Look here: https://github.com/kriswiner/ESP32/tree/master/PWM

Thanks for the reply and sorry about posting in the news forum. I meant to post in the general and couldn't change after posting.

I use a 27 kOhm + 100 kOhm voltage divider to bring the 4.2 V maximum of a single cell LiPo battery down to 3.3 V, which is the reference voltage (AFAIK) of the ESP32 board I am using. I have the voltage divider connected to pin 34, and I read the pin as follows: float VBAT = (127.0f/100.0f) * 3.30f...

Yes. The 4 MBytes (~3 Mbytes of space available to the user) on the board I am using is likely enough for casual use. I wanted to be able to add more. I have a couple of add-ons I designed for a Teensy with either 16 Mbyte or 128 Mbyte. There is even an SPI NOR Flash with 256 MByte available I have ...

I have heard, or maybe just gottent the impression from forum posts, that there is an impending change to the ESP32 due for the first part of next year. I have about 100 ESP32 that I bought last month and they work just fine for me so far with the Arduino IDE such as it is. I am wondering if I shoul...

Thank you for the detailed reply; this is all great news! On the subject of light sleep, this is what I had to do for the ESP8285: #include "gpio.h" extern "C" { #include "user_interface.h" bool wifi_set_sleep_type(sleep_type_t); sleep_type_t wifi_get_sleep_type(void); } which allows me to call this...

I verified that I could read a Spansion S25FL127 128 Mbit NOR flash using either SPI port, the VSPI port on pins 18, 19, 23 (ss = 5) and the HSPI port on pins 12, 13, 14 (ss = 15). I am pretty sure any GPIO can be the chip select but I didn't try any others. I didn't see any timing differences betwe...

how a production product would look like This depends a lot on the application. For starters there will be constraints on board size and shape. If you want to add battery charging and sensing as well as sensors on the board then placement is a matter of design choice for the most part. Everyone's c...

Now that I have my ESP32 Dev Board working (thank you Igrr) and I am able to make use of the I2C bus (thank you me-no-dev) I just want to ask about my wish list of some useful features: Does the ESP32 support a Real Time Clock? I have a 32.768 kHz crystal on my board and would like to keep time on t...

I have been working to test the ESP32 (with a lot of help from the Arduino core team!) and I have tested a variety of I2C sensors. A repository of Arduino sketches for these sensors (MPU9250, BME280, MS5637, VEML6040, BNO055) as well as sketches that make use of the other ESP peripherals known to wo...