need someone to write a simple RF protocode for the communication between a robot and several end device -- one RF device will be on the robot as the Master -- a microncontroller will be on the robot -- there are several end devices on the field -- on each of the end device, a RF device will be on it to act as Slave and for this applicaiton, there are many end devices (many slaves) -- there is a microcontroller on each of end device -- end devices are to sense the motions -- when end device sense the movement, it has to send the info back to robot right away, at least, without too long time delay if info is sent back to robot too late, the info will be old, not quick enough to reflect the motion behavior -- the latency of the RF device and microcontroller, ...is expected to be as short as possible -- i am thinking to use nRF24L01 device from Nordic -- it is possible that end devices may detect the motion at the same time, and send the detected info back to the robot at the same time, therefore, a multichannel data transmission may be needed -- in order to know the exact time of the happend events, if possible, i like to synchronize all the devices (or near synchronization, with a very short time difference) Desired Skills: Electrical Engineering, Integrated Circuit, Digital, Electronics, Wireless Keywords: Electrical, Electronic, Circuit, Engineering, Integrated, Wireless, Digital