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Project List

Project List

This section takes you from your first cloud-connected sensor to clear, production-minded device patterns through a practical learning sequence. Every project includes objectives, parts, a wiring table, PxServ keys, complete firmware examples, a test procedure, and troubleshooting notes.

01→

Beginner · 10 Projects

Build your base with GPIO, basic sensors, setData(), and getData().
02→

Intermediate · 10 Projects

Move to multi-task loops, remote commands, calibration, and alarms.

03→

Advanced · 5 Projects

Practice safe states, hysteresis, richer telemetry, maps, and OTA flows.

One path across all project levels

The sequence is intentionally balanced: 10 beginner, 10 intermediate, and 5 advanced projects. You can follow end-to-end or jump directly to the level that matches your current needs.

Common development board

Examples target an ESP32 DevKit V1 in Arduino IDE. PxServ also supports ESP8266, but pin names, ADC ranges, and peripheral APIs must be adapted.

One-time setup

  1. Create a PxServ project and copy its project API key.
  2. Install the ESP32 board package in Arduino IDE.
  3. Install PxServ 1.3.0 or newer through Library Manager.
  4. Replace WIFI_SSID, WIFI_PASSWORD, and PXSERV_API_KEY in each sketch.
  5. Select your exact ESP32 board and serial port.

Never publish your API key. In a real product, keep credentials in a separate configuration file excluded from version control.

Electrical safety

  • ESP32 GPIO uses 3.3 V logic; never apply a 5 V signal directly.
  • Level-shift 5 V outputs such as HC-SR04 ECHO before connecting them to ESP32.
  • Power pumps, motors, and servos from a suitable external supply and share GND.
  • Relay examples are for safe, low-voltage DC loads only. Do not work with mains voltage.
  • Confirm your module’s pinout and voltage limits in its manufacturer documentation.

PxServ key model

PxServ sends values as strings. Keys use only a short project prefix—such as buzzer/command, greenhouse/temperature, or gps/status—without a skill-level prefix.

client.setData("temperature-humidity/temperature", String(temperature, 1));

The series is based on the official PxServ Arduino source , the Arduino language reference , Arduino-ESP32 documentation , and the sensor references linked in each project.

Start with Cloud Hello.

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