The Classroom
The CD4017 Decade Counter
The CD4017 is another useful IC for the maker, both for discrete projects and some microcontroller applications as well.[READ MORE]
Daniel Koch
Issue 39, October 2020
PCBEasy
How to Design a PCB using EAGLE
We show you how to design custom footprints for components that are not in the EAGLE parts library.[READ MORE]
Johann Wyss
Issue 39, October 2020
Explore 3D
3D Printed Gears
Learn how to design and print functional gears for your next project or to replace a broken gear in a toy or tool.[READ MORE]
Geoff Cohen
Issue 38, September 2020
The Classroom
The LM311 Voltage Comparator
This IC is a low-component-count way to compare two signal voltages or a signal and a reference, and switch the output either...[READ MORE]
Daniel Koch
Issue 38, September 2020
The Classroom
The ULN2003 Darlington Array
This specialised IC provides a neat and effective interface between a stepper motor and an Arduino or Raspberry Pi. The...[READ MORE]
Daniel Koch
Issue 37, August 2020
PCBEasy
How To Etch A PCB: Part 2
In this issue, we show you how to etch a PCB at home using photoresist and sodium persulfate etchant. In the previous issue,...[READ MORE]
Johann Wyss
Issue 37, August 2020
