Working on the final Space Rocks (i)

The components for the second two Space Rocks needed to take up less space. In the case of Undarum, the amplifier was too large. Shown here is the circuit on a new PCB (version 3) using an Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302), which has a much smaller footprint and height than the previous self-assembly amplifier kit I was using.

Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302)
Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302)
Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302), speaker and PCB
Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302), speaker and PCB
Adafruit Mono 2.5W Class D Audio Amplifier (PAM8302), speaker and PCB in action

Space Rocks – first casts

A series of photos showing the first attempts at casting the Space Rocks in Jesmonite, along with some further 3D printed parts to hold the circuitry and electronics.