Discuss Scratch

grodey
New Scratcher
12 posts

resistance range for picoboard?

Hi,
Does anyone know what resistance range is detectable from the picoboard alligator clips? I would like to interface a bend sensor that varies from 25K to 125K ohms and wondered if the board will report that.

Thanks!
SCRAXE
New Scratcher
72 posts

resistance range for picoboard?

They have a 10k pull up to 5V, your sensor goes from the bottom of the 10K to 0V (by the clips) to form a potential divider. The picoboard then uses an ADC on the centre junction voltage.

So you should be able to get something useful from your sensor.

grodey
New Scratcher
12 posts

resistance range for picoboard?

Great! Thanks for your help!

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