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Color mixer: control a RGB-LED-strip with the Raspberry Pi and the N-Channel-MOSFET IRLB8721

LED strip

RGB LED strips are cheaply available these days, e.g. 5 meters strip for around 13€ on Amazon. Together with a Raspberry Pi and a few more components you can light your home or car individually in amazing ambient colors. This tutorial shows how to build a LED color mixer. The circuit and code where tested on a Raspberry Pi 3, but it should work on all models without changes. Continue Reading

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RPi-Band: DrumHAT and PianoHAT simultaneously on a single Raspberry Pi

RPi-Band - Piano HAT

Two of the greatest Raspberry Pi hardware attachments (HATs) are the Piano HAT and the Drum HAT, both available on Pimoroni.com. The software coming with the HATs is close to plug&play and works fine, but only for one HAT at a time. The software presented in this post, RPi-Band, allows using both the Piano HAT and the Drum HAT simultaneously on a single Raspberry Pi. Continue Reading

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A Primer on Debugging and Developing with the IPython IDE and IPDB

IPython IDE

The IPython IDE is an interactive development and debugging tool and a great help in Python software development. It’s also the core of the wonderful Jupyter IDE. Debugging short pieces of code can be done by printing variables, calling functions with edge parameters and so on. If the code grows, a more efficient approach is necessary. Continue Reading

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Build a basic Raspberry Pi Robot in no time with the RaspiRobotBoard v3 HAT

Raspi Robot

Building a robot has never been more easy than with the Raspberry Pi and the RaspiRobotBoard v3 from Simon Monk. Learn in this tutorial how to build a robot that rovers around and avoids collisions with obstacles, with just a few lines of code. The RobotBoard itself is available for 27€ on Amazon; all in all, the robot presented herein costs around 90€. Continue Reading