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!

Continue reading “3D-Printed Wall Mount for Home Automation Console”

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.

Continue reading “Nest Thermostat problems (and how I’m working around them)”

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.

Continue reading “Encrypted 433MHz links using RFM69’s”

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.

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

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.

Continue reading “Damp-Pi – Room Moisture Extraction with Raspberry Pi”

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

Continue reading “Raspberry Pi 2 Benchmarked”

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 “Creator CI20 Benchmarked”