Basic Wireless?

Hi,

I'm having trouble trying to find a cheap and effective way to send a simple wireless pulse for my project. I don't need to do anything other than literally send a wireless ON/OFF signal, no data and not over a network etc. What would be the cheapest and most effective way to go about this? Xbee etc all look overkill for what I'm trying to achieve. The range I'd be looking for would be around 150-300ft.

Is that range line-of-sight or through buildings? If the latter you need a bit more power. An ISM solution seems a good choice, commonly used commercially for wireless remote control.

It would be useful to be through buildings, certainly wouldn’t always be line of sight. Do you have any more info on ISM? I’ve done a Google but not sure what I’m looking for, are there ISM units that people prefer for Arduino?

Have a look on the 315 or 434 Mhz Wireless Transceiver http://www.sparkfun.com/categories/79 http://www.sparkfun.com/products/9582 It can use VirtualWire http://www.open.com.au/mikem/arduino/VirtualWire.pdf http://www.open.com.au/mikem/arduino/

Looks perfect BillHo. Stupid question but buying two of the http://www.sparkfun.com/products/9582 units will mean they can talk to each other?

If you only need to send in one direction then you can probably use something like thus: http://www.seeedstudio.com/depot/315mhz-rf-link-kit-p-76.html?cPath=139_140, which is a pretty cheap option.

The RFM12B-S2 Wireless Transceiver sends and receives, and if you have two, you can talk back and forth. Maybe you don't need that, and a less expensive transmitter and receiver might work. Anyway, check out the JeeNode, not because you need this, but because it explains these RFM12B-S2 devices in a lot of detail.

http://shop.moderndevice.com/products/jeenode-kit

I've ordered a few bits from seeedstudio (it's cool they deliver to the UK). I've also just had my "Making things talk" book delivered yesterday. Thanks for everyones help, it's all been very useful and hopefully I'll get this cracked. :)