Hi, I'm planning a project, and I want to double check it before building the prototype, I'm very new at this and I dont want to fry my arduino.
The arduino will use some sensor data to play tones on the speaker, light 2 leds (both led do the same), and move a servo.
Anyone see something out of place? will I burn something?
Thanks.
Anyone see something out of place?
You can't use the RST line to drive an LED.
A 2N3907 is an NPN transistor and you have drawn a PNP transistor.
I would not use that circuit for the speaker, there is lots wrong with it.
Sorry my bad, I confuse pin numbers, and there were 3906.
I just need a simple sound generator with minimal parts. Could you explain what could be wrong with this please. I will be using a small speaker.
Could you explain what could be wrong with this please.
It puts DC through the speaker, which is bad.
It puts too much DC through the speaker which is double bad.
While it is not perfect this is a much better circuit to use.