This kit is perfect for GCSE students needing to use a 555 timer in its astable mode, where it produces a square wave output. The frequency of which is adjustable via the variable resistor. The board has a choice of two outputs. The logic output can be used to drive another IC or a speaker can be connected so the tone is heard (e.g. a door bell). The push button switch connects to the reset line such that the IC is only active when the button is pressed. Features: * The 555 Timer Astable (Tone Generator) Kit produces a square wave output. * The frequency of the aquare wave is adjustable via the variable resistor. Contents: * 1 x 555 Timer IC. * 1 x 8 Pin IC Holder. * 1 x 3.3KΩ Resistor. * 1 x 10KΩ Resistor. * 1 x 47KΩ Potentiometer. * 2 x 10nF Ceramic Capacitors. * 1 x BC547 NPN Transistor. * 1 x Push To Make Switch. * 1 x PP3 Clip Lead. * 1 x 3AA Battery Holder. * 0.5m Connecting Wire * 1 x Tone Generator PCB Dimensions: * PCB Length: 40mm. * PCB Width: 40mm. Requires: * 3 x AA Batteries. * Soldering Iron. * Solder. * Wire Cutters. * Wire Strippers. Resources: * Build Instructions. * Teaching Resources. Note: * This kit requires soldering. * Requires x 3 x AA Batteries. and depending upon desired use a speaker. This product is designed and manufactured in the UK by Kitronik. https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-01-23 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-02-20 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-02-21 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-02-23 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-02-24 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-02-25 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-03-03 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-03-05 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-03-17 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-03-18 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-03-22 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-04-20 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2025-09-27 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2026-02-21 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2026-02-23 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2026-03-19 https://elecena.pl/product/27744154/kitronik-555-timer-astable-tone-generator-kit 2026-04-12