Build guides

Print it. Build it. Run it.

Thirteen manuals take you from the shopping list to a packed kit. Every printed-part table is generated from the CAD manifest, so quantities and orientations always match the files you download.

55distinct parts · 127 pieces
≈ 1.3 kgPLA, 0.2 mm layers
256 mmP1S bed — nothing longer than 150 mm
0soldering for the student
00 · Parts to buyComplete shopping list with Amazon and JLCPCB sources
PDF · 82 KB
01 · Printing planPlates, orientations, infill — all 55 parts on a P1S
PDF · 85 KB
02 · Rail, feet, end piecesJoining segments, feet, the end cap and spring ends
PDF · 60 KB
03 · CartBearing stack, halves, dowels, encoder module, Hub
PDF · 73 KB
04 · Hub electronicsBattery, board, enclosure, buttons and LEDs
PDF · 69 KB
05 · Encoder and photogatesAS5600 module, magnets, fork wiring
PDF · 57 KB
06 · Marble launcherPlunger, barrel, key, base and gate bar, step by step
PDF · 1.3 MB
07 · Rotation, pulley, clampSpindle block, disc, pulley end, table clamp
PDF · 60 KB
08 · ForceScale platform, hook and the force cart
PDF · 64 KB
09 · Springs, stand, torque balanceSpring ends, stand, pivot and saddle
PDF · 567 KB
10 · Rolling discThe roller and the shifted-CoM lab
PDF · 69 KB
11 · Masses and small partsHangers, nuts, nickels, cord, bands
PDF · 56 KB
12 · PackingHow a full kit fits a 250 × 190 × 140 mm box
PDF · 117 KB

All manuals, Markdown + PDF (.zip)

Step figures

The launcher, step by step.

From manual 06. Every manual with a tricky assembly has figures like these rendered straight from the CAD.

Launcher step 1
Step 1 · plunger and spring
Launcher step 2
Step 2 · lower body
Launcher step 3
Step 3 · upper body
Launcher step 4
Step 4 · trigger key
Launcher step 5
Step 5 · pivot base
Launcher step 6
Step 6 · gate bar and forks
Launcher tilted to 45°
Tilted to the 45° detent
Torque balance step 4
Torque balance · clips, hangers and stick
Firmware and dashboard

Flash it over USB-C.

The Hub runs one Arduino sketch with no third-party libraries. Board ESP32C3 Dev Module, USB CDC On Boot: Enabled, partition Huge APP; hold BOOT and tap RESET if the port does not appear. The dashboard is a single HTML file: open it in Chrome or Edge, connect over Bluetooth or USB, record runs, drag-select a slope, export CSV.

pickle_hub.ino · firmware 1.2Open the Hub Dashboard onlineDashboard 1.3 (.html)Firmware README

Rather not print?

We print, pack and test every kit. The guides come printed in the box.

Buy the kitOr build it yourself — free files