Need help with rf transmitter

R

Roosaann

New Member

• Dec 11, 2014

• #1

**broken link removed**
I am a beginner in electronics. This is the transmitter of RF module. There are the 4 buttons of transmitter and i want to control those buttons through my pc

 

alec_t

Well-Known Member

Most Helpful Member

• Dec 11, 2014

• #2

Welcome to the forum!
Can you post a link to the schematic for that module?
What are the IC markings?
Do the switches share a common ground connection?
Which PC output port are you proposing to use?
Do you have any general purpose digital I/O modules for use with the port?

 

R

Roosaann

New Member

• Dec 11, 2014

• #3

It uses TXM Tx-2B Ic and the switches share a common ground. I am thinking to use usb port for that.

Sorry for my bad english.

 

MikeMl

Well-Known Member

Most Helpful Member

• Dec 11, 2014

• #4

Roosaann said:

... I am thinking to use usb port for that...

Click to expand...

Which type of USB dongle? A USB serial port does not have four independent outputs. It would take a microcomputer like an Arduino to create four independent outputs to drive the four switches.

 

R

Roosaann

New Member

• Dec 11, 2014

• #5

Thanks for the suggestion . I am going to stick with arduino.

 

Last edited: Dec 12, 2014

alec_t

Well-Known Member

Most Helpful Member

• Dec 11, 2014

• #6

Perhaps use something like this?
https://www.canakit.com/4-port-usb-relay-controller.html

 

MikeMl

Well-Known Member

Most Helpful Member

• Dec 11, 2014

• #7

Here is a simpler, cheaper one

 

R

Roosaann

New Member

• Dec 12, 2014

• #8

No other ways to control those buttons directly from pc,or maybe through parallel port.

 

4pyros

Well-Known Member

Most Helpful Member

• Dec 12, 2014

• #9

Roosaann said:

No other ways to control those buttons directly from pc,or maybe through parallel port.

Click to expand...

This should get you started;
**broken link removed**

 

R

Roosaann

New Member

• Dec 12, 2014

• #10

Thanks for the help.

 

MikeMl

Well-Known Member

Most Helpful Member

• Dec 12, 2014

• #11

Roosaann said:

...or maybe through parallel port.

Click to expand...

What is a parallel port?

 

R

Roosaann

New Member

• Dec 12, 2014

• #12

 

M

moffy

Member

• Dec 13, 2014

• #13

If you use the parallel port the use some opto isolators for protection. Relays are inherently isolated (voltage free contacts).