TechCrate 002 — Police Siren

SKU: TC-V002-EXPERIMENT | Model: TC-V002-EXPERIMENT
$20.99
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Product Description

Build a two-tone police siren with two 555 timer chips and an 8-ohm speaker. Explore how one timer changes the tone produced by the other.

Experiment kit contents
  • 555 timer chips
  • 1K resistors
  • 10K resistors
  • 33K resistor
  • 100K resistor
  • 0.1µF (104) capacitor
  • 10µF capacitor
  • 100µF capacitor
  • 1000µF capacitor
  • 8-ohm speaker
From your Starter Kit

Breadboard, 9V battery, Battery snap connector, Jumper wires.

Subscriber instructions PDF · Build video and customer files

Optional — go further

Optional: compare the timing resistor values with power disconnected and explore how they relate to the siren tones. The complete build and its checks work without a meter.

ProTechTrader Large Screen Digital Multimeter PDM-711

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