Added roomba example gist and comment about max pulse frequency of 16…

…6khz.

IRremote.cpp

@@ -8,7 +8,7 @@
  * Modified  by Mitra Ardron <[email protected]> 
  * Added Sanyo and Mitsubishi controllers
  * Modified Sony to spot the repeat codes that some Sony's send
- * Modified by Gaspard van Koningsveld to trim out IRrecv, simplify code, allow setting of IR LED pin, and make it compatible with the Spark Core v1.0 (STM32F103CB based)
+ * Modified by Gaspard van Koningsveld to trim out IRrecv, not using PWM anymore, allow setting of IR LED pin, and make it compatible with the Spark Core v1.0 (STM32F103CB based)
  *
  * Interrupt code based on NECIRrcv by Joe Knapp
  * http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
@@ -278,6 +278,7 @@ void IRsend::space(int time) {
 
 void IRsend::enableIROut(int khz) {
   // Enables IR output.  The khz value controls the modulation frequency in kilohertz.
+  // MAX frequency is 166khz.
   pinMode(irPin, OUTPUT);
   digitalWrite(irPin, LOW);
 

README.md

@@ -7,11 +7,13 @@ Modifications
 -------------
 
 * Trimmed out IRrecv (removed the decoding of IR signals. Thus you can only send IR codes with this lib. If you make the IRrecv part of the code copatible, please send a pull-request :) )
-* Removed the use of PWM. It now only uses digitalWrite() and delayMicroseconds() to make the IR pulses. Thus the maximum frequency of pulses is 166khz. (Most IR codes are 38khz so it's not a problem)
+* Removed the use of PWM. It now only uses digitalWrite() and delayMicroseconds() to make the IR pulses. Thus the maximum frequency of pulses is 166khz. (Most IR codes are 38khz so it's not a problem). Kudos to eflynch: [https://github.com/eflynch/sparkcoreiremitter/blob/master/ir_emitter/ir_emitter.ino](https://github.com/eflynch/sparkcoreiremitter/blob/master/ir_emitter/ir_emitter.ino)
 * Allows to set the pin of the IR led. (any A or D pin should work on the Spark Core)
 * Allows to make multiple instance of the IRsend class with different pins to control multiple IR leds.
 
 Usage examples
 --------------
 
-You can look at usages examples for sending on the original library: [https://github.com/shirriff/Arduino-IRremote/tree/master/examples](https://github.com/shirriff/Arduino-IRremote/tree/master/examples)
+You can look at usages examples for sending on the original library for various TVs: [https://github.com/shirriff/Arduino-IRremote/tree/master/examples](https://github.com/shirriff/Arduino-IRremote/tree/master/examples)
+
+I used it to control my Roomba using this gist: [https://gist.github.com/probonopd/5181021](https://gist.github.com/probonopd/5181021)