Not sure about compressing on esp32 and decompressing elsewhere but this works for me to compress on my linux host (and then i decompress on the esp32) python -c "import zlib; import sys; open(sys.argv[2], 'wb').write(zlib.compress(open(sys.argv[1], 'rb').read(), 9))" uncompress_file.bin compressed_...

I noticed ESP Privilege Separation project on github https://github.com/espressif/esp-privilege-separation which is very interesting. Unfortunately it is in beta and does not seem to support recent idf releases such as v5.1.1, it requires idf patches and looking at the example sdkconfig.defaults htt...

I have an intercom that is based on a two wire system with DC 28 V It's an elvox duefili. With an esp32 + adc and a voltage divider I was able to sample the voltage. upon ringing the doorbell and opening the gate I can see the different voltage drop. I can also "see" my voice on a plot of the sample...

For ble ota I'm not sure if there is any example is esp idf but you can find an ota mechanism that supports both serial and ble in https://github.com/blockstream/jade - it wraps the ota data in cbor messages It uses by default deflate compression via minix in the rom but you can skip that (it works ...

The former is the branch the latter is the tag.
For production use you want the tag generally as the branch is a moving target.

The m5 atom echo comes with a PDM mic SPM1423 and speaker NS4168 i2s From https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/i2s.html Each controller can operate in half-duplex communication mode. Thus, the two controllers can be combined to establish full-duplex c...

thank you, very informative and useful

interesting. how do you check what's the used stack in a task?