555 Monostable Timer Project — More than just a timer
  • The time can be varied with the variable resistor
  • Can be used with various trigger inputs
  • Battery powered
  • PCB has space for a transistor drive circuit to allow higher powered outputs to be added
  • Clear silkscreen text has been used to make construction simpler
  • Professional double-sided PCB pre-drilled with silkscreen and solder-resist
  • Blank PCBs are available
  • Unique training system is available
  • Suitable for Key Stages 2, 3 & 4 (ages 11 to 16)
  • Please note that this is a self build kit, it will need to be soldered
  • Documentation and PDF schematic available
UK buyers pay a maximum of £3.99 post and packing, the discount is applied at the checkout. Buyers outside of the UK please request a total to receive a post and packing discount. We aim to ship within 5 working days, if you need anything in a hurry please contact us prior to making your purchase. If you have any questions regarding post and packing or any other questions please contact us

Please note that this is a self build kit.  

Documentation is available online but printed material will not be supplied.  



Please follow this link to view our special 555 timer kit

Please follow this link to view our Beginners Electronics Prototyping Breadboard Kit PCB - 7 Full Kits