Thank you for your reply ESP_Sprite.

I did find a solution that worked for one of the boards using esptool.py.

This is a good tutorial that worked for me:
https://randomnerdtutorials.com/esp32-erase-flash-memory/

Unfortunately, it did not work for the older board with a rechargeable battery ...

Good question ESP_Sprite.

For the first one I did disconnect the LCD so that nothing was connected and I still could not download any program.

For this latest second board, I was programming test program that used the LCD and I did this many times with no issues.

It wasn't until my first download ...

My ESP32 is constantly outputting the following out the serial port:
rst:0x10 (RTCWDT_RTC_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371
ets Jun 8 2016 00:22:57

And now when I try to download code to it I get:
Sketch uses 732305 bytes (55%) of program storage space ...

I have an EmonCMS running on my Raspberry Pi on my local network which collects data from various sensors based on the ESP processors. The EmonCMS allows me to store and display the data in many ways.

I can retrieve data for id=1 using a web browser:

http://192.168.11.235/feed/value.json?id=1 ...

Hi, I have googled this with no luck. I keep getting info related to battery or low power operation which is not why I want to do this.
So, I think that the ADC results can be affected by the RF energy of the WiFi radio.
If that is true then would it make sense to disable the radio before using the ...