Here are the buttons I picked up on ebay for this project. £5 for 2, or £20 for 8… These are simple push-to-make buttons.
29 Aug 2011
Omnima UK sell a tiny little board for less than £40, that runs on openWRT Linux and has ethernet, WiFi and a USB port. It seems to be a great base for simple projects, when we need more power than one arduino.
I’ve ordered one to try something I have in mind.
Btw, at the openWRT site, there is a VM available. I downloaded and tried it yesterday, but I had problems connecting USB peripherals…. Never mind. I have to say I loved the web interface and the precompiled binaries and the fact you can ran python on it!
11 Sep 2011
I’ve now received the device. It runs Fonera (have a look at some screenshots and more info here). Easy to access through a web interface. I tried to load the latest Fonera software and it didn’t quite work; now the device won’t boot. I’m able to log in to it using telnet and a serial cable, but I haven’t been able to load the old bin file yet… I’ll keep you posted…
This past week, I got my hands on a WiShield 2.0 from Async Labs (http://www.asynclabs.com/).
This is a very exiting addition to my collection of shields as it adds wifi capabilities to my projects!
There is a nice wiki page on the async_labs site (http://asynclabs.com/wiki/index.php?title=AsyncLabsWiki) and relevant code (libraries & examples) is hosted at the GitHub (http://github.com/asynclabs/WiShield).
I have a few ideas about this shield – stay tuned!
This is an SD card with a twist: it also has Wi-Fi which means that, if you use it with a digital camera, it allows you to send photos you’ve just captured on Flickr, Picasa, Facebook, email them or simply back them up online.
Sounds like a simple & great idea.
The site of the company behind this product is here: http://www.eye.fi/
Amazon is selling the Eye-Fi Pro 4GB cards for about £120 in the UK. http://www.amazon.co.uk/gp/product/B002RL9ALU/
There is a slightly cheaper model, Eye-Fi Share Video, which is also on Amazon for about £70. http://www.amazon.co.uk/dp/B002RL9ALK
It would be interesting to see if this ends up in an Arduino shield at some point. In the mean time, the best Wi-Fi solution for the arduinos seems to be the WiShield.
On Sunday night, I placed an order on the oomlout.co.uk site for a few bits I needed for a small project I’ve been working on.
I received the parcel on Tuesday morning and was very pleased with the fast delivery. When I opened it, I was really impressed with everything. First of all, all the components were in small resealable anti-static bags with a sticker with a description on them, which meant I could just put them in a box without worrying that I would forget where is what.
The second thing that really impressed me was that they actually included the description sheets for the multi-color LEDs and the force Sensitive Resistors I ordered. These sheets are also available on their website, but it was actually extremely handy to have them by my side, when I had the soldering iron on my other hand!
Last, but definitely not least, was the quality of the components!
I can fully recommend Oomlout.co.uk and I will be ordering again from them .
Sparkun are selling the following simple clock on their site: Link
This is a minimalistic clock that includes all the essential functions and is very similar to a product offered at Maplins in the UK that I have used before: Maplin link | My project which includes this module
There are two differences between the two clocks from Sparkfun and the Maplin. The first one is that the Sparkfun clock runs at 5V; the Maplin clock needs 9-18V (which then regulates down to 5 and generates quite a bit of useless heat in the process…). This for me, is a major design flaw! When I used it for this project, I had to power it from a USB port, which basically meant that I removed the voltage regulator and changed the wiring a bit to accommodate for the lower voltage.
The second difference is that the Sparkfun clock is based around the ATmega168 chip (i.e. the old Arduino chip). It would be nice if the code (provided by Sparkfun on their website) was in the Processing/Arduino language.
These are great modules to use for custom applications. Of course you can go down the I2C real clock module path and use something like this. The problem is that you add a whole new layer of complexity to your module. You need a way to display the time, controls to adjust the time, etc, etc… If you just need a basic alarm clock to flip a switch at a specific pre-defined time, just get one of these modules, replace the speaker with a transistor and you are sorted…
Anyway, enough about alarms