4. 24 x Perspex / acrylic blocks in 2 x 12 sets held together with threaded rods and nuts (each set of 12 has 2 LED strips hotglued to the back so that they light up the blocks).
5. A 60cm x 40cm stainless steel shelf to sit the blocks on and reflect the light back.
6. Powered by 12000mAh External Battery Pack (PowerGen Power Bank Backup USB 5v Charger) with 1000uf electrolytic capacitor across +ve / -ve to protect strips when powering up. This avoids using a mains adapter and needing to be near a socket.
Electret Microphone Amplifier – MAX9814 with Auto Gain Control: Add an ear to your project with this well-designed electret microphone amplifier with AGC. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX9814, a specialty chip that is designed for amplifying electret microphones in situations where the loudness of the audio isn’t predictable. (read more)
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.