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diff --git a/rf433rcv/teensy/example.c b/rf433rcv/teensy/example.c
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+++ b/rf433rcv/teensy/example.c
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+/* Teensy RawHID example
+ * http://www.pjrc.com/teensy/rawhid.html
+ * Copyright (c) 2009 PJRC.COM, LLC
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above description, website URL and copyright notice and this permission
+ * notice shall be included in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <avr/io.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include "usb_rawhid.h"
+#include "analog.h"
+
+#define CPU_PRESCALE(n)	(CLKPR = 0x80, CLKPR = (n))
+
+volatile uint8_t do_output=0;
+uint8_t buffer[64];
+
+int main(void)
+{
+	int8_t r;
+	uint8_t i;
+	uint16_t val, count=0;
+
+	// set for 16 MHz clock
+	CPU_PRESCALE(0);
+
+	// Initialize the USB, and then wait for the host to set configuration.
+	// If the Teensy is powered without a PC connected to the USB port,
+	// this will wait forever.
+	usb_init();
+	while (!usb_configured()) /* wait */ ;
+
+	// Wait an extra second for the PC's operating system to load drivers
+	// and do whatever it does to actually be ready for input
+	_delay_ms(1000);
+
+        // Configure timer 0 to generate a timer overflow interrupt every
+        // 256*1024 clock cycles, or approx 61 Hz when using 16 MHz clock
+        TCCR0A = 0x00;
+        TCCR0B = 0x05;
+        TIMSK0 = (1<<TOIE0);
+
+	while (1) {
+		// if received data, do something with it
+		r = usb_rawhid_recv(buffer, 0);
+		if (r > 0) {
+			// output 4 bits to D0, D1, D2, D3 pins
+			DDRD = 0x0F;
+			PORTD = (PORTD & 0xF0) | (buffer[0] & 0x0F);
+			// ignore the other 63.5 bytes....
+		}
+		// if time to send output, transmit something interesting
+		if (do_output) {
+			do_output = 0;
+			// send a packet, first 2 bytes 0xABCD
+			buffer[0] = 0xAB;
+			buffer[1] = 0xCD;
+ 			// put A/D measurements into next 24 bytes
+			for (i=0; i<12; i++) {
+				val = analogRead(i);
+				buffer[i * 2 + 2] = val >> 8;
+				buffer[i * 2 + 3] = val & 255;
+			}
+			// most of the packet filled with zero
+			for (i=26; i<62; i++) {
+				buffer[i] = 0;
+			}
+			// put a count in the last 2 bytes
+			buffer[62] = count >> 8;
+			buffer[63] = count & 255;
+			// send the packet
+			usb_rawhid_send(buffer, 50);
+			count++;
+		}
+	}
+}
+
+// This interrupt routine is run approx 61 times per second.
+ISR(TIMER0_OVF_vect)
+{
+	static uint8_t count=0;
+
+	// set the do_output variable every 2 seconds
+	if (++count > 122) {
+		count = 0;
+		do_output = 1;
+	}
+}
+
+
+