3D-Printed Wall Mount for Home Automation Console

I got a Kindle Fire HD6 for a really great price from Amazon.co.uk on Black Friday, which I’m using as a  console for my Home Automation system. I though it’d be nice to have it mounted in a convenient location in the house. In this article I describe the design of a 3D-Printed wall mount for it, and I even supply the STL file as an attachment so you can print it yourself!

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Posted in Home Automation

Nest Thermostat problems (and how I’m working around them)

I got a Nest Thermostat recently and it was installed (for free) by my Electricity Supply company. Initial reactions were good, however as time goes on, I’m less and less happy with it. This article covers my initial attempts at getting around some of it’s shortcomings, and future articles will cover more.

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Posted in Home Automation

Indoor Sensor Hub Experimentation

I’ve recently been playing a lot with temperature humidity sensors, and a little bit with smoke gas sensors and PIRs (motion sensors), as well as WeMos D1 Mini ESP8266 based MCUs.

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Posted in Home Automation

Encrypted 433MHz links using RFM69’s

IMG_0886bI recently had the need to have a doorbell at the entrance to my property, having recently put in automated gates. I could have run a cable, but I wanted to try out some new 433 MHz transceivers I recently purchased. The entrance would have a push-button switch and the house would have a receiver accepting packets from the entrance.  Once it got a packet, it would trigger a relay to ring the doorbell. The doorbell was an old model, driven by 12V AC, so I thought a relay would be the handiest way to triggger it’s chime. Also, attached to the internal Arduino would be the old doorbell, connected to a gpio input which could also trigger the relay, activating the doorbell. Two methods to chime the same doorbell.

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Posted in Tutorial

Add 3 USB ports and an Ethernet Port to Intel Edison / Raspberry Pi Zero for $3.20

IMG_0238b

I’ve been a user of many Single Board Computers for a while now, and I always like to have the option of plenty of USB ports and and Ethernet port. I recently came across these devices, which combine 3 full-sized USB ports AND an ethernet port in the one device, terminate by a micro USB connector.

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Posted in Uncategorized

Lightning Dress

Lightning2IN October 2015, we had the launch event for the “Lightning Dress”, a garment we’ve been working on as a group in the local Fablab for the last 6 months. It’s got approx. 700 RGB leds, all individually addressable, so it gives great flexibility for generating interesting patterns and effects.
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Posted in Computer Stuff

Damp-Pi – Room Moisture Extraction with Raspberry Pi

20150824_165453bOver the last while I’ve been having a problem with excess humidity in the shower rooms. Imagine that, the builder never put in extractor fans when the house was built! Anyway, I could put in those fancy extractor fans with the built in timers or humidity sensors, but I decided to do things the more interesting way, by using a small computer to read the values from a humidity sensor in each room, and based on the readings, turn on the fan until the humidity was reduced to an acceptable level.

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Posted in Computer Stuff, Raspberry Pi, Tutorial Tagged |

Raspberry Pi 2 Benchmarked

IMG_1343 copyI got myself a new Raspberry Pi 2 Model B this morning. I was intrigued by its quad-core cpu and how it would stack up against the other single board computers that I’ve benchmarked in the past, which were:

  • Raspberry Pi Model B+
  • Beaglebone Black
  • Intel Edison
  • Imagination MIPS Creator CI20

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Posted in Computer Stuff, Raspberry Pi

Creator CI20 Benchmarked

800px-CI20_perspectiveI recently got a MIPS Creator CI20 from the guys at Imagination to play with. So here’s a quick of my first impressions, including a few benchmarks with sysbench. Performance overall was quite good compared to a Raspberry Pi 1 model B+, and even was pretty good compared to an Intel Edison on the CPU benchmark.  Continue reading »

Posted in Computer Stuff

3D Printed Raspberry Pi Model A+ Case

 

IMG_1123The Raspberry Pi Model A+ is very cute. But it’s even cuter with it’s own 3D printed case. Here’s a case design for you to download and print yourself!

 

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Posted in Computer Stuff, Raspberry Pi, Tutorial