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Series4 chapters70 min total

ESP32 from scratch

Four chapters from an unopened board to a sensor reporting over Wi-Fi. No prior embedded experience assumed.

Most ESP32 tutorials start at step four. They assume the toolchain is installed, the board already enumerates, and "just add your credentials" is a complete instruction. This series does not.

Each chapter ends with something that works and can be checked. If a chapter's last step does not do what it says, stop there — the next one will not fix it.

Chapters

  1. 01 · 15 minInstall the toolchainPlaceholderArduino IDE or PlatformIO, the ESP32 board package, and the USB driver your laptop is probably missing.
  2. 02 · 15 minFlash the boardPlaceholderGet Blink onto the board, and learn what to do when the upload fails — which the first time, it usually does.
  3. 03 · 20 minConnect to Wi-FiPlaceholderJoin a network, survive a reboot, and stop hard-coding your password into a file you will later push to GitHub.
  4. 04 · 20 minRead a sensorPlaceholderWire a DHT22, read it reliably, and send the numbers somewhere you can see them.

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