Hello,
Im a mechanical engineer (1. semester so no skill here) from germany and I want to learn a little about electronics. I bought an arduino mega (real easy microcontroller) and read up a bit on how transistors and diodes function.
I managed to make some leds light up (multiple tries) and got the arduino to fit the intensity of an LED to the volume of sound that an electret microphone picked up.
pic shows the connections. the open one was directly in one of the pins. note exactly sure on them, but the arduino only got signals in a pretty small range.690-740 instead of 0-1024) is that normal with the way I hooked it up?
Thanks for that answer.
fortunately I had already mapped the input on 0-255 to light up the LED properly, I was just wondering, wether I had destroyed my sensor.
What I want to do next is to give me proximity alarm in case russian super-killers are approaching from the back. I have bought an Ultrasonic receiver and a transmitter (UCT-16M02 and UCR-16M02) but I am unsure as to how to connect them (sorry for the weird english by the way) to the arduino.
Later I will have the same question for a temperature sensor (KTY-81-2) so if you have general information where to find that kind of info Id be very grateful.
The mic just had it on the data sheet. Why cant they not just make that common...