-s --systemcode=systemcode    control a device with this systemcode
-u --programcode=programcode  control a device with this programcode
-t --on                       send an on signal
-f --off                      send an off signal

"devices": {
	"Lamp": {
		"protocol": [ "impuls" ],
		"id": [{
			"systemcode": 8,
			"programcode": 12
		}],
		"state": "off"
	}
},
"gui": {
	"Lamp": {
		"name": "TV Backlit",
		"group": [ "Lamps" ],
		"media": [ "all" ]
	}
}

GUI Settings

The default settings for a set of Impuls switches are SystemCode: 11111 and ProgramCode: 10000 (A), ProgramCode: 01000 (B) and ProgramCode: 00100 (C). This translates into the following pilight systemcode and unitcode: A) systemcode: 31, programcode: 1 B) systemcode: 31, programcode: 2 C) systemcode: 31, programcode: 4

This protocol sends 50 pulses like this

885 295 885 295
885 295 885 295
885 295 885 295
295 885 885 295
295 885 885 295
295 885 295 885
295 885 885 295
295 885 295 885
295 885 885 295
295 885 885 295
295 885 885 295
295 885 295 885
295 9735

It has no header and the last 2 pulses are the footer. These are meant to identify the pulses as genuine, and the protocol also has some bit checks to filter false positives. We don't use them for further processing. The next step is to transform this output into 12 groups of 4 pulses (and thereby dropping the footer pulses).

885 295 885 295
885 295 885 295
885 295 885 295
295 885 885 295
295 885 885 295

295 885 295 885
295 885 885 295
295 885 295 885
295 885 885 295
295 885 885 295

295 885 885 295
295 885 295 885

295 9735

If we now look at carefully at these groups you can distinguish three types of groups:

1. 295 885 295 885
2. 885 295 885 295
3. 295 885 885 295

1. The first group is defined by a low 1th and low 3rd pulse pulse, hence we call it low.
2. The second group has a high 1st and 3rd pulse, hence we call it med.
3. The final group has a low 1st and high 3rd pulse, hence we call it high.

We then get the following output:

MMMHH LHLHH H L

All M's and H's can be translated to 1. All L's can be translated to 0.

Each (group) of numbers has a specific meaning:

• Unit: 0 till 5
• ID: 6 till 10
• Check: 11 (inverse state)
• State: 12 (state)

11100 10100 1 0

• The SystemCode is defined as a binary number
• The ProgramCode is defined as a binary number
• The Check is always inverse state
• The State defines whether a devices needs to be turned On or Off

So this code represents:

• SystemCode: 7
• ProgramCode: 5
• Check: Inverse state
• State: Off

Another example:

• Unit: 0
• ID: 4
• Fixed: Inverse state
• State: On

00000 00100 0 1