For others that may be attempting the same thing. Perhaps including the following TI chip in the design to act as a dynamic NFC tag on one ESP32 device to send a random OOB BLE pairing code

https://www.ti.com/lit/wp/sloy004/sloy004.pdf?ts=1643081701546&ref_url=https%253A%252F%252Fwww.google.com ...

I would like to add NFC OOB BLE pairing between two custom ESP32 boards.

I do appreciate the fact that alternative ways exist to pair BLE but I am attempting to be interoperable with an existing solution that is already using BLE+NFC OOB tap pairing.

I believe I can add an RC522 to serve as the ...

Potentially, you could mess with the duty cycle of the carrier signal. Lower duty cycle = lower power = less range.


Thanks for your reply. Perhaps you are correct and the Range is duty cycle which I could easily manipulate from the SW interface in 10% increments.

This just leaves me trying to ...

Thanks for the reply.

I was hopeful that I found a setting that would accomplish what I was after. You are correct, it does not do what I thought it did.

If any others have some advice on how to get great control over the emitter power level, I am all ears.

Thanks

I am using the RMT library to send IR signals for the MileTag2 protocol.

The MilesTag 2 IR protocol is a series of pulses of this carrier wave beginning
with a 2400 microsecond (µS) long pulse. This is followed by a series of pulses
either 1200µS or 600µS in length, representing 1 and 0 ...

I am attempting to use the internal ESP32 DAC for 8bit mono audio output.


The PAM8403 seems like overkill (stereo output) and it is much larger than the PAM8945. However, I can't seem to find any schematic examples of a PAM8945 anywhere on the internet other than the datasheet example.
https ...

I am using an ESP32 to build a toy project. The toy has a shooting sound activated by a button/trigger (GPIO input).
I am using this library and examples for some test code to see if I can get the performance or responsiveness I am looking for with the sound effects over I2S:
https://github.com ...

Awesome, thanks for the reply.

Just for clarification, the objective isn't to do a TOA calculation. It is just to determine which quadrant received a properly encoded lens focused IR signal which direction in turn indicates direction. The master just needs to know which sensor was hit by which ...

I am thinking of using some ATTiny84's as I2C slaves for a series of sensor clusters with the ESP32 as the master. Part of those clusters include an IR Rx TSOP. The reason I am thinking of using the ATtiny and I2C is to simplify the cabling between sensors and also make them expandable to allow me ...

Thanks so much for your response. I figured it out "sorta" right after my post. The problem was that my ring buffer size was set to "1000" so every time I saw the parameter value of "1000" in the xRingbufferReceive command I was making a bad assumption that the "1000" parameter was buffer size . In ...