This weekends video project
Added 2020-05-22 09:07:07 +0000 UTCso im working on getting the powerglove video out this weekend (hopefully, it may not get done in time and I go to plan B). but im concentrating on just the fingers at the minute, which have bend sensors in them. just long thin flexible circuit boards with thin slats of a material that when its pulled slightly apart increases in resistance. well anyway, they give a voltage change of about 0.4v. so im making an interface circuit for each finger. It has been on my to do list to make a circuit like this for a load of other sensors and stuff, for instance the gyroscopes in the lightsaber theremin.
anyways, ill post a vlog about it when I have finished the rat nest of wires and stuff.
if you want more adjustment on the boost swap R5 with a pot. I think its good to have a boost and an attenuvert (even though their function is a little bit similar) as its just good for attenuvert to be more fine tune, and the boost is a big coarse twist from 0 gain to 10 gain.
anyway I have done the stupid thing of soldering 4 of these circuits onto 1 tiny bit of protoboard and its an absolute mess, I sure hope it works haha.
Comments
What is the Farad of C1?
JX3D
2020-05-30 23:33:00 +0000 UTCsomething to note, as some may notice doing it in this order would mean the offset circuit is very sensitive. ( I may reduce R2. but im just going to leave it as it is for this iteration, you'll zee what I mean when you see the Stripboard) this is because the sensor input is quite offset, if it is boosted first, it would go beyond the scope or 12v. also the offset changes depending what amount of voltage you drive it with
Look Mum No Computer
2020-05-22 10:39:53 +0000 UTC
