Hello,
I am helping some students with a science project and they need to be able to turn on a low voltage DC circuit that has a LED light with a remote.
Can someone recommend a small circuit board and a remote that could be used for this?
Maybe there is a way that a smart phone could be used as the remote?
Thanks for your help.
But I’m not asking for the support from Robotshop on them, I am asking for information on the technology how RF receiver/transmitter works.
The manufacturer (“true” manufacturer) is from Asia and cannot give me the information that I ask.
How you responded was like me asking “how does a keyboard work?” and your response being… “well, since we aren’t the supplier of the said keyboard we can only suggest that you contact the manufacturer…” CORRECT ANSWER: A keyboard works through means of a multiplexer to pull ground to each key that is pressed, that is how the receiver (computer) knows what key is being pressed without having a wire for each key.
It wouldn’t matter where the keyboard came from, all keyboards work electronically the same.
Okay, I’ll do it your way.
How does RB-Fra-53 (2-4 Channel Remote Control System) work?
Based on the description, is this 2ch and remote being 4 button or?
If it is 2ch, are there 2 buttons assigned to each relay? If so, how is this accomplished so that you have a “code” from each of 2 buttons being sent to control one relay?
I am an engineer for my employer. I have a $30,000 piece of equipment that I want to be able to control a 12v solenoid by means of RF technology. This is to be installed on a customer site and I want to be able to program remotes into the receiver in the event that one becomes damaged beyond use or lost. I know that the frequencies have to match of the transmitter and receiver. I know that the static code from the transmitter (remote) has to be “programed, learned” into the receiver. I want to be able to replace the remote by just buying an additional and having the customer program onsite. My concern is that I want a programmable receiver that is 1ch or 1 relay and to have a button for ON and a button for OFF. NOT a button that does both since I have to always assume that the end user is an idiot. If there is is a button to turn it on but no OTHER button to turn it off then this poses a problem. This is because some people just need ONE button for ONE function and to have ONE button that has two functions just confuses and scares them.
I also have a question related but I need a more technical answer. This is regarding what you recommended the publisher of this thread.
I understand somewhat what the transmitter and receiver do. but I don’t know how something is accomplished as I cannot find documentation ANYWHERE on SeeedStudio or Google search.
I have purchased a similar device from elsewhere, but it was 1 channel.
Of the two 1ch wireless remote 12v relays I purchased from different sources I got:
-1 unit with 1 remote (an additional was purchased of same freq.), remote has 1 button, receiver has learning button to program transmitters of same frequency. I understand the modes of latched, toggle, and momentary. In toggle- press/release button to power 12v on NO contact; press/release again to stop 12v power. In momentary- press/hold button to provide power to contact; release button to halt. In latched- press/release button to provide 12v to contact; no way to turn off unless disconnecting power to receiver.
What is the purpose of having latched if no way to unlatch?
Is this accomplished by “learning” a remote that has 2 buttons?
I ask this because the receiver you recommended is 4ch and transmitter is 4 button, which in my experience with these devices, will only activate/halt one channel (relay) per button in toggle or momentary.
My other device does not have learn button in receiver, is 1ch (one relay), transmitter has 2 buttons; one for ON and one for OFF. How is that accomplished??? How is a 2 button remote for a 1ch wireless relay programed so that both buttons control the same relay but opposite actions??
I would like to buy these pieces you recommended but not before I get an answer on what I need to do and waste money again.
I have contacted many distributors with these same questions and they are clueless and everything they respond with points back to Asian manufacturer that cannot answer either.
The following products may be of interest:
]SeeedStudio 2-Channel 315MHz Wireless Relay Switch/:m]
]2-4 Channel Remote Control System/:m]
]GWS 4-Channel 2.4GHz Radio Control System plus DFRobot Single Relay (ensure pin connections are correct)./:m]
If the relays you purchased are not from RobotShop, it is not easy for us to support them. There is not “universal” approach to wireless remotes, so the only approach is unfortunately to refer to any user guide for that product, and in its absence, contact the manufacturer. We here at RobotShop do our best to partner with suppliers who are reliable when it comes to supporting their products. Although you may save a few dollars but choosing products from a different suppliers / site, the support may be minimal or non-existent.
RB-Fra-53 is essentially a dual wireless motor controller (H-bridge);
The main control box is connected to two actuators. Each of the remotes has two buttons assigned to each actuator to control direction. Two additional remotes can be added but would serve the same function.
Correct; two buttons control the direction of each actuator
Each remote has a small microcontroller onboard, as does the receiver. In order to pair the remote with the receiver, there is a small procedure to follow.
Based on how you described the project, RB-Fra-53 would suit your needs, and additional remotes are available (special order).
