i have a few questions about this product that i’ve tried to figure out from descriptions and google searches, etc. if i missed the answers, it wasn’t for lack of trying.
in the simplest terms, i am building a remote controlled cart with several servos on it. i’m considering using this product (or perhaps 2 of this product) as the remote control system.
i’d like to know:
does this paired transmitter/reciever operate 4 channels? so that if i put 4 inputs (like buttons or potentiometers) on the transmitter side and 4 servos on the reciever side, i could program (with an arduino) the inputs to activate the servos.
…and…
i would like to have only the reciever connected to my arduino when i am operating the cart. is this possible? or does each side (transmitter and reciever) need to be connected to a microcontroller while the system is in operation?
…and…
is it possible to use more than one of this product on the same cart (with the same ardruino uno microcontroller) at the same time?
The RB-See-13 transmitter/receiver pair does indeed have 4 channels, however they are digital and have a max rate of about 2 command per second. This means that they cannot be used directly with potentiometers and cannot carry a PWM signal for servos.
You can however use a microcontroller like an Arduino with the transmitter to convert the analog input of a potentiometer to a digital output to be used with the transmitter. You can also use a microcontroller to receive the signals from the receiver and convert them to equivalent R/C PWM signals for your servos. The tricky part though is figuring out how to encode your signals onto the 4 channels of the radios. If you simply have four on/off switches, then they can be connected directly to the transmitter without needing a microcontroller.
You can however use many of these radios in parallel: they have encoders that have 8 address bits, allowing theoretically up to 256 devices used in parallel. If you had two receivers, you can indeed connect the 8 outputs to an Arduino to be able to decode your servo control signals.
We hope this helps and let us know if you have other questions.
