This post shows how to build Jaycar’s JIMINI THE CRICKET DIY KIT- PROJECT SC2 #14. It takes around half an hour to build this kit. It is basically a sound sensor.
When there is a noise/sound close to the electret microphone, the circuit turns on the two LEDs and produces a chirping sound.
Watch the video below to see all the assembly steps:
See all the images to get ideas for assembling the kit:
Download Jaycar’s Short Circuits Volume 1, 2 and 3: