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Category Archives: ESP32
ESP32 Arduino: Temperature, humidity and CO2 concentration web server
In this ESP32 tutorial we will check how to develop a HTTP web server that will expose an API for clients to retrieve measurements of temperature, humidity and CO2, using a CO2 sensor and a DHT22 temperature and humidity sensor. The … Continue reading
Posted in ESP32
Tagged Arduino, CO2 sensor, DHT22, ESP32, HTTP server, Humidity, Internet of Things, IoT, NDIR, Temperature
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ESP32 Arduino: Using an infrared CO2 sensor
In this ESP32 tutorial, we will check how to get measurements from a C02 sensor, using the Arduino core. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Posted in ESP32
Tagged ADC, Analog Read, Arduino, CO2 sensor, ESP-WROOM-32, ESP32, FireBeetle ESP32, Sensor
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ESP32 Arduino Bluetooth Classic: Controlling a relay remotely
In this tutorial we will check how to control a relay remotely using serial communication over Bluetooth Classic. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board and a DFRobot relay board.
Posted in ESP32
Tagged Arduino, Bluetooth, Bluetooth classic, ESP32, Internet of Things, IoT, Relay, RFCOMM, Serial, Serial over Bluetooth, SPP
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ESP32 Arduino: DHT22 Minimum Sampling Period
In this tutorial we will check how to get the minimum sampling period of the DHT22 and how to use it to make some temperature measurements without crossing the maximum sampling rate. To facilitate the interaction with the sensor, I’m using … Continue reading
Posted in ESP32
Tagged AM2302, Arduino, DHT22, ESP32, Internet of Things, IoT, sampling, Temperature sensor
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ESP32 Arduino: Getting humidity measurements from a DHT22 sensor
In this tutorial, we will check how we can get humidity measurements from a DHT22 sensor, with the Arduino core running on the ESP32. To make the interaction with the sensor easier, I’m using a DFRobot DHT22 module which has all the additional … Continue reading
ESP32 Arduino: Getting temperature from a DHT22 sensor
In this ESP32 tutorial, we will check how to get temperature measurements on the Arduino core running on the ESP32, using a DHT22 temperature and humidity sensor. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board.
Posted in ESP32
Tagged AM2302, Arduino, DHT22, ESP32, Internet of Things, IoT, Temperature, Temperature sensor
3 Comments
ESP32 Arduino: Encryption using AES-128 in ECB mode
In this tutorial, we are going to check how to use AES-128 in ECB mode, using the Arduino core running on the ESP32 and the mbed TLS library. The tests were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board.
Posted in ESP32
Tagged Advances Encryption Standard, AES, Arduino, ECB mode, Electronic Code Book, ESP32, mbed TLS
5 Comments
