Challenge: Wirelessly switch an electrical plugin socket via a USB interface.
Parts: old PICAXE-08M,
Cheap 433Mhz Modul,
Brennenstuhl Wireless Socket,
some Small parts.
Implementation: The code consists of a total of 24 bits + 1 sync bit at the end
A bit consists of an 0 and 1 sequence (Manchester)
0 bit 430 us on and 1150 us off (approx. 1/3)
1 bit 1150us on and 430 us off (approx. 3/1)
Examples:
Switch coding Brennenstuhl Wireless Socket
has two DIP switches:
1122334455 AABBCCDDxxofon
where switch on corresponds to 00 respectively
and switch off corresponds to 01.
Example:
Examples:
11 22 33 44 55 AA BB CC DD xx of on
01 01 01 00 01 00 01 01 01 01 00 01 A On
01 01 01 00 01 00 01 01 01 01 01 00 A Off
01 01 01 00 01 01 00 01 01 01 00 01 B On
01 01 01 00 01 01 00 01 01 01 01 00 B Off
The PIC-AXE 08M sends the 20 * ON signal as soon as it receives power via the USB interface. This is sent via a Cheap 433Mhz Modul to the radio socket and it switches on.
As soon as the USB interface is deactivated (e.g. TV goes off), this is noticed via PIN 4 (IN3) over the loop. The PIC-AXE 08M is still powered by the 2200uF capacitor. This is enough to send the OFF signal several times until the capacitor is empty. The radio socket goes out.
I connected the data line of the USB interface to a USB socket, so that the USB interface remains fully usable.
To send the suitable signal I used PULSOUT. But I didn't find a suitable command to realize the pauses in between. The 08M does not know a PAUSEUS command yet. Therefore I took PULSOUT and put it on pin 5 (Out2), which I don't use.
Parts: old PICAXE-08M,
Cheap 433Mhz Modul,
Brennenstuhl Wireless Socket,
some Small parts.
Implementation: The code consists of a total of 24 bits + 1 sync bit at the end
A bit consists of an 0 and 1 sequence (Manchester)
0 bit 430 us on and 1150 us off (approx. 1/3)
1 bit 1150us on and 430 us off (approx. 3/1)
Examples:
Code:
+-+ +-+ +---+ +-+ +-+
| | | | | | | | | |
| | | | | | | | | |
-+ +---+ +---+ +-+ +---+ +----
| 0 | 0 | 1 | 0 |syncSwitch coding Brennenstuhl Wireless Socket
has two DIP switches:
1122334455 AABBCCDDxxofon
where switch on corresponds to 00 respectively
and switch off corresponds to 01.
Example:
Code:
Switch Buttons
o o
o o o o o o o
1 2 3 4 5 A B C D11 22 33 44 55 AA BB CC DD xx of on
01 01 01 00 01 00 01 01 01 01 00 01 A On
01 01 01 00 01 00 01 01 01 01 01 00 A Off
01 01 01 00 01 01 00 01 01 01 00 01 B On
01 01 01 00 01 01 00 01 01 01 01 00 B Off
The PIC-AXE 08M sends the 20 * ON signal as soon as it receives power via the USB interface. This is sent via a Cheap 433Mhz Modul to the radio socket and it switches on.
As soon as the USB interface is deactivated (e.g. TV goes off), this is noticed via PIN 4 (IN3) over the loop. The PIC-AXE 08M is still powered by the 2200uF capacitor. This is enough to send the OFF signal several times until the capacitor is empty. The radio socket goes out.
I connected the data line of the USB interface to a USB socket, so that the USB interface remains fully usable.
To send the suitable signal I used PULSOUT. But I didn't find a suitable command to realize the pauses in between. The 08M does not know a PAUSEUS command yet. Therefore I took PULSOUT and put it on pin 5 (Out2), which I don't use.
Code:
;#picaxe 08m
;#######################################################################
;#
;# Anschlüsse am PICAXE 08M:
;# + 2200uF
;# USB Power +5V ----+->--+--||------------------------+--- 0V
;# | | +---U---+ |
;# | +-- + o|1 8|o 0V---------+
;# | 0V o|2 7|o |
;# | 0V o|3 6|o 1 RFCOUT |
;# +->--+---3 o|4 5|o 2 Dummy |
;# | +-------+ |
;# +------------------R47k------+
;
; Der Code besteht aus insgesamt 24 bits + 1 Sync-Bit am Ende
; Ein bit besteht aus einer an und aus Folge
; 0 bit 430 us an und 1150 us aus (ca. 1/3)
; 1 bit 1150us an und 430 us aus (ca. 3/1)
; Schaltercodierung brennenstuhl
;
; 1122334455AABBCCDDxxofon
; wobei Schalter auf on bzw. Taste jeweils 00 entspricht
; und Schalter auf off bzw. nicht gewählte Taste 01 entspricht
;
; Beispiele:
; 11 22 33 44 55 AA BB CC DD xx of on
; 00 01 00 01 01 00 01 01 01 01 00 01 A Ein
; 00 01 00 01 01 00 01 01 01 01 01 00 A Aus
; 00 01 00 01 01 01 00 01 01 01 00 01 B Ein
; 00 01 00 01 01 01 00 01 01 01 01 00 B Aus
; Hier:
;
;Example:
;Switch Buttons
; o o
;o o o o o o o
;1 2 3 4 5 A B C D
; 01 01 01 00 01 01 00 01 01 01 00 01 = B On
; 01 01 01 00 01 01 00 01 01 01 00 00 = B Off
symbol RFCOUT = 1
symbol RFD = 2
symbol H0 = 43
symbol L0 = 18
symbol H1 = 112
pause 300
; On
for b0 = 1 to 20
pulsout RFCOUT,H0 ;0
pulsout RFD,L0 ;
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0 ;
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ; sync Bit
pause 9
next b0
;*******************************************************************
; Beim Strom weg wird der VCC Eingang noch durch einen Kondensator gepuffert
; An pin3 liegt aber die direkte Spannung an und geht vorher auf 0
; dann wird mit der Restkapazität des Kondensator das aus Signal gesendet.
SCHLEIFE:
if pin3 = 1 then SCHLEIFE
;Off
for b0 = 1 to 50
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H1 ;1
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0 ;0
pulsout RFD,L0
pulsout RFCOUT,H0
pause 9
next b0
stop
