Worksheet produced for the Summer Reading Challenge 2018. Attendees built a simple 555 timer based circuit to produce a beep every 6 - 7 minutes.
Activity was carried out in two 2 hour sessions each with 10 attendees in each.
Covered basic soldering skills and tool usage. Each kit worked out a roughly £1.50
Full files (including price list): https://github.com/heeed/beeping_annoying