I have recently bought a small 315Mhz RF tramsitter and receiver. Each of them have 4 pins coming off.
The transmitter pins are labeled 1)VCC 2)GND 3)DATA 4)ANT
The receiver pins are labeled 1)GND 2)DATA 3)DATA 4)5V
I am not wanting to hook the transmitter and receiver to MCUs.
I am simply wanting to hook a button on the transmitter to activate a motor that is hooked to the receiver. Can anyone please help me out with this??? What wires should go to which pins??? How should the power supply be hooked up to the pins??? Maybe someone out there can email me a picture of how it should go???
I am really needing help with this and would GREATLY APPRECIATE any help at all!!!
That’s not going to work. The reciever is always receiving “junk” due to interference on the RF band. It’s like ‘snow’ from the old TVs when tuned to a channel that didn’t exist. You need some way to encode the data so that the other side can tell that you are actually sending something to that particular receiver. Microcontrollers work, but they aren’t the only way. There are encoder/decoder chips that can be used for such things. I don’t know any part numbers off hand though. I always just use MCUs.
Ok. So once I order the encoder and decoder, I’ll be able to hook the encoder to the transmitter, add a button somewhere, and add the decoder to the receiver and add the small electric motor somewhere? Haha I’m sure its obvious that I’m new to this kindof thing.
Someone told me that I’m just trying to make a remote relay.
If anyone knows where I could get detailed instructions on how to do this please let me know!
OR if anyone is generous enough to walk me through this or draw a picture that would be great too!
This is a link to exactly what I ordered off of ebay if it helps.
Browse the Rentron site as philba suggested. There are a number of schematics for 4 bit and 8 bit systems. They also sell the Holtek encoders/decoders, and Rentron has an encoder/decoder pair that they developed. Their pair is arguably the easiest path to take.
BTW, the vendor that supplied the transmitter and receiver also sells a transmitter with an on board encoder and a receiver with an on board decoder. That would have made things a little simpler for you.
I’ve ordered from both Rentron and Futurlec and have been very satisfied with both companies. However, if you are in the states, it has taken between 10 - 21 days for my order to arrive from Asia. If you need the parts quicker, order from Rentron.
If anyone knows where I could get detailed instructions on how to do this please let me know!
The link to the encoder and decoder:
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The link to a the schematics for the encoder and decoder:
It's more than a little frustrating to give advice that is **exactly** what is wanted but ignored in favor of asking for some one to wrap it up in a box with a nice pretty ribbon on it. Don't people actually engage their brains anymore???? How do people learn anything these days? "Oh, actually looking around a site is just too hard. Oh, I might actually have to think. The horror. I'd rather wait for some one else to tell me." Yeah, I'm cranky but it's stuff like this that makes me not want to help people.
Alright guy I understand where your coming from. It’s not that “I don’t want to learn” because Im trying to learn it. I just do not know where to learn it. My high school doesn’t teach electricity anymore so I can’t learn it there now. I’ve looked into some books about it but I don’t want to blow my money on something that I can I only ‘hope’ that it teaches what I’m looking for in it since I do not know the technical terms of what i want to learn. The way that I am learning presently is by asking questions/directions/advice on these forum sites and having people like you reply to them. So don’t think that I do not appreciate you helping me even if its something as simple as pointing me to some website. I’ve been searching for months now and have spent over $60 on different parts hoping that I’ll find the right way to make this SIMPLE device I’m trying to make when I’ll probably find out that it only wouldve cost me half of what I spent if someone just told me what to buy. Well thank you for your time.
When I was younger and had little money (in the dawn of time before the internet) I would get my hands on everything I could read about electronics. I would spend hours pouring over catalogs - you can actually learn a lot that way. I’d check out engineering books from the library (I was like 13). Way over my head. I ate up “The Amateur Scientist” in the back of SciAm. I hung out at a surplus electronics store.
With the internet, there is 1000X more stuff to read. I would have been all through the rentron site. (actually, I HAVE…). The tutorials, circuit diagrams, datasheets. sponge it all up. even if you only get 1/4 of it. The other 3/4 will start making sense.
Asking questions is ok but you’ll never get far if you serially ask questions.
When I was younger and had little money (in the dawn of time before the internet) I would get my hands on everything I could read about electronics. I would spend hours pouring over catalogs - you can actually learn a lot that way. I’d check out engineering books from the library (I was like 13). Way over my head. I ate up “The Amateur Scientist” in the back of SciAm. I hung out at surplus electronics store.
With the internet, there is 1000X more stuff to read. I would have been all through the rentron site. (actually, I HAVE…). The tutorials, circuit diagrams, datasheets. sponge it all up. even if you only get 1/4 of it. The other 3/4 will start making sense. Amp up your intellectual curiosity.
Asking questions is ok but you’ll never get far if you serially ask questions. I predict you will never do much if you wait for people to tell what to get. Sorry, I don’t mean to turn you off from electronics but you must spread your wings and fly grasshopper.