HVAC controller including LEDs for illuminating a display
In some examples, a device includes an analog display configured to indicate a current temperature and one or more temperature set Additionally, the device includes processing circuitry is configured to control a set of light-emitting diodes (LEDs) to emit one or more optical beams to reflect off of a projection ring onto the analog display. The one or more optical beams are a first color if the current temperature is lower than a set point temperature of the one or more set point temperatures. The one or more optical beams are a second color if the current temperature is greater than the set point temperature of the one or more set point temperatures.
1 . A device comprising:
a display configured to indicate a current temperature and one or more temperature set points;
a set of light-emitting diodes (LEDs); and
processing circuitry, wherein the processing circuitry is configured to:
control the set of LEDs to emit one or more optical beams to reflect off of a projection member,
wherein the one or more optical beams are a first color if the current temperature is lower than a set point temperature of the one or more set point temperatures, and
wherein the one or more optical beams are a second color if the current temperature is greater than the set point temperature of the one or more set point temperatures.
2 . The device of claim 1 , wherein the projection member is a projection ring.
3 . The device of claim 1 , wherein the device is a thermostat.
4 . The device of claim 1 , wherein the device is configured to control a heating, ventilation, and air conditioning system.
5 . The device of claim 1 , wherein the device is configured to control a security system.
6 . The device of claim 1 , wherein the device is configured to display information received from a water valve.
7 . A method comprising:
indicating, by a display, a current temperature and one or more temperature set points; and
controlling, by processing circuitry, a set of light-emitting diodes (LEDs) to emit one or more optical beams to reflect off of a projection member onto the display,
wherein the one or more optical beams are a first color if the current temperature is lower than a set point temperature of the one or more set point temperatures, and
wherein the one or more optical beams are a second color if the current temperature is greater than the set point temperature of the one or more set point temperatures.
8 . The method of claim 7 , wherein the projection member is a projection ring.