I was getting a bit frustrated with my old lab power supply, a Manson EP925. I bought it second hand many years ago during my student years. The problem with it is that it has only one output. For many electronics projects I need several voltages, like 3V3 and 5V. Dangerous prototypes sells a PCB […]
The Maxim MAX7219 IC is a serially interfaced 8 digit LED display driver. So it’s the ideal chip to drive an 8×8 led matrix. I got interested in these chips when I saw that lots of Chinese electronics shops were selling small MAX7219 led matrix modules. The weird thing is that the MAX7219 IC is […]
There are different types of DC-DC regulators. The most common are linear and switch mode regulators. Everyone that has tinkered with electronics has probably used a 78xx series linear regulator. They are easy to use since they don’t need any special components. With most linear regulators you just put a capacitor on the input and […]