Bluetooth was problematic, now to RF?

Projects General Guidance
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Hi Forum users,

I hope to get some advice if my plans ahead would work,

Short story was that using a HC-05 Bluetooth was very problematic for the software on the PC, the HC-05 bluetooth's COMM port was laggy compared to when the COMM Port which shows up from the Arduino USB port.

I think RF might be an alternative,

The goal was to wirelessly transmit a valve, 1 single valve.. The software on the PC basically controls a valve.

Perhaps I can wirelessly RF Transmit a Signal (PIN13) which goes HIGH and LOW from the Arduino board, and I can receive the signal to a MOSFET Board which drives the Valve.

Please let me know if this is basically hooking the PIN13 to the Transmitter Signal Pin,
and then the Receiver Signal pin to the Signal Pin on the Mosfet Board

That should work?

Regards,
Shaun

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What are the RF transmitter and receiver?

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Hi GroundFungus

Here is the item I have ordered, on the way to me, just a few dollars..
ebay.com.au/itm/301924686795

I am totally open to alternative parts which will be better?

Also, would Bluetooth master and slave be worth me looking into?

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What do you think Bluetooth uses to communicate, if not RF?

1 Like
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What range (distance) do you need? Does the receiver just switch something (MOSFET) on and off?

Can you draw and post a diagram of the system, please?

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Arduino Diagram
Arduino Diagram1625×769 10 KB

As requested a diagram of current setup.

Distance would want to be up to 4 Meters distance. I might like option for 10M with 1 wall inbetween, Wood Frame/Plaster Wall

I get that Bluetooth is RF, but the comm port was a no go!,
I am not sure if an alternative would work, I have a pair of BT-05, (AT-09 Cheap Clones) I think master slave to transmit the PIN13, but never setup and hear these are painful to setup.

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Where does the RF fit? Between the PC and Arduino or between the Arduino and the MOSFET board?

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Arduino Diagram2
Arduino Diagram2916×495 4.51 KB

Not that I know about Arduino, but would like that Wire between Pin 13 & the Mosfet Signal Pin.
become wireless.

I did already try PC-Arduino Wireless via a HC-05,
but the Bluetooth Comm Port was problematic. (laggy)

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Hello toxsickcity

Specify "laggy".

Keep it simple and stupid. Run this tutorial and expand it to your needs.
https://create.arduino.cc/projecthub/electropeak/getting-started-with-hc-05-bluetooth-module-arduino-e0ca81

Have a nice day and enjoy programming in C++ and learning.
MIND THE GAP

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I spent alot of time looking and troubleshooting the HC-05 issue I had. The issue appears to be the commport.

The PC program which transfers data to it would slow to a crawl.

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I saw a YouTube video looks like the RF kit will flash a LED.. which is essentially same as turn on and off the MOSFET board.

I think it will work ok

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I have resolved the main issue, I needed to go into AT Mode which was really difficult, I think this is a Clone Board or something, I have changed the baud rate to 115200, YAY

The program on my PC must of not liked the Bluetooth device link at 9600/38400 or whatever the default is.

Either way I will also continue to experiment with that RF boards I ordered to see what ends up happening.

Absolutely STOKED!

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