En esta entrada https://micro57.wordpress.com/2020/04/11/la-hora-en-arduino-con-servidor-ntp te mostré como conectarse a un servidor NTP por medio del protocolo UDP ...

A Proof Of Concept attempt to get accurate(ish) time from an NTP server. The result gives the time within +-10 milliseconds of the time as referenced to the DCF77 time signal from Frankfurt, Germany.

Making a microcontroller perform as a frequency counter is a relatively straightforward task involving the measurement of the time period during which a number of pulses are counted. The maximum ...

I made this project with a small MP3 shield in 2018. Those who are interested in voice manipulation with Arduino or ESP32 , for them this ... The MP3 shield that has come from aliexpess for for a mere ...