Start sequencers at the same time?

Projects General Guidance
1

Hi so I'm looking into a nRF24L01.

That's the Amazon page and here is what I believe to be a page on the specific part..

http://playground.arduino.cc/InterfacingWithHardware/Nrf24L01

I am wondering if it would work for me,. I have 3 light up suits, using EL wire and they are controlled by 2 EL Sequencers each. I have a sequence of how the lights blink with the music, I plan on basically saying to turn the pin on or off at a certain time, but I want to have a way so that they can start at the same time. My crude elementary way will be to have buttons and just hope for no human error, that everyone hits at the same time. Ideally I would like to have a way so that one button is pressed so that all three sequences start at the same time. I was thinking possibly using a hall effect sensor, and just putting the three sensors down on a table with a magnet on top and lifting the magnet. But that still leaves room for error. Which lead me into looking into wireless. Would it be possible and relatively easy to have wireless communication? I will have about 3 days to figure out the starting at the same time thing from when I get whatever input I want to use. If I get a weireless piece like Nrf24L01 could multiple boards communicate or could it just be between two? I guess if I get the ones as listed on Amazon I could have one board send to the next and then that board sends to the next. Correct? I am going to assume that they need to have a board in order to send anything?

Thanks in advance.

2

If you want two-way communication, you will need to do things sequentially, and that will probably be quick enough for visual "same time"ness.

If the EL controllers don't need to send anything back, you should be able to send one signal to all three receivers at once. If the nRF24L01 modules won't work tat way (ie. if they need to handshake with the transmitter), then a simple 415-433 MHz transmitter and three receives willl do it.

3

That's a better solution because the nRF24L01 modules have lousy range.