The 555 Astable/Monostable PCB project has been designed specifically to support and integrate with teaching schemes for Key Stages 3 & 4. Instruction details are available and are designed to be photocopied for class use. * The kit is a timing circuit, which can be used to switch devices or circuits on and off * Knowledge, skills and understanding can be developed in: component recognition and purpose; PCB circuit assembly and soldering; system and circuit principles; signal tracing and fault finding; product design * The kit can be used for both class teaching or for individual project work * All components, including the PCBs, are provided * The kit includes: resistors and capacitors, NE555 timer, switches and preset resistors, LEDs, wire PCB and PP3 battery clip * Empty PCBs are also available in packs of 5 * Kit contains components for 5 circuits * Suitable for Key Stages 3 & 4 (ages 11 to 16) Note: Each kit requires 1x PP3 battery (not included). https://elecena.pl/product/27206772/rapid-555-timer-astable-monostable-project-pack-of-5 2024-11-10 https://elecena.pl/product/27206772/rapid-555-timer-astable-monostable-project-pack-of-5 2026-02-17