Väntar på varmare väder

Trots att det inte är riktig vinter så ligger temperaturen lite för lågt för att kunna fortsätta med gjutning av pelarna. Kom ingen nu våren…

Arduino – capacity touch

Here is a very simple but interesting project using Arduino which with only one passive component (a resistor) will allow us to detect touch.

Arduino project video

and here are some more details about the included library.

Funky 3

This is a hobby project by Martin Harizanov. A small Arduiono with usb and radio module.
This is v3 of my “Funky” Arduino clone, specifically designed to be small, with on-board radio module and for low power applications.

Highlights

Board size is 20×21.2mm (0.78″x0.83″)
Weighs 3 grams (0.11 oz)
Compatible with Arduino IDE
ATMega32U4 MCU, the same as processor used in the popular Arduino Leonardo
No need for external programmer to upload new sketch – just use micro USB cable
Equipped with 433/868 wireless RFM12B or RFM69CW transceiver module
Runs on 8 Mhz and can be powered from 2.7-3.3V power source, including coin cell battery
Low power operating mode

He also has a gateway board for the Raspberry to use as gateway to talk to wireless nodes such as the Funky and emonTX, JeeNode, etc

Raspberry Touch screen

Get all the code here

Node red

IBM is very active in both open source as well as in IoT. Here is a very nice tool for anyone into integration of any sorts of data flow.

I have it installed on one of my Raspberry Pi’s and it allow me to visually create integration mixing hardware and software.

Head of to http://nodered.org if you have yet see this.

Update, 25 Jan 2016: Node Red is included in the Jessie build for Raspberry pi. After struggling to get the GPIO to work with my old build, I decided to start from scratch. It was worth it. Node red is now only a menu option away, works like a sharm.
Extra benefit: The new GUI in Jessie (if you don’t decide for the slim down version) is very nice.

One example of what I included as my first experiment:

I have motion running with a camera overlooking my garden and street. As soon motion is detected it sends an event to a MQTT broker I’m running on another Pi. Then I have a node flow that subscribes to that topic and makes a http against my Sonos system to play a short notification indicating ‘car is arriving’. The Sonos api is based on node (min version 4) by jishi.

PCB design

Fritzing is a useful PCB design editor and on their site (http://fritzing.org) you can as well find a lot designs shared by others.
I haven’t yet tried the Fritzing fab, to turn you design into a real pcb, but will put it on my wish list.

Väggarna monterade

Förra helgen var det isbeläggning i botten men idag bättre lämpat väder. Ca 9 grader och lite dugg regn.

Alla väggelement är nu fastsatta med fogskum (Sika Boom S All season). Skönt att ha passerat detta momentet. Jag kommer täcka alla pelarhål för att inte få dom vattenfyllda inför nästa moment som är att gjuta pelarna.

Inför montering av väggar

Nu är det förberedelser inför monteringen. Jag tar ut samtliga element och ställer ut dom på prov. Bestämmer mig även var jag skall starta och gör lite extra mätningar.