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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Using Hall sensors, encoders, or odometry, the revolutions of motor shafts can be counted. The fineness of the count depends on the resolution. I once looked at one of these motors with a Hall sensor, and the results are summarised here. Facts My motor has 6 connections. Two for the motor's 9V supply voltage and 4 for...
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I purchased a robot chassis for €89 (this time directly from Amazon). This chassis has three omnidirectional wheels. In this report, I will show the assembly and mention a few facts. The use of the chassis will follow in later reports. (The manufacturer provides an assembly video, which I have linked below.) Facts Components Stable platform made of...
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A USB socket for the Arduino.
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Yet another mystery of an add-on board. Although there are many pages selling this board, I've only found exactly one video and one test example, which has never happened to me before. The board has 4 relays that can be controlled via pins 4-7. According to Reichelt, the relays can handle up to 240V…
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With the help of this add-on board, the Arduino can communicate via Wi-Fi. The board has an ESP8266 microcontroller on board, which can handle the network communication. Upon delivery, the ESP should have firmware from AI Thinker installed. How to find this out and much more I have summarised so compactly in this post. On the web…
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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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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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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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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 …
Continue reading "GY-273/HMC5883L – Kompassmodul"