(Incomplete - work in progress...) --- Mechanics ------------------------------------------------------------------- Qty. Name Size Comments * 12 Steel ball D=1.25mm (0.05") Precision of G10 or better. Can be sourced from small ball bearings * 1m PU stretch cord D=1mm e.g. 'Stretch Magic' or 'Magic String' * 70 Neodym Cylinder Magnet D=3mm h=4mm * 1m Brass Pipe OD=2mm ID=1mm * 12 M2 Screw M2x12mm, Counsersunk * 6 M3 Grub Screw M3x4 --- Electronics ------------------------------------------------------------------- Qty. Name Comments * 1 DC-DC Step Down Module 4.75-23V Step-Down Buck Converter Module * 1 (1N5819) OR (PMEG4010) Diode * 1 RaspberryPi Pico 2 * 4 MT6835 Magnetic Encoder Module * 3 TB6612FNG Driver * 3 10 μF Electrolytic Capacitor (Unconfirmed derived from MT6835 data sheet) * 3 0.1 μF Ceramic Capacitor 0603 (Unconfirmed derived from MT6835 data sheet) * 2 4.7k Resistor 0603 * 1 2 Pin Power Header * 4 4 Pin Header * 1 8 Pin Header * 3 NEMA 17 Stepper Motor