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I/O for led

19roland70

I/O for led
February 25, 2016 05:15PM

Registered: 9 years ago
Posts: 34

I want to use a led for temp indicator.
Now I see this in the Marlin software:

// Temperature status LEDs that display the hotend and bet temperature.  
// If all hotends and bed temperature and temperature setpoint are < 54C then the BLUE led is on.
// Otherwise the RED led is on. There is 1C hysteresis.
//#define TEMP_STAT_LEDS

But which I/O ports must I use and how must I connect the led

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Dust

Re: I/O for led
February 25, 2016 06:19PM

Admin
Registered: 14 years ago
Posts: 7,224

pins are

STAT_LED_RED
STAT_LED_BLUE

Not defined in ramps, but is in pins_AZTEEG_X3, pins_AZTEEG_X3_PRO.h, pins_PRINTRBOARD.h and pins_RAMBO.h

So pick some free pins and add the above definitions into pins_RAMPS_13.h in correct section for your configuration

eg

#if ENABLED(TEMP_STAT_LEDS)
#define STAT_LED_RED 12 //Non-FastIO
#define STAT_LED_BLUE 10 //Non-FastIO
#endif