This kit contains most parts needed to build a USB reminder cap. Besides the kit you need batteries and you must 3d-print some parts.

Several times I left USB-stick in a clients computer. This inspired me to make the this reminder cap.

There is a micro controller in the cap that is started up when you take out the USB-plug. On startup it gives a single beep. After 5 minutes it gives a series of 7 beeps to alert you that the USB stick is still out of the cap. This series of beeps is repeated every minute.

Behind a small hole in the cap is a config button. With this button you can set the alarm time to any value between 1 minute and 2 hours.

The kit contains:

• programed microcontroller
• piezo speaker
• lackered wire
• nylon thread
• capacitor
• sticker
• micro switch
• tiny flex pcb
• insulation material

Not included in the kit:

• Batteries (3 X AG5)
• 3D printed plastic parts
• Hot melt glue and superglue
• solder