Category: Raspberry Pi

PiPhone – A Raspberry Pi based Smartphone

IMG_0872cHere’s my latest DIY project, a smartphone based on a Raspberry Pi. It’s called – wait for it – the PiPhone. It makes use an Adafruit touchscreen interface and a Sim900 GSM/GPRS module to make phone calls. It’s more of a proof of concept to see what could be done with a relatively small form factor with off-the-shelf (cheap) components. I don’t expect everyone to be rushing out to build this one, but I had great fun in doing it, as it builds quite nicely on my previous projects, especially the Lapse Pi, a touchscreen time-lapse controller, and uses most of the same hardware.

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Lapse-Pi Touch – A Touchscreen Timelapse Controller

SZ0A4263So here’s my latest Raspberry Pi project. It uses the PiTFT Mini Kit, which is a 320×240 2.8″ TFT display and Touchscreen from Adafruit Industries that fits neatly onto my Raspberry Pi, to control a user interface to drive the back-end time-lapse script I showed you in a previous blog article.

 

 

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Pi-Rex – Bark Activated Door Opening System with Raspberry Pi

(DISCLAIMER: Not meant as a security solution or a lesson in good dog behavior. It’s an experimental proof of concept to play with the application of embedded computing to solve particular use cases)
Sleep deprivation has been driving me mad recently. And it’s all down to a new member of the family (kind of), our new dog. She barks at night when she’s left out. She barks early in the morning when she’s left in. So once I recognized the patterns of her barking, I realized that all I needed was something that would let her out when she needed to go for a pee, usually around 6:30 in the morning. I could do this with a timer switch and a door strike, but where’s the fun in that.

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Add a 9-pin Serial Port to your Raspberry Pi in 10 Minutes

Here’s how to add a 9-pin serial port to your Raspberry Pi, and it’ll only take you 10 mins. Well, maybe a couple of weeks to wait for the part to arrive from Hong Kong, but once it arrives, it’s only 10 minutes! 😉

Here’s the part you’ll need. It’s an RS232 to TTL converter module containing a MAX3232 chip. The MAX3232 is important, as the older MAX232 won’t handle the 3.3v levels of the Pi, whereas the Max3232 will. It comes with a 4-way cable for connecting the module to the GPIO of your Pi. If you search on eBay for “RS232 Serial Port To TTL Converter Module MAX3232” you should find several. The one I got cost me €3 with free shipping from Hong Kong.

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Lapse Pi – Motorised Time-lapse Rail with Raspberry Pi

Here’s another article in the series of photography related DIY projects using the Raspberry Pi single board computer. This time it’s a Time Lapse rail.

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RAID Pi – Raspberry Pi as a RAID file server

This mini-project uses a Raspberry Pi as a RAID array controller.  Now it won’t be the fastest raid controller on the planet, but if you’re only doing a bit of streaming, and a bit of backup, and would like a bit of redundancy, then this solution might be for you. OK, maybe not. The performance will be slow. Very slow. This article is not meant to be a serious solution, I just did it because I could. I did it to see if it would work. And it seemed to.

Macro Pi – Focus Stacking using Raspberry Pi

Here’s another in the series of articles of photographic uses for the Raspberry Pi SBC (Single Board Computer). This time, it’s re-purposing an old flatbed scanner as a macro rail for focus stacking images in macro photography.

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Camera Pi – DSLR Camera with Embedded Computer

I’ve had the idea of embedding a computer  DSLR camera for a couple of years now, but for whatever reason I never got around to implementing it, mostly due to the cost of small single board computers. Until now, that is. With the release of the Raspberry Pi, embedded computing has all of a sudden become much more affordable. At €35 for the computer, it’s far cheaper than any of it’s rivals.

So what I’ve done is take an old (broken) battery grip that I had lying around (for my Canon 5D Mark II), and made a few modifications to it so I could fit the Raspberry Pi SBC (Single Board Computer) into it.

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