DS3231 RTC Control and Theory with the Bus Pirate

Rasperry Pi Connected to DS3231

The Maxim DS3231 is an accurate, yet relatively expensive real time clock (RTC). It has an integrated temperature compensated crystal and communicates over I2C. More information can be found from the dataset. At the time of this article the chip alone cost around $8.7 in quantities of 1. I acquired a couple to use with another project. I didn't account for the fact that the footprint is the wider variation on SOP 16 and so they remained unused on the board I designed. I never redesigned the board so I had these chips sitting around unused. Recently I ...

more ...

Raspberry Pi Holga Digital Camera

Holga Front Open with all parts connected

I was struggling trying to get a USB capture device working with the Pi. Annoyed by those difficulties, I stumbled upon Kimondo's Digital Holga 119d project. I had a Raspberry Pi Model A and a camera module laying around, so I decided to build one myself. I started off with his ideas and went my own direction where I felt necessary.

Parts

more ...