This is a DIY IR proximity sensor with 16 sets of IR Inputs. A common application of this is detecting black and white colours for line following robots or even for things like haunted houses where if a person gets too close an object it'll trigger something to popup.
With this circuit, you can interface 16 different and independent IR sensors onto the board each triggering a new action!!!
Step 1: BoM
* IR Sensor Match Pair -- IR Emitter and Photodiode
* LM358 Comparator Op Amp
* Perf Board
* 10k Potentiometer
* Soldering Iron
Step 2: Solder IR Module
Follow the schematic diagram on the connections that will be soldered.
* Place the components through the perf board and tape them
* Solder them in space.
* Snip the excess wires
* Solder the bridged and jumper connections.
You will need 16 of these modules.
Step 3: 16x Controller Board
There will be 16 IR modules so we need two rows of 16 header pins.
* Solder the header pins onto the perf board.
These IR modules will be compared to each other in the case of black / white detection of 16 objects which is the application I designed for.
* Solder the electronic components in place - potentiometer, IC socket, and LED
* Solder all these 16 header pins in parallel to the Op Amp as shown in the schematic (but extended to 16 in parallel)
* Solder a long wire parallel to the anode of the LED which will give the input to nay micro controller and report the result.
Step 4: Done!
This is a rather tedious circuit that took hours to make.
I hope you enjoyed it! I'd like to see what applications you make with this circuit!