Adafruit_NECremote lib not working with TSOP38238 and mini remote ctrl
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Adafruit_NECremote lib not working with TSOP38238 and mini remote ctrl

by eduino on Sun Feb 24, 2013 8:20 pm

Hey there,

My project is a servo-enabled, remote controllable heater button (and later on a full-fledged thermostat) since it tends to be pretty cold in my room during winter. But for now, I can't read the codes sent by the remote in the Serial monitor :'(

I am using a UNO board, a TSOP38238 and a mini remote controller bought from adafruit. I've downloaded the lib from Github (https://github.com/adafruit/Adafruit-NE ... ol-library) but I can't get the listener example working using a standard setup (sensor output to pin 2, sensor ground to GND and sensor vcc to +5V). Serial monitor endlessly display the "Timed out waiting!" error message.

I was not sure if IR reception was OK so I plugged in a LED to see if it blinks when receiving signal from the sensor and it does, hence the problem lies elsewhere ...

Picture:
http://imgur.com/uqTL7ld

Code:
/*************************************************** 
  This is an example for the Adafruit NEC Remote Control

  Designed specifically to work with the Adafruit NEC Remote Control
----> http://www.adafruit.com/products/389
  and IR Receiver Sensor
----> http://www.adafruit.com/products/157

  These devices use IR to communicate, 1 pin is required to  
  interface
  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.  
  BSD license, all text above must be included in any redistribution
 ****************************************************/
 

#include "Adafruit_NECremote.h"
 
// Connect a 38KHz remote control sensor to the pin below
#define IRpin 2
 
Adafruit_NECremote remote(IRpin);

void setup(void) {
  Serial.begin(9600);
  Serial.println("Ready to decode IR!");
}

int lastcode = -1;

void loop(void) {
  // You can set the listen() time out to 'n' seconds
  int c = remote.listen(1); // seconds to wait before timing out!
  // Or you can wait 'forever' for a valid code
  //int c = remote.listen(); // Without a #, it means wait forever

  if (c >= 0) {
    Serial.print("Received code #");
    Serial.println(c, DEC);
    lastcode = c;
  } else if (c == -3) {
    Serial.print("Repeat (");
    Serial.print(lastcode);
    Serial.println(")");
  } else if (c == -2) {
    Serial.println("Data error");
  } else {
    Serial.println("Timed out waiting!");
  }
}



Thanks for your help,
E.
eduino
 
Posts: 1
Joined: Sun Feb 24, 2013 8:01 pm

Re: Adafruit_NECremote lib not working with TSOP38238 and mini remote ctrl

by beercannon on Tue Feb 26, 2013 2:48 pm

See my thread here:
viewtopic.php?f=25&t=37457

You may be having the same problem I was.. that particular IR sensor is one that strips the 38k pulse and reports only the signal on/off pulses.
User avatar
beercannon
 
Posts: 85
Joined: Fri Nov 16, 2012 9:16 pm
Location: Pennsylvania, USA