ESP32 Using Arduino Cloud
The code for the ESP32 using the DHT11, DHT20, or DHT22 is identical to the Arduino example in the previous chapter. You just need to modify the connected…
Photoresistor Sensor
A photoresistor (also known as a light-dependent resistor or LDR) is a type of resistor whose resistance decreases as the intensity of light hitting the device increases. It…
Voltage Divider Circuit
Voltage Divider Explanation A voltage divider is a simple circuit made of two resistors connected in series. It is used to scale down a voltage to a desired…
Project – Smart Sunrise Alarm
In this project, we’re going to design a smart sunrise alarm that uses a light-dependent resistor (LDR) and an active buzzer. This clever alarm will detect the first…
LED Control Panel
We have learned how to display dynamic information using a Web Server. In this project, we will take it a step further by enabling interaction with the user…
MultiWiFi
MultiWifi is a feature or technique used to allow the ESP32 to connect to multiple Wi-Fi networks. The idea is that the device can automatically switch between available…
NTC Temperature Sensor
An NTC (Negative Temperature Coefficient) sensor is a type of temperature sensor whose resistance decreases as the temperature increases. This behavior is the opposite of a PTC (Positive…
Project – Temperature Measurement
To use an NTC thermistor with the ESP32, you need to connect it in a voltage divider configuration. Here’s how you can do it: Components Needed: Circuit Connections:…
Project – IoT Real-Time Dashboard
In this project, we’ll build an IoT project that display real-time temperature and humidity data from the DHT22 sensor using an ESP32. The ESP32 is ideal for this…