For a car project I’m looking for a way to control 2leds with 1 ecu pin.
In the current situation, the ecu output pin delivers 12V, and inside the ecu either a 1k or 2k resistor is used to control the output current. So the ecu can switch between the 2 values
A Led is connected to the output pin, and depending on the ECU state, the led is getting 6mA by the 2k resistor, or 12mA by the 1k resitor.
In the first situation the led will glow slightly, in the second state it will be brighter.
Now my plan is to replace the 1 led design by a 2 led configuration.
Is there a way to control 2 leds (1 turning on when the output is 6mA and the other when the output is 12mA? This by only using the ecu output signal and ground? So without using a connection to the battery?
In the current situation, the ecu output pin delivers 12V, and inside the ecu either a 1k or 2k resistor is used to control the output current. So the ecu can switch between the 2 values
A Led is connected to the output pin, and depending on the ECU state, the led is getting 6mA by the 2k resistor, or 12mA by the 1k resitor.
In the first situation the led will glow slightly, in the second state it will be brighter.
Now my plan is to replace the 1 led design by a 2 led configuration.
Is there a way to control 2 leds (1 turning on when the output is 6mA and the other when the output is 12mA? This by only using the ecu output signal and ground? So without using a connection to the battery?