Nature Trail Mapper in KML format with ESP32, RYS352A GPS Module and microSD card logging. Posted: May 6, 2025 | Last updated: May 6, 2025. Hi, I'm Bill.

It also has all of the I/O you would expect something based on an ESP32 to have, such as I2S stereo DAC, an I2S microphone input, I2C GPIO extenders and, of course, a built-in MicroSD card reader.