IR Proximity Sensor - 16 Set
by TechMartian in Circuits > Soldering
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IR Proximity Sensor - 16 Set
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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!!!
BoM
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* IR Sensor Match Pair -- IR Emitter and Photodiode
* LM358 Comparator Op Amp
* LED
* Perf Board
* Wires
* 10k Potentiometer
Tools:
* Soldering Iron
* Solder
Solder IR Module
![IMG_2615.jpg](/proxy/?url=https://content.instructables.com/FI7/HXLY/J6WGO9FW/FI7HXLYJ6WGO9FW.jpg&filename=IMG_2615.jpg)
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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.
16x Controller Board
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![Screen Shot 2017-08-30 at 7.36.45 AM.png](/proxy/?url=https://content.instructables.com/F5C/R7LN/J6WGO9XI/F5CR7LNJ6WGO9XI.png&filename=Screen Shot 2017-08-30 at 7.36.45 AM.png)
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.
Done!
![IMG_2617.jpg](/proxy/?url=https://content.instructables.com/FNJ/R77U/J6WGO9GG/FNJR77UJ6WGO9GG.jpg&filename=IMG_2617.jpg)
![IMG_2619.jpg](/proxy/?url=https://content.instructables.com/FM7/VQ4X/J6WGO9GU/FM7VQ4XJ6WGO9GU.jpg&filename=IMG_2619.jpg)
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!