Efficient alarm clock with low electromagnetic radiation, big display and music player
thingiverse
The housing is being utilized by a clock, which features components from TEKO (D14). 3D-printed parts are used to secure the speaker and display. Another part conceals the metallic elements located at the back of the device. A distance holder and caps for rotary encoders are also included in the 3D-printed parts. Key characteristics of this DIY clock include: - A capacitive power supply that minimizes electrical smog. - A large and efficient 1.2" 4-digit 7-segment display (I2C) that provides clear visual information. - The Teensy 3.1 board, which boasts a 12 Bit DAC (SD-card wav player) and internal Real Time Clock (RTC). - An I2C class D amplifier that operates at an impressive 89% efficiency with an 8Ω speaker at 1.5 Watt. - A DCF77 receiver for precise timekeeping. - Two rotary encoders equipped with switches, allowing for easy and intuitive control. - The state machine is programmed using Arduino (teensyduino), making it simple to implement changes in the software. Additional information can be found at weigu.lu.
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