Configurable RGB Mixing Lamp in Full Color

This full color RGB mixing lamp is intended to control the room light according to the mood of the user.

The project is a standalone device which is fully configurable while providing cool ambient colors. It can be controlled dynamically through a standard bus system RS485. The RGB lamp modules are made stackable as it uses the Atmel ATmega8 platform. The LEDs are cheap, very bright, and easily available and can be dimmed using pulse width modulation (PWM) which is generated by the Atmel ATmega8 microcontroller. The PWM is very practical since it works well with digital controls and can easily set the needed duty cycle due to the ON/OFF nature. Duty cycle refers to the proportion of ON time to the regular interval or PERIOD of time wherein low power corresponds to a low duty cycle. PWM of a signal involves the modulation of duty cycle.

The two version of the firmware comes in C language and ASM languages. The word “fnordlicht” was termed for the room light used. There are 3 PCBs that comprise the fnordlicht while the MAX232 level shifter for RS232 was catered by the 4th PCB.

Rest of the project