Paul wrote:For now these are what I can only use from your Studio:
- BLE Scan
- BLE Discovery
Do you suggest me to buy a BLE shield from RedBearLabs that could be used with your Evothings apps ?
… as I have heard about some CPU limitations for BLEND boards…
you can use any of the BLE examples with the Blend, it is effectively an Arduino Leonardo with an integrated BLE chip (same that is on the BLE shield). the device is no more limited than other similar boards available - especially when you are using the AVR based models. if you would be looking at more performance, you would need to consider something like:
- Arduino Due
- Intel Galileo
- Intel Edison
which will give you much more than 16Mhz of processing power - depending on the state of the various libraries; it should be possible to use the BLE shield on such devices (worth checking first); as these boards either use ARM or x86 CPU architectures. depending on what you want to do; you may find that the Blend is sufficient - we have successfully integrated one into a remote control car and controlled it from a mobile device.. surely if you just want to trigger a relay; the AVR CPU would be sufficient.
a good starting point would be here:
http://www.arduino.cc/playground/upload ... relays.pdfgoogling helps a lot too:
http://www.instructables.com/id/Control ... elay-modu/https://www.youtube.com/watch?v=Z-0tN2F088Iconnecting a relay should be the easy part.. probably the more difficult part would be figuring out how to establish a connection between your mobile device and the Blend and establish a form of communications protocol and then act based on whatever information you receive from the mobile device. our Arduino BLE example could be a good starting point there - as it demonstrates two way communication and will work perfectly fine with the Blend.
http://evothings.com/arduino-ble-quick-walk-through/of course; you are welcome to continue asking questions and we can see what we can do to assist you - there are a number of readers here who may also be able to assist you as well.
