Hello! I just launched a product using the esp32 as the controller in an AC load management system. You can take a look at it at https://op.solar I'm using it to divert solar energy to our electric hot water heater if we are net generating. It can be used to control any resistive AC load from 100-25...

Following. I've switched to an i2c adc due to the issues with the esp32 adc. Would love to switch back to using the esp32 adc if the calibration brings the accuracy and error down to a reasonable level.

Hi @kt819gm.

Have you made any progress here? I've been looking forward to ESP32 ADC calibrations being in place for some time now, how can we tell which modules have been calibrated vs. not? It that a chip issue, are these older chips prior to the calibration being put in place?

Chris

ESP_Angus is right. Almost all FTDI chips can only supply 50mA, so when the WiFi goes live the BROWN OUT happens. On the FTDI there is usually a voltage select jumper 3.3V/5V. I piggy backed a LM1117-3.3 and tied the center pin to the LM1117 output (no more jumper) and brownouts stop since the 1117...

Answering my own problem, I found that the difference between the USB->UARTs was how they handled a block of characters sent in sequence (so probably something related to buffering in them). My advice to others would be to loop back TX to RX and then compare what esptool was was trying to send, to ...

Hi @perryc. I'm using this code here and was running into cases where the pinging was taking forever to timeout or complete. The delay and timeout values are in seconds, see esp_ping_set_target(): case PING_TARGET_RCV_TIMEO: ESP_PING_CHECK_OPTLEN(opt_len, uint32_t); ping_option_info->ping_rcv_timeou...

Note that cJSON printing reallocates memory as it appends values to the string. If the issue was somewhere else in the system cJSON’s print does a ton of calls that result in heap checking. Not saying it isn’t an issue in cJSON but they run their unit tests under valgrind I think so I’m surprised we...

Hi Esp_Angus. Btw, how does one mention a username to let them see a post? Or is that not possible? I’ll try tomorrow with the updated cJSON. It is the same threading approach, the cJSON calls are from the web server thread. In the Linux version I’m lacking the console thread, some temperature retri...

ESP_Angus, are you still looking for a test build that results in the problem? Would you need source as well? If so I can look to do a build that disables required hardware and try to reproduce.

Thank you again ESP_Angus for helping out here and in my thread. I didn't see the forum notification email for some reason and just spotted your response over on my thread a few minutes ago. Maybe with two of us now we'll figure out if this is a cJSON issue or something else entirely. Since my last ...