Beverageexpert
- Aug 23, 2011
- 1
- Joined
- Aug 23, 2011
- Messages
- 1
Hello I am a noob with analog circuits as I started learning with microcontrollers. I know this would be easy with a microcontroller but would like to have it more simple.
I have an infrared led and infrared phototransistor that I would mounting in a jar. Anytime somebody puts something in the jar I would like it to blink the led. I thought a pnp transistor would do the trick but it is not working. When I shine the infrared led on the phototransistor the led lights up. I want this to be reversed. Any suggestions?
Thanks
I have an infrared led and infrared phototransistor that I would mounting in a jar. Anytime somebody puts something in the jar I would like it to blink the led. I thought a pnp transistor would do the trick but it is not working. When I shine the infrared led on the phototransistor the led lights up. I want this to be reversed. Any suggestions?
Thanks