Arduino Hourglass Timer

A while ago I brought one of those $3 Hourglass Shape Flashing LED DIY Kits from eBay. While it is a nice kit to build, it really has no practical purpose other than to show off its animation of an hour glass. It is not designed as a timer. I wanted to make mine into something useful yet keep the animation. I created a custom board that contains an Arduino, two mercury switches to detect the hourglass orientation, a rotary encoder to set the time from 1 to 99 minutes and a piezo electric speaker. I used the PCB that came in the kit to hold the LEDs. The STC15W201S microcontroller is replaced with a 16 pin ribbon cable that connects to my custom Arduino board.

See "Hourglass Shape Flashing LED DIY Kits"
https://www.instructables.com/id/Hourglass-Shape-Flashing-LED-DIY-Kits/

Video
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https://youtu.be/0LKmR9BtNaw

Parts
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1x Hourglass Shape Flashing LED DIY Kit
1x ATMega328
1x 28pin IC Socket
1x 16pin IC Socket
2x 16pin IC Plugs
1x 50mm 16 way Ribbon Cable