Hello
I need IR sensor circuit with micro Atiny , able sence up to 5Meters object ,output a relay
Thanks

 

able sence up to 5Meters object

Good luck meeting this specification.

 

Here are the TX and RX circuits that I use. The receiver in my version has 2 IR sensors (TSOP4838) spaced about 60 mm apart so that it does not get triggered by insects breaking the beam. It needs something large enough to break both beams. I find it easier to get long range using sensors designed for remote control than photo diodes or photo transistors as the the deal better with ambient light. I also have the sensors mounted at the end of a short length of (Black on the inside to reduce reflections.) so that the sensors have quite a narrow field of view.
The receiver section can be simpified if only one beam is required. The receiver output is only from a cmos IC so you would have to add your own relay driver. (For a small relay you could use the existing LED driver.)
Transmitter schematic.

Receiver schematic.
If this suits your needs I can post details of the bit pattern that is acceptable to the TSOP4838 sensors and the code for an ATtiny13 to produce this pattern.
Is this for homework or a school project ?

Les.

 

Here are the TX and RX circuits that I use. The receiver in my version has 2 IR sensors (TSOP4838) spaced about 60 mm apart so that it does not get triggered by insects breaking the beam. It needs something large enough to break both beams. I find it easier to get long range using sensors designed for remote control than photo diodes or photo transistors as the the deal better with ambient light. I also have the sensors mounted at the end of a short length of (Black on the inside to reduce reflections.) so that the sensors have quite a narrow field of view.
The receiver section can be simpified if only one beam is required. The receiver output is only from a cmos IC so you would have to add your own relay driver. (For a small relay you could use the existing LED driver.)
Transmitter schematic.
View attachment 307673
Receiver schematic.
View attachment 307674If this suits your needs I can post details of the bit pattern that is acceptable to the TSOP4838 sensors and the code for an ATtiny13 to produce this pattern.
Is this for homework or a school project ?

Les.

Thanks,
I will test this great circuit,
Thanks

 

Here are the TX and RX circuits that I use. The receiver in my version has 2 IR sensors (TSOP4838) spaced about 60 mm apart so that it does not get triggered by insects breaking the beam. It needs something large enough to break both beams. I find it easier to get long range using sensors designed for remote control than photo diodes or photo transistors as the the deal better with ambient light. I also have the sensors mounted at the end of a short length of (Black on the inside to reduce reflections.) so that the sensors have quite a narrow field of view.
The receiver section can be simpified if only one beam is required. The receiver output is only from a cmos IC so you would have to add your own relay driver. (For a small relay you could use the existing LED driver.)
Transmitter schematic.
View attachment 307673
Receiver schematic.
View attachment 307674If this suits your needs I can post details of the bit pattern that is acceptable to the TSOP4838 sensors and the code for an ATtiny13 to produce this pattern.
Is this for homework or a school project ?

Les.

I will use this circuit to detect the objects on the conveyor.
Thanks for more details