gonna be a LOT more difficult to trace down the HCI error code, because no enum types are provided: https://github.com/espressif/esp-idf/blob/23e4823f17a8349b5e03536ff7653e3e584c9351/components/bt/host/bluedroid/stack/hcic/hcicmds.c#L192 You'd have to modify the code to add an assert and backtrace t...

I am currently debugging an issue while trying to connect an ESP32 with a Meta Quest 3. The pairing is successful, but then is always terminated 3 seconds later. Setting the error log to verbose gives me: [ 41477][ I ][BluetoothSerial.cpp:609] esp_bt_gap_cb(): ESP_BT_GAP_ACL_DISCONN_CMPL_STAT_EVT A...

The S3 doesn't have input-only pins, so I think someone forgot to remove those texts. I'll file a ticket to get this fixed. Thanks for bringing this to our attention! Thanks for the clarification...but the docs still say "input only" in 2 places on this page (one shown here): Untitled.png https://d...

You cannot use the WiFiClientSecure library with anything else--it's internally bound to the WiFi module. However, you can use a wrapper library that utilizes the exact same mbedTLS functionality under the hood--and assign it to any device library that implements Client. I personally suggest https:/...

Just for those who might want to tinker with the brown-out detector on their own, here is my sloppy test code for the ESP32-S2. LIKELY WILL NEED CHANGED IF YOU ARE USING A DIFFERENT ESP32 VARIANT! #include <Arduino.h> #include "hal/brownout_hal.h" // for adjusting brownout level #include "soc/rtc_cn...

(5 farad 3.0v cap has an ESR of ~0.130R, whereas the 20 farad 3.0v cap has an ESR of ~0.050R.) Funny that a dedicated "5.5v 5F" ultracapacitor "module" costs 2-8x that of two discrete 2.7v 5F ultracaps though. Don't forget that 2x 5F, 0.13 Ohms in series is 2.5F, 0.26 Ohms. And you'd want to implem...

@ Another potential option: "5V" ultracap (2x 2.5V in series) hooked up directly to 3V3 It is worth thinking about two 2.7v/3.0v ultracaps in series...that is, on the 5v rail , not the 3.3v rail. As 2x 5F capacitors are about the same cost as 1x 20F capacitor, that would be a win on the BOM level (i...

Start up and set the BOD to, say, 3.0V; when the BOD triggers (interrupt), do your shutdown/cleanup routine, then set BOD to 3.3V to reset the chip and hold it there until power comes back. If only the brown-out peripheral worked that way, I'd be in tall cotton. It's how I hoped/expected it to work...

Another potential option: "5V" ultracap (2x 2.5V in series) hooked up directly to 3V3 That doesn't solve the problem of the ESP32 brown-out module being effectively useless. (Also worth noting that boost converter ICs are significantly cheaper than ultracaps: TPS61023 with true disconnect functiona...

I've got a similar project, thanks for the idea about enabling/disabling the converter. In my case I think I'm going to have to add an external reset button. 15F of super-capacitor decays very slowly after the ESP32 shuts down, maybe hours around 2 volts. It prevents a normal restart when the power...