Hey guys,

Any idea how i should connect that phototransistor ?
I bought that one because i thought real phototransistors always come in 3 pins. Now i know i should have bought the black led with 2 pins.

 

Part number?

 

Does it have any identification on it?
It looks like the ones specifically for IR remote controls, decoding a pulsed carrier wave into a logic level square wave.
Like this one: https://create.arduino.cc/projecthu...using-tsop-or-ir-receiver-with-arduino-cff436

 

There are at least 3 different pin connections with nothing common, & many output configurations. Back to post #2.

 

Thanks guys. Problem solved. I asked the salesman. This component is used for remote controls

 

Looking at the image of the photo transistor on the board, it looks like all the pins are shorted together on #45? Maybe it's just me?

Ron

 

I placed the item on every possible position. The salesmen dont know much about photodioded and phototransistors. None was able to orientate me correctly

 

Typically black is emitter and clear receiver on IR diodes. Terminology gets a bit mixed up on the receive end, some say diode, some say phototransistor. Can't remember coming across a 3 legged one but see some IR emitters with 3 legs on Amazon. YMMV

 

If you rotate it 90 degrees on the bread board it will be correct. The fact it has three leads makes me think it has a base connection. Using an Ohmmeter you can likely figure out the pin out arrangement.

Ron

 

Looks like a Dqir-38313h9 IR receiver..

 

Looks like a Dqir-38313h9 IR receiver..

View attachment 209627

Ir receiver yes. Any idea what that thing could be used for ?

 

It's the thing you point your remote control at.