Masterpiece Logo Masterpiece

Budget Overview

We tracked every mechanical, electrical, and fabrication purchase for Masterpiece in a shared spreadsheet. Some components came from shop scrap so we separate bought parts from found parts below.

BOM

Date Ordered Part Name Purpose Status Total Cost
10/28/25 N42 Mini Neodymium Magnets 6 mm × 2 mm Attach piece to end effector Bought $10.61
11/4/25 500 mm Linear Rail X-axis gantry rail Bought $29.99
11/4/25 Nema 17 Stepper Motor (2×) Gantry motors Bought $19.98
11/4/25 GT2 Timing Pulleys Pull belts using steppers Bought $6.99
11/4/25 5 Meter GT2 Belt (2×) Move end effector with stepper motion Bought $14.62
11/4/25 Taxes Sales tax for 11/4 order Bought $4.47
11/4/25 M3 Assorted Screws Connect all gantry parts together Bought $7.43
11/4/25 M3 T-Nuts Screw into M3 screws Bought $7.43
11/5/25 600 mm Linear Rail (2×) Y-axis gantry rail Bought $65.98
11/5/25 Smooth GT2 Pulleys Idler pulleys for CoreXY Bought $11.99
11/5/25 Taxes Sales tax for 11/5 order Bought $4.87
11/19/25 More M3 Hardware Additional hardware for gantry build Bought $7.64
11/21/25 10 kΩ Resistors (150×) Pull-up resistors for hall effect sensors Bought $2.85
11/21/25 Raspberry Pi 4B Controls the gantry end effector Found $60.00
11/21/25 Arduino Uno R3 Reads hall effect sensor inputs Found $27.60
11/21/25 Aluminum Extrusions Frame for the gantry Found $41.25
11/21/25 0.1 µF Capacitors (150×) Noise filtering for hall effect sensors Bought $14.15
11/21/25 TB6600 Stepper Driver Drives the gantry stepper motors Found $15.99
11/21/25 Limit Switches (2×) Zeroing gantry and defining bounds Found $5.98
11/21/25 12 V 2 A Power Supply Powering Arduino Found $7.89
11/21/25 5 V 3 A Power Supply Potentially powering PCB Bought $9.90
11/21/25 Raspberry Pi Power Supply Powering Raspberry Pi Found $18.19
11/21/25 9 V 1 A Power Supply Alternate Arduino power Found $8.95
11/25/25 Custom PCBs (10×) 5 IO expander boards + 5 hall sensor boards Bought $93.41
11/25/25 IO Expanders (10×) IO expander chips for sensor board Bought $16.20
11/25/25 Hall Effect Sensors (140×) Piece position sensing under each square Bought $59.04
11/25/25 TowerPro MG92B Servo Controls magnet lift mechanism Found $8.00
11/25/25 Wood Board Playing surface for the chessboard Bought $10.20
11/25/25 PLA Filament (2 spools) All 3D-printed parts Found $27.98
11/25/25 Wood Frame Add visual flair and reduce bowing of the chessboard Found $5.34
11/25/25 Side Panels Conceal all internal components Found $1.92
11/25/25 LEDs (2x) Show who's turn it is (black or white) Found $0.63
11/25/25 Surge Protector Consolidate all plugs into one wire Bought $13.92
11/25/25 Spray Paint Paint Wood Frame Found $14