Hi Nick,
Thanks very much for your fast response. Unfortunately I am doing this as part of an university project, and I have already bought the CC2540DK, so time and money is a bit of the essence. I think this leaves me with two options:
1) buy the CC2541DK-SENSOR kit. How much would this be? I might be able to justify it if it works with my present kit and I could investigate using my CC2540DK chip as a relay to increase the range, but I am trying to avoid buying more components if i can.
2) Hack the temperature sensor: I can get any temperature sensor that would fit, the application is to measure the temperature a washing machine (maybe from inside the machine), so a fairly durable one with a temperature range up to a few hundred degrees is probably what I am looking at. Do you have any recommendations of which interface would be most appropriate/links to guides that could help me hack it?
Yes, the HTC Desire does seem to fail at the job quite superbly. Is there any possibility of buying or creating a chip that takes a BLE signal and outputs it as a Bluetooth 2.1 signal? I'm aware that this could be a pretty big project, but I have quite free reign with my uni project and if a converter like this looks like an interesting technical challenge/solution, I could take my project in that direction. If not, I guess I'm getting a new phone!
Thanks again for your help, I hope I don't take up too much of your time.
Best Regards,
Ben