(Title image: yellowcloud from Germany – EPROMs 4M, 2M, 256k, 16kbit) First off, this is a living page, I will add, correct, or remove things here from time to time if they are incorrect. Therefore, no guarantee of accuracy (please check data sheets). Nevertheless, I will endeavour to not lie in my writing and avoid half-truths. Where I am not sure, it will say…
Continue reading "Retro – (L/E)EPROM Hardware"
Built an oversized joystick tester.
Continue reading "JOY-Stick Tester für Amiga/Commodore"
The INA219 measures the current of a consumer and can be read out via I2C bus. I connected it to an ESP32 and tried to get some data from it.
Continue reading "I²C Strom Sensor Board INA219"
For another project, I needed relays to be able to switch a couple of pumps. This is where the ES32 boards caught my eye on AliExpress. They come completely ready to use and some even have a 240V power supply on board. CAUTION: Although the programming port on the boards is marked as 5V, the fact that my boards…
Continue reading "ESP32 Relay Board"
Connector most commonly used for power supply in model making
Continue reading "XT Steckverbinder"
Hier soll kurz beschrieben werden ein Publisher (Nachrichten Erzeuger) und ein Subscriber (Nachrichten Abbonent) in C++ erstellt werden. Für eine ausführliche Anleitung sei auf die offizelle Website verwiesen. http://wiki.ros.org/ROS/Tutorials/WritingPublisherSubscriber%28c%2B%2B%29 Voraussetzung Ihr benötigt einen Workspace und ein Paket, in meinem Fall is das Workspace test_ws und Paket beginner_tutorial. Weiterhin könnten auch helfen: Vorbereitung Ins Paket Verzeichnis …
Continue reading "ROS: Einfachen Publisher/Subscriber in C++ Erstellen"
Every node can offer services. A service is characterised by a request followed by a reply. Services are used to call specific functions on nodes. For example, to query a state or perform a reset. The initiative here comes from the requester. This differs from messages that are subscribed to. How...
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For the exchange of data between different nodes, messages are required. These are defined in .msg files and then generated using catkin. The result is a .h file with C-code and the same name. Each node can then subscribe to these messages. The messages are automatically sent out by the sending node and all subscribers receive them. This differs...
Continue reading "ROS: Nachrichten Erstellen"
I started looking into ROS, and at some point, you come across information that you can simulate the behaviour even without a physical robot. After reading a bit more into the matter, I found myself with tons of tutorials that I couldn't try out with the information provided there. Thus, I asked myself what…
Continue reading "ROS URDF: Projekt aufsetzen"
This module is similar to the HC05 and can establish a serial connection via Bluetooth. The logic inputs/outputs operate at 3V, so the module cannot be directly powered by controllers with 5V. Facts Description Value Supply voltage 5-7V Logic voltage 3V Receive pin RX Send pin TX Baud rate (adjustable) 9600 Pin 1234 Details Application areas Remote control / Remote operation Short-range communication...
Continue reading "HC-06 Blutooth Modul"