/physibles/hairygael/InMoov_Finger_Sensor