TheBackShed.com

Home	JAQForum Ver 24.01
Log In or Join
Active Topics
Local Time 09:11 06 Jul 2025	Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : iam blind or ...

Author

Message

plasma
Guru

Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 06:34am 12 Apr 2014

Copy link to clipboard

Print this post

have micromite no solution for sending ir commands ?

WhiteWizzard
Guru

Joined: 05/04/2013
Location: United Kingdom
Posts: 2932

Posted: 07:52am 12 Apr 2014

Copy link to clipboard

Print this post

Hi plasma,

Page 16 in the manual talks about sending IR commands:

Infrared Remote Control Transmitter
Using the IR SEND command you can transmit a Sony compatible infrared remote control signal. This could be used to control a Sony product or communicate with another Micromite.
The circuit on the right illustrates what is required. The transistor is used to drive the infrared LED because the output of the Micromite is limited to about 10mA. This circuit provides about 50mA to the LED.
To send a signal you use the command:
IR SEND pin, dev, cmd
Where pin is the I/O pin used, dev is the device code to send and key is the key code. Any I/O pin on the Micromite can be used and you do not have to set it up beforehand (the IR SEND command will automatically do that).

Note that the modulation frequency used is 38KHz and this matches the common IR receivers (described in the previous page) for maximum sensitivity when communicating between two Micromites.

plasma
Guru

Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 12:31pm 12 Apr 2014

Copy link to clipboard

Print this post

thanks whitewizzard , no its time to test .

thx again

Lou

Senior Member

Joined: 01/02/2014
Location: United States
Posts: 229

Posted: 03:37pm 12 Apr 2014

Copy link to clipboard

Print this post

plasma,

I hooked the IR LED up directly to a port line in series with a 220 ohm resistor instead of using the transistor circuit. You may not get much range but if you're just testing that is quick and easy, and it does work. I had two uMites talking back and fourth right after Geoff put in the IR transmit function.

Lou

Microcontrollers - the other white meat

Print this page

To reply to this topic, you need to log in.