Some experiments on Radio Remote Controls - Cronologia

Renzo: /* Arduino and Radio Controller Sockets */

2021-05-06T08:04:13Z

Arduino and Radio Controller Sockets

Renzo: /* Raspberry PI TX for avidsen sockets using GPIO and a tx module */

2019-04-07T14:06:25Z

Raspberry PI TX for avidsen sockets using GPIO and a tx module

Renzo: /* Raspberry PI TX for mm53200 using GPIO and a tx module */

2019-04-07T14:06:07Z

Raspberry PI TX for mm53200 using GPIO and a tx module

Renzo: /* Raspberry PI TX for mm53200 using GPIO and a tx module */

2019-04-07T14:03:10Z

Raspberry PI TX for mm53200 using GPIO and a tx module

Renzo: /* Raspberry PI TX for avidsen sockets */

2019-04-07T14:02:44Z

Raspberry PI TX for avidsen sockets

Renzo: /* Arduino and mm53200 */

2016-06-04T16:28:03Z

Arduino and mm53200

Renzo: /* Raspberry PI TX for avidsen sockets */

2016-06-04T16:22:25Z

Raspberry PI TX for avidsen sockets

Renzo: /* Raspberry PI TX for mm53200 */

2016-06-04T16:18:04Z

Raspberry PI TX for mm53200

Renzo: /* Raspberry PI TX for mm53200 */

2016-06-04T16:16:57Z

Raspberry PI TX for mm53200

Renzo: /* Arduino and mm53200 */

2016-06-04T15:29:47Z

Arduino and mm53200

@@ Riga 23: / Riga 23: @@
 TX has three pins
 (left to right watching the component side of the PCB, there are clear labels):
-    DATA <-> Arduino GPIO 2
+    DATA <-> Arduino GPIO 10
     Vcc  <-> Arduino 5v
     GND  <-> Arduino GND
@@ Riga 30: / Riga 30: @@
 (left to right watching the component side of the PCB, the labels are printed on the reverse side of the PCB)
     Vcc  <-> Arduino 5v
-    DATA <-> Arduino GPIO 10
+    DATA <-> Arduino GPIO 2
     DATA <-> (the two DATA pins are connected together, so either can be used).
     GND  <-> Arduino GND

@@ Riga 442: / Riga 442: @@
 The code is here: [http://www.raspibo.org/renzo/myRCgpio.c http://www.raspibo.org/renzo/myRCgpio.c]
-Compile it on your Raspberry PI run it as follows:
+Compile it on your Raspberry PI and run it as follows:
 <pre>
 gcc -o myRCgpio myRCgpio.c

@@ Riga 429: / Riga 429: @@
 The code is here: [http://www.raspibo.org/renzo/mm53200.gpio.c http://www.raspibo.org/renzo/mm53200.gpio.c]
-Compile it on your Raspberry PI run it.
+Compile it on your Raspberry PI and run it.
 <pre>

← Versione meno recente		Versione delle 14:03, 7 apr 2019
Riga 424:		Riga 424:

	The following picture shows the wirings:		The following picture shows the wirings:
		+
	[[File:pi433tx.jpg\|450px]]		[[File:pi433tx.jpg\|450px]]

← Versione meno recente		Versione delle 14:02, 7 apr 2019
Riga 411:		Riga 411:

	the second command turns on the socket (system 11111, D=00010), and the third turns the same socket off.		the second command turns on the socket (system 11111, D=00010), and the third turns the same socket off.
		+
		+	== Raspberry PI TX for mm53200 using GPIO and a tx module ==
		+
		+	The wiring between the Raspberry PI and a TX module is:
		+	<pre>
		+	TX has three pins
		+	(left to right watching the component side of the PCB, there are clear labels):
		+	DATA <-> RPi GPIO 24
		+	Vcc <-> RPi 5v
		+	GND <-> RPi GND
		+	</pre>
		+
		+	The following picture shows the wirings:
		+	[[File:pi433tx.jpg\|450px]]
		+
		+	The code is here: [http://www.raspibo.org/renzo/mm53200.gpio.c http://www.raspibo.org/renzo/mm53200.gpio.c]
		+
		+	Compile it on your Raspberry PI run it.
		+
		+	<pre>
		+	gcc -o mm53200.gpio mm53200.gpio.c
		+	sudo ./mm53200.gpio 101010101010
		+	</pre>
		+
		+	== Raspberry PI TX for avidsen sockets using GPIO and a tx module ==
		+
		+	Using the same wiring explained above it is possible to drive the radio controlled sockets.
		+
		+	The code is here: [http://www.raspibo.org/renzo/myRCgpio.c http://www.raspibo.org/renzo/myRCgpio.c]
		+
		+	Compile it on your Raspberry PI run it as follows:
		+	<pre>
		+	gcc -o myRCgpio myRCgpio.c
		+	sudo ./myRCgpio 11111 00010 1
		+	sudo ./myRCgpio 11111 00010 0
		+	</pre>

@@ Riga 335: / Riga 335: @@
 When a signal of a remote control using MM53200 encoding is received its code appears on the terminal.
 To send a code, just type in a 12 bit binary number (no echo) followed by CR,
 ctrl-v turns on and off the "verbose mode": it prints some more log messages.
 ctrl-b starts a brute force scan of the codes. If you type a code followed by ctrl-b the scan starts from

← Versione meno recente		Versione delle 16:22, 4 giu 2016
Riga 381:		Riga 381:

	== Raspberry PI TX for avidsen sockets ==		== Raspberry PI TX for avidsen sockets ==
		+
		+	The disclaimer worth to be repeated:
		+	''Please note that this is just a proof of concept. Without additional filters this program may generate interferences in restricted bands. I take no responsability for the problems created by an improper use of this program. The usage of this program might be illegal in your country or might require a HAM-radio license.''
		+
		+	In fact, the program uses the harmonics generated by the square wave of a frequency programmable clock signal.
		+	Square waves generate very strong harmonics. A filter would be required to select just the required frequency.
		+
		+	It is well explained in this site: [http://www.skagmo.com/page.php?p=projects/22_pihat http://www.skagmo.com/page.php?p=projects/22_pihat]
		+
		+	The code is here: [http://www.raspibo.org/renzo/myRC.c http://www.raspibo.org/renzo/myRC.c].
		+
		+	Compile it on a Raspberry PI and connect a 17.3 cm wire on GPIO4.
		+
		+	<pre>
		+	gcc -o myRC myRC.c
		+	sudo ./myRC 11111 00010 1
		+	sudo ./myRC 11111 00010 0
		+	</pre>
		+
		+	the second command turns on the socket (system 11111, D=00010), and the third turns the same socket off.

@@ Riga 373: / Riga 373: @@
 one fourth of the wave length.
 <source lang=C>
 </source>
 == Raspberry PI TX for avidsen sockets ==

← Versione meno recente		Versione delle 16:16, 4 giu 2016
Riga 346:		Riga 346:

	== Raspberry PI TX for mm53200 ==		== Raspberry PI TX for mm53200 ==
		+
		+	Following this series of experiments on radio remote controls I generate MM53200 encoded signals using a Raspberry PI ''and nothing else'' but a wire (used as an antenna).
		+
		+	I got inspiration from the code ''Minimal clock access'' published here: [http://abyz.co.uk/rpi/pigpio/examples.html http://abyz.co.uk/rpi/pigpio/examples.html].
		+
		+	''Please note that this is just a proof of concept. Without additional filters this program may generate interferences in restricted bands. I take no responsability for the problems created by an improper use of this program. The usage of this program might be illegal in your country or might require a HAM-radio license.''
		+
		+	In fact, the program uses the harmonics generated by the square wave of a frequency programmable clock signal.
		+	Square waves generate very strong harmonics. A filter would be required to select just the required frequency.
		+
		+	It is well explained in this site: [http://www.skagmo.com/page.php?p=projects/22_pihat http://www.skagmo.com/page.php?p=projects/22_pihat]
		+
		+	The code is here: [http://www.raspibo.org/renzo/mm53200.c http://www.raspibo.org/renzo/mm53200.c].
		+
		+	Compile it on a Raspberry PI and connect a 17.3 cm wire on GPIO4.
		+
		+	<pre>
		+	gcc -o mm53200 mm53200.c
		+	sudo ./mm53200 100100100100
		+	</pre>
		+
		+	the second command sends the MM53200 code. The range may be shorter than a real remote, but the command should work as a remote control having the same configuration of on-off dip-switches depicted in the binary parameter.
		+
		+	It is possible to change the frequency and operate remote controlled devices on 315Mhz or 330Mhz.
		+	In the code there are optional lines commented out to change the frequency. THe length of the antenna should be changed consistently to be
		+	one fourth of the wave length.
		+	<source lang=C>
		+	</source>

	== Raspberry PI TX for avidsen sockets ==		== Raspberry PI TX for avidsen sockets ==

@@ Riga 343: / Riga 343: @@
 required frequencies.
-'''Please note that a misuse of the code above can be considered to be a crime. Technical ability and legal possibility are
+'''Please note that a misuse of the code above can be considered to be a crime. Technical ability and legal possibility are independent concepts (otherwise nobody would be allowed to sell knives)'''
 == Raspberry PI TX for mm53200 ==
 == Raspberry PI TX for avidsen sockets ==