Summary： My most recent share project
My latest project is a color-changing Pumpkin / Jack o'lantern light powered by a single 9-volt battery, cycling through five colors—red, yellow, blue, green, and orange—every five seconds using a 32,768 Hz crystal for precise timing. I used a plastic Jack o'lantern from last year; the circuit board fits where the original light was, with white interior paint and facing the LEDs to the rear for best effect. For real pumpkins, use a plastic container or electrical tape to protect the circuit board from moisture.
The idea came after receiving a 4060 binary divider chip in an assorted IC package and ordering 32,768 Hz crystals from Amazon, which come in ten packs. I planned to design a digital clock but decided to order boards from a shared project I liked; here’s the link: https://www.pcbway.com/project/shareproject/24_Hour_Digital_Clock_77a8b997.html
The clock is currently placed in an alcove within my living room. Additional crystals and chips served as inspiration for the development of the Pumpkin / Jack-o'-lantern light project. Initially, the color change interval was set to three minutes; however, I didn’t think trick-or-treaters would notice the color changing. I have constructed two versions featuring red, yellow, blue, green, and orange colors, as well as an alternative version utilizing purple instead of blue.
Find my project here: https://www.pcbway.com/project/shareproject/Pumpkin_Jack_o_lantern_light_aa2e3492.html
