I'm trying to motorize a pair of blinds that are outside my home, from within my home. The motors and stuff are outside, but I want to transmit the signal from within my home. The 2 boards are pretty close though!
Essentially, I have a wireless board hooked up to a few buttons, and when I press each button, I want a different byte to be sent to the other arduino to control the motor.
Key aspects are:
- Low latency, no more than 50ms.
- Reliable connection, as little dropped packets as possible? No idea what metric encompasses this.
- Secure connection, ideally, some method of pairing devices like bluetooth? (Wouldn't want someone else to control my blinds :D)
- Distance of around 50cm apart.
I tested out 433MHz RF modules with the arduino but I kept having dropped packets, maybe I was doing something wrong, but I also looked at Bluetooth and XBee 2.4Ghz. Leaning toward bluetooth at the moment for cost considerations, but was wondering if the experienced people here had any suggestions before I dived in and bought another chip to try!