- Introduction to the physical layer: Microcontrollers vs. Microprocessors, and analyzing the ESP32 and NodeMCU boards.
- Hardware interfacing: General Purpose Input/Output (GPIO), Inter-Integrated Circuit (I2C), and Serial Peripheral Interface (SPI).
- Precision sensor ingestion: Sampling data from DHT22 (temperature/humidity), HC-SR04 (ultrasonic navigation), and analog soil moisture probes.
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