A site about programming, IoT and technology. Find tutorials for many different projects.
In this tutorial we will check how to interact with a PIR motion sensor using an interrupt based approach, using the Arduino core running on the ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board, and a DFRobot’s PIR sensor module. Introduction In this tutorial we will check how to interact with …
Continue reading "ESP32 Arduino: PIR motion sensor and interrupts"
In this tutorial we will check how to use a PIR sensor to detect motion, using an ESP32 and the Arduino core. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board, and a DFRobot's PIR sensor module. Introduction In this tutorial we will check how to use a PIR sensor to detect …
In this tutorial we will check how to setup a simple Flask server on the Raspberry Pi and send HTTP POST requests to it from the ESP32. Then, we will access the body of the request on the Raspberry Pi. The Python version used on this tutorial was 3.5.3 and it was tested on a Raspberry Pi …
Continue reading "Raspberry Pi 3 Flask: Receiving HTTP POST Request from ESP32"
In this tutorial we will check how to setup a very simple Flask server on the Raspberry Pi and send HTTP GET requests to it from an ESP32 running the Arduino core. This tutorial was tested on a Raspberry Pi 3 model B+, running version 4.9 of Raspbian, and on a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this …
Continue reading "Raspberry Pi Flask: Receiving HTTP GET Request from ESP32"
In this tutorial we will check how to perform string interpolation in Espruino running on the ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we will check how to perform string interpolation in Espruino running on the ESP32. It's important to mention that string interpolation is a …
Continue reading "ESP32 JavaScript Espruino: String interpolation"
In this tutorial we will analyze how to use the C++ conditional operator, also known as the ternary operator, on the Arduino core running both on the ESP32 and on the ESP8266. The tests on the ESP32 were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. The tests on the ESP8266 were performed on a DFRobot’s ESP8266 …
Continue reading "ESP32 / ESP8266 Arduino: Conditional operator"
In this guide, we will check how to use the bitwise AND operator on the Arduino core, running on the ESP32 and on the ESP8266. The tests on the ESP32 were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. The tests on the ESP8266 were performed on a DFRobot’s ESP8266 FireBeetle board. Introduction In this guide, we will …
Continue reading "ESP32 / ESP8266 Arduino: Bitwise AND operator"
In this tutorial we will check how to add properties to a previously created object using Espruino on the ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we will check how to add properties to a previously created object using Espruino on the ESP32.  Recall that Espruino is a JavaScript interpreter, so we can use many of the language features on our ESP32.  …
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In this tutorial we will check how to get temperature and humidity measurements from a DHT22 sensor using Espruino, running on the ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we will check how to get temperature and humidity measurements from a DHT22 sensor using Espruino, …
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In this tutorial we will check how to use some ESP32 specific functionalities on Espruino. We will analyze how to obtain the SDK version, the number of free bytes available on the heap and how to perform a software reset on the device. The tests from this tutorial were performed using a DFRobot’s ESP32 module integrated in a ESP32 …
Continue reading "ESP32 Espruino: Get SDK version, free heap and software reset"
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