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Blinking commemorative keychain
Let me show you how I made a blinking commemorative keychain, made of PCB and a simple oscillator circuit (3 components)
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Currency converter display with ESP32
The idea is to create a currency converter display with ESP32, showing live conversion data in a OLED display with ESP32 and Arduino code
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MQTT protocol with ESP32 and Adafruit.io
Today I am implementing and testing the MQTT protocol with ESP32 and Adafruit.io, an effective way of sending data to the internet
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APDS9900 cellphone presence sensor
Let’s learn how to use the APDS9900 cellphone presence sensor, a light and presence sensor by Broadcom for cellphones
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Electronic dice with Raspberry Pi Pico 2
I’m implementing a full electronic dice with Raspberry Pi Pico 2, using the random() function of the Arduino IDE and LEDs
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Using a LDR light level sensor
Let’s get using a LDR light level sensor to sense the amount of light in the environment around. I am using a Raspberry Pi Pico 2
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HTU21D temperature sensor with ESP32
We are going to implement code for using the HTU21D temperature sensor with ESP32. This is an i2c temperature and humidity sensor.
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LM35 temperature sensor with ESP32
Let’s dive in and learn how to use the LM35 temperature sensor with ESP32, using a single analog input and a bit of simple code.
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Ultrasonic distance sensor HC-SR04 with ESP32
Today we are going to talk about the ultrasonic distance sensor HC-SR04 with ESP32, a neat little sensor used to measure distances
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Analog input readings with ESP32
You can have analog input readings with ESP32, the code is simple and requires a single configuration, “analogReadResolution”. Let’s code!
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GY-50 L3G4200D gyroscope with ESP32
We will learn how to use the GY-50 L3G4200D gyroscope with ESP32, a component made by ST semiconductor to measure angular velocity
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Project: time and temperature e-paper display
Today we are buiding a time and temperature e-paper display, based on a NTC thermistor and the DS1307 RTC chip, displaying on e-paper
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2.9″ E-paper display from WeAct
Let’s learn how to use the 2.9″ E-paper display from WeAct, an epaper display with which you can do a lot of cool stuff
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Getting started with Raspberry Pi Pico 2
This article is about getting started with Raspberry Pi Pico 2, the new foundation’s silicon and circuit board
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Minimalist USB thermometer with ESP32 – update 1
This is an update on the “minimalist USB thermometer with ESP32” project of mine. I have decided on the sensor and sent the pcb for fab
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What is PWM and how to use it?
Let’s dive into the content and get to know what is PWM and how to use it, using a ESP32-C6 as the controller to study it
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Laser distance sensor VL53L0x time-of-flight
Let’s dive into and get twot know the time-of-flight Laser distance sensor VL53L0x from ST semiconductors, with the WiFi chip ESP32-C6
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Minimalist USB thermometer with ESP32 – the idea
I am starting the project of a minimalist USB thermometer with ESP32, based on the Xiao ESP32-C6 WiFi chip. The sensor is connected via i2c.
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7 segment LED display with ESP32-C6
Let’s learn how to use a 7 segment LED display with ESP32-C6 and Arduino IDE. It is a matter of 8 resistors and a bit of code
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Remote control RC car project – the beginning
I am just starting a Remote control RC car project, a complete radio controlled controller + control board from scratch, come with me