The TPA3118 class D amplifier IC is a leap in terms of audio quality....
Extruder Fan for Creality 3D Ender-3.
Thermistor/sensor for the nozzle on Ender-3
Creality 3D T-nut for Z axis threaded rod.
This is a 10 pack of Biomedical Sensor Pads, disposable electrodes that can be used to measure EEG, ECG and EMG levels.
The WeevilEye is a through-hole soldering kit designed for the beginner. It has a low parts count so even young kids can easily complete it. Once it's put together the red LED "eyes" light up brighter or darker according to how much light is getting to the photosensor.