10 Threads found on edaboard.com: 38khz On Pic
You have to learn pic UART communication and IR sensor TSOP1738. Modulate serial data with 38khz signal(can be generated by pwm in pic) and send to IR led. The tsop will do the demodulation and gives back the serial data. Google it you will get lot of examples.
Microcontrollers :: 06-26-2015 07:59 :: MUKESH.K.S :: Replies: 6 :: Views: 822
1) Choose a microcontroller that has hardware pwm;
2) Configure the pwm for 38khz, 50% duty cycle.
3) Output your data serially on another pin
4) Connect your IR LED (with 330 ohm resistor in series, lower this for incresed range) between the above two.
Microcontrollers :: 02-25-2014 11:33 :: ard :: Replies: 14 :: Views: 1064
Well after reading this long discussion, I understand that you want to transmit data over RC5 from board and receive it on another and show it on LCD. That is farly easy.
First on transmitting board you need to make an IR transmitter. The IR led must be oscillated at 38khz and modulated to carry data. There are many ways to do that, simplest is t
Microcontrollers :: 07-19-2012 15:31 :: ameriq :: Replies: 20 :: Views: 3201
I am having trouble developing a 38khz signal (for an IR LED signal) on a pic16F687.
I would also like to program the pic in C (since I HATE assembly). Could someone please help and send some code if possible?
Thanks for your time and assistance!
Hobby Circuits and Small Projects Problems :: 05-27-2010 09:32 :: finzrt2 :: Replies: 1 :: Views: 2302
Could anyone provide some help on programming pic 16F 883 microchip to transmit a modulated pulse Infra Red(IR) LED light with carrier frequency of 38khz and the data rate of 5 Hz. On the receiving end, the other 16f883 microchip will have to decode and read the Infra red pulses. I am currently doing on a project of Infra Red gate that will sound
Microcontrollers :: 08-10-2009 22:57 :: guesslsc85 :: Replies: 0 :: Views: 2155
I am working on a project that need ON three switches remotely via IR tx and Rx. Tx frequency is 38khz and IR LED is used. TSOP1100 IR Receiver is used for Rx and I can make 40KHz "1"s and "0"s stream using pic according to the requirement.
My question is Rx TSOP1100 IR Receiver out put....
Is it generate negative plus or positive p
Elementary Electronic Questions :: 07-12-2009 13:20 :: thebrighter :: Replies: 0 :: Views: 1035
DEFINE OSC 20
CMCON=%00000111 'para el pic 16f628
VRCON = 0 ' A/D Voltage reference disabled
PR2 = 25 ' Set PWM for approximately 38khz
T2CON = %00000101 ' Timer2 ON + 1:1 prescale
TX_SERIAL VAR PORTA.0
RX_SERIAL VAR PORTA.2
LED_OPER1 VAR PORTB.0
Microcontrollers :: 07-30-2007 14:32 :: hassan1980 :: Replies: 3 :: Views: 5748
Take a look at the picture below ..
It shows IR receiver based on the picAXE-08 microcontroller ..
Using standard TV remote controller with 38khz IR transmitter and SONY-like set of commands you will be able to set/reset digital outputs ..
Bear in mind, that the picAXE-08 microcontroller is a (...)
Hobby Circuits and Small Projects Problems :: 03-17-2006 01:27 :: IanP :: Replies: 3 :: Views: 1911
I'm no pro at micro's yet, still stuck on my midi keyboard :( But heres what I think:
So, you're using IR. Those 38khz modules are a wonder, I got a range of 25m using one with high-output IR emitter!
The 16F628, if I'm not mistaken has hardware UAR/SCI. This could come in useful, I know you said decoding in software, but if you can
Microcontrollers :: 07-20-2005 00:55 :: Buriedcode :: Replies: 6 :: Views: 2246
Use TSOP ir demodulators from Vishay as receptors, with additional electronics, and pic based modulator ( merely +/- 38khz oscillator ) as emmiter.
Microcontrollers :: 05-07-2005 05:47 :: manu :: Replies: 3 :: Views: 875