Hi Everyone!
I've been struggling with some time now building what I thought would be a very simple project involving an NPN transistor as a switch. It turned out my total lack of electronic knowledge has made the project quite a challenge.
So here we go:
Background: We have a very long driveway that is curvy and lined with thick brush and trees, meaning we have nearly had many head on collisions to date. I want to make a basic remote traffic light system. Initially I had planned to use a motion sensor, but the number of animals wandering around and difficulty of the project discouraged me. Instead, I found some old walkie talkies and opened one up. I attached the speaker leads to a 2n2222 transistor, that is then attached to a 9v battery which powers a light (and possibly a buzzer too in the future). Both our cars will have a walkie talkie on a specific channel and can signal before driving down the driveway.
Circuit Diagram:
Problem:
Well, I don't really know. It's sort of working, the light is just very weak compared to when I directly attach it to the 9v. I tried to measure the voltage but I guess I don't know how to use a voltmeter because the voltage was going down when I triggered the walkie talkie.
Anyway, I'll appreciate any help I can get. Thanks!
P.S. I have some other transistors and a small 12VDC 1A relay too....
I've been struggling with some time now building what I thought would be a very simple project involving an NPN transistor as a switch. It turned out my total lack of electronic knowledge has made the project quite a challenge.
So here we go:
Background: We have a very long driveway that is curvy and lined with thick brush and trees, meaning we have nearly had many head on collisions to date. I want to make a basic remote traffic light system. Initially I had planned to use a motion sensor, but the number of animals wandering around and difficulty of the project discouraged me. Instead, I found some old walkie talkies and opened one up. I attached the speaker leads to a 2n2222 transistor, that is then attached to a 9v battery which powers a light (and possibly a buzzer too in the future). Both our cars will have a walkie talkie on a specific channel and can signal before driving down the driveway.
Circuit Diagram:
Problem:
Well, I don't really know. It's sort of working, the light is just very weak compared to when I directly attach it to the 9v. I tried to measure the voltage but I guess I don't know how to use a voltmeter because the voltage was going down when I triggered the walkie talkie.
Anyway, I'll appreciate any help I can get. Thanks!
P.S. I have some other transistors and a small 12VDC 1A relay too....