RELAY12_ parameters

4 parameters in the RELAY12_ family. ArduCopter 4.7 only — other vehicles share many of these names but not always the same ranges or meanings.

RELAY12_DEFAULT

Relay default state

Should the relay default to on or off, this only applies to RELAYx_FUNC “Relay” (1). All other uses will pick the appropriate default output state from within the controlling function’s parameters. Note that if INVERTED is set then the default is inverted.

User level

Standard

Values

Value	Meaning
0	Off
1	On
2	NoChange

RELAY12_FUNCTION

Relay function

The function the relay channel is mapped to.

Values

Value	Meaning
0	None
1	Relay
3	Parachute
4	Camera

RELAY12_INVERTED

Relay invert output signal

Should the relay output signal be inverted. If enabled, relay on would be pin low and relay off would be pin high. NOTE: this impact’s DEFAULT.

User level

Standard

Values

Value	Meaning
0	Normal
1	Inverted

RELAY12_PIN

Relay pin

Digital pin number for relay control. Some common values are given, but see the Wiki’s “GPIOs” page for how to determine the pin number for a given autopilot.

Range	-1 to 1015
User level	Standard

Values

Value	Meaning
-1	Disabled
49	BB Blue GP0 pin 4
50	AUXOUT1
51	AUXOUT2
52	AUXOUT3
53	AUXOUT4
54	AUXOUT5
55	AUXOUT6
57	BB Blue GP0 pin 3
62	BBBMini Pin P8.13
101	MainOut1
102	MainOut2
103	MainOut3
104	MainOut4
105	MainOut5
106	MainOut6
107	MainOut7
108	MainOut8
113	BB Blue GP0 pin 6
116	BB Blue GP0 pin 5
1000	DroneCAN Hardpoint ID 0
1001	DroneCAN Hardpoint ID 1
1002	DroneCAN Hardpoint ID 2
1003	DroneCAN Hardpoint ID 3
1004	DroneCAN Hardpoint ID 4
1005	DroneCAN Hardpoint ID 5
1006	DroneCAN Hardpoint ID 6
1007	DroneCAN Hardpoint ID 7
1008	DroneCAN Hardpoint ID 8
1009	DroneCAN Hardpoint ID 9
1010	DroneCAN Hardpoint ID 10
1011	DroneCAN Hardpoint ID 11
1012	DroneCAN Hardpoint ID 12
1013	DroneCAN Hardpoint ID 13
1014	DroneCAN Hardpoint ID 14
1015	DroneCAN Hardpoint ID 15