Arduino Multi-function Sensor Board

Expansion board with some sensors and interaction possibilities. The board has the following components: Temperature sensor DHT11/LM35 IR sensor Buzzer RGB LED LED – Blue/Red Pushbutton – 2 Free/Remaining Light sensor Potentiometer Various connections are also accessible. Facts Pin assignments: Function Pins Pushbutton 1 2 Pushbutton 2 3 DTH11 Temperature/Humidity Sensor 4 Buzzer 5 IR Receiver 6 …

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Arduino Multifunction Add-on Board

And another Arduino shield with something on it. This could be particularly interesting for beginners. A four-digit 7-segment display, 4 LEDs, a buzzer, a potentiometer, a few buttons – what more do you need? If you have too much money, you can also populate the APC220 port and flash via remote USB. How nice it is to have a new...

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Basics of Accelerometer

As the name suggests, acceleration sensors measure the acceleration of a body, for example a car. Modern sensors measure acceleration in all three dimensions (X, Y, Z, direction). The speed of a body can be calculated from the acceleration and thus, with limitations (prone to errors), a position can be determined. Uses: aircraft construction, drones and similar, navigation, automotive industry, smartphones, satellites. Functionality: The…

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Fundamentals of electronic compass

An electronic compass determines the direction of north, similar to a magnetic compass. Most electronic compasses do this not only in the X/Y direction but also three-dimensionally in the X/Z and Y/Z directions. Uses: Aircraft construction, drones and similar; Navigation; Automotive industry; Smartphones; Satellites. How it works: An electronic compass is also called a magnetometer. It is based on the Hall effect. When a current-carrying...

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Fundamentals of Electronic Gyroscopes

I wanted to understand what a gyroscope can do, what it does, and where it helps. Here are my collected findings. A traditional gyroscope measures an object's orientation in space, using a rotating „inertial“ mass. Modern electronic gyroscopes work on a different principle, for example, with two piezo elements. However, they fulfil the same purpose. Applications include aircraft construction, drones...

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GY-273/HMC5883L – Compass Module

The HMC5883L is a compass that can be controlled via the I2C bus. It is queried via the bus address 0x1E and can determine the orientation of an object on which it is mounted. View Data Basics Circuit Connection GND Ground DRDY ?? SDA I2C SDA SCL I2C SCL VCC 5 V Applications Direction finding Orientation of robot Extension …

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Arduino Chess Clock

Over lunch with colleagues, an idea struck me. The two of them play chess during their lunch break and to make things a bit more exciting, I suggested a chess clock. This is how the idea of creating a chess clock consisting of two displays for the respective time, two buttons to start and stop the time, and a…

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RC car with PS2 controller

A new kit from AliExpress has prompted me to build a remote-controlled vehicle. The kit consists of an Arduino, an expansion board, and a PS2 controller with receiver. Components The chassis of the vehicle is formed by a kit from AliExpress LINK. This kit contains an acrylic platform with two motors, wheels, and some accessories. For control, I am using...

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Funduino JOYSTICK V1.A

With this board, Funduino offers another RC remote control module. The board features a joystick, various buttons, and connection options for external boards, such as for an RF module, a Nokia display, and a Bluetooth module. Additionally, the board can be operated with 3V and 5V. Intended uses: With an RF module as a remote control for vehicles, with a display as...

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Sunfounder nRF24 Remote Control

The Sunfounder remote control is powered using an Arduino Nano and an nRF24101 board. It has screw terminals for power, a power switch, and two slots for the aforementioned modules. For control, it uses a two-axis joystick, similar to those found in PS4 controllers. The joystick is analogue. Two potentiometers (variable resistors) …

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