Bare PCB for DIY alarm clock/frequency counter
Designed by m1l3n in Switzerland
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Bare PCB for this DIY clock I wanted to create small and simple to build alarm clock, which could also be used in radio receiver projects. It can be configured to work as clock or AM/FM frequency cou…
Read More…Bare PCB for this DIY clock
I wanted to create small and simple to build alarm clock, which could also be used in radio receiver projects.
It can be configured to work as clock or AM/FM frequency counter for radio. It has the two needed inputs for the AM or FM frequency and two control inputs to select the mode:
clock or frequency counter the AM or FM radio receiver Five small tactile buttons are used to :
Set the time (when hold pressed and the buttons "Hours" and "Min" are toggled)
Set the alarm time - works in the same way as Time set button Hours - set hours Min - set minutes Alarm On/Off - activates/deactivates the alarm As alarm I use universal passive buzzer.
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