0
\$\begingroup\$

Big newbie here.... I had a quick question on where I should look if I want to design a switch that reacts to current / battery level? i.e. current above a certain level, circuit on, current below that level, circuit off.

I have a raspberry pi attached to a roomba for automated control. The raspberry pi is connected to the battery with a 5V regulator going to a USB. It works fine, but if it doesn't get back to the base in time the pi ends up draining the battery completely. I would like to make a circuit that turns a switch off when the voltage gets too low.

Any ideas on where I should start? Or is the whole thing dumb to begin with? lol

Thanks in advance!

\$\endgroup\$
3
  • 1
    \$\begingroup\$ You should try a little research with other things that detect when your battery is low and there are a lot of ways to do this, i.e. voltage comparison. You shouldn’t be measuring current. \$\endgroup\$
    – user103380
    Mar 20, 2020 at 15:39
  • 1
    \$\begingroup\$ Battery supervisor ICs. (and you want to turn off when voltage is too low, not current) \$\endgroup\$
    – user16324
    Mar 20, 2020 at 16:01
  • \$\begingroup\$ Ok thanks for the help guys! I think I'll try looking into voltage comparators and ICs \$\endgroup\$ Mar 20, 2020 at 16:27

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.