I was gonna say the arduino.cc site but that works too. Source: 11 months ago

When you write your code and compile it, what environment are you doing it in? Are you using an online cloud service like arduino.cc's IoT cloud? Or have you downloaded and installed the Arduino IDE application from arduino.cc's software download page? Source: 11 months ago

There are tons of libraries for the Arduino platform that people have written and there are many available for use with this module, so you don't have to do any super heavy lifting programming-wise. In the Arduino IDE you can download from arduino.cc I installed a couple of libraries just now as a test. The reason I installed them is because almost every library comes with several short example programs showing... Source: 11 months ago

Did all of it make sense? Could you do the projects he shows by yourself without starting and stopping the video? That might show areas that you would want to brush up on. Another great idea is to go through all of the commands on the arduino.cc language reference page. Make sure you instinctively understand what each function listed does and experiment with any that you aren't familiar with. Source: 12 months ago

There are also IoT cloud style dashboards at places like arduino.cc that let you add various widgets for dials and controls to represent the data you have locally with your Arduino. Source: 12 months ago

Esp32.net has a bunch of additional references, projects, and places to gather information. Source: almost 3 years ago

Closest thing is the ESP32 from Espressif Systems See ESP32 link for details. Since you specifically asked for open source, so some tinkering and compile is required. Source: about 3 years ago

There's also many more dev boards, chips and modules listed here, though they may not necessarily have platformio IDs. Source: about 3 years ago