Finishing the Power Regulated Power Supply

I finished up the Adjustable breadboard power supply kit - v1.0 by following their excellent directions. One word of warning though. The power supply kit generates two different voltages on the two sets of output pins. The left side is the selected voltage range …

A 5V Interlude

The next phase of my project is to get a working multisegment display. I'd like to hook up several of my multisegment LEDs but before I do that I have to get more power since the Raspberry Pi doesn't supply much current out its pins.

I've decided …

Writing to the SPI Interface

The SPI interface is working on the Raspberry Pi and so I'm getting ready to send some information to the 4-Wire-Intefaced 20-Port LED Display Driver and I/O Expander (MAX6957), called the 6957 from now on. The issue that is mentioned from the data sheet …

We left off with the hardware being hooked up but no software to run our project. I wanted to test the SPI hardware and the best way to do so is with a loopback test. After using my favorite search engine I found a post called SPI-Python: Hardware SPI for …

If you look at my first light post there is a glorious picture of a blank breadboard hooked up to a Raspberry Pi. I got it to flip a bit on the GPIO (#21) but I really wanted to see something. I'd like to do that classic project, lighting an …