IR signal detector ring

Using Arduino Project Guidance
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Please excuse any lack of knowledge, I'm pretty new to this.

As a part of a larger project, I'm creating this component that can discern the direction an IR signal is originating from and possible the strength of the signal. I've decided to approach this by positioning 32 IR detectors in a ring around the outside of a circular breadboard. The individual IR detectors are TSOP6240 IR receivers from Vishay.

What I'm planning to do is to record the direction that each IR receiver is facing, and by checking to see which IR receivers are actually receiving the signal, the direction that the IR signal is originating from can be discerned. Imagine three IR receivers that are next to each other are receiving the signal, then that means the direction the center IR receiver is facing relative to the designated direction of the component is the direction the signal is originating from. If it is two receivers, then the angle value between the two angle values of the receivers is a rough direction it is originating from.

I also plan on doing all the processing on a standalone atmega 2560 and then output it through UART for use by another microcontroller. I've already designed a schematic based on other forum posts about standalone atmega 2560 projects.

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I plan on using my Atmel AVR ISP MKII to burn the bootloader and code into the component through ICSP.

Is there anything I'm missing for the standalone mega or any issues with this way of proceeding with my project?

1 Like
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It would be a good idea to test the idea on a breadboard before designing a custom circuit. For example, the detectors you have chosen can't measure or report signal strength.

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Should that be TSOP6240?

You are looking for a 40KHz remote signal?

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Oops, might have made a slight typo there. Yes I'm using the TSOP6240.

And yes, the carrier frequency is 40KHz.

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You make a good point. I've bought two different versions of it, with one guaranteed to be able to detect the signal. The TSOP 6240 was the one that I'm not sure about, but since its an SMD I would need a way to mount it, which means I'll need a pcb anyways. I will take your advice and try my best to test them.

As a side note, is there anything on my custom circuit that you notice is wrong/could be done better?

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That is simply not possible, so you must be misinterpreting the manufacturer's specifications. Which, incidentally, constitute a legal document.

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As part of the competition the rules state that the source must be detectable by the TSOP 31140.

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