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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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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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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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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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Bicycle speedometer with ESP12 – update
I started coding for my Bicycle speedometer with ESP12. The idea of the code is to light a single LED…
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Bicycle odometer project – update 2
A quick update on the bicycle odometer project, to show you that I have finished the schematic and done a tentative PCB design
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SHT21 temperature sensor ESP32-S2
We will learn how to interface the SHT21 temperature sensor with ESP32-S2, via i2c protocol
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