Hi,
Ive got the us-100 ultrasonic sensor which works off 2.4-5v, im switching it on using a 2n3906, the problem is that i cant get it to switch off and stop using current. I take a reading every ~30 seconds, on reset it uses no power between vcc and the 2n3906. the first time it takes a reading and onwards it uses current non stop.
how do i get it to stop after im done with a measurement?
Im using p2.1 to turn on and off the base,
So the code goes:
//wake up after 30sec
//turn on base on p2.1
{
take distance reading
}
turn off p2.1
any ideas?
