Robot Arm Blueprints
Robot Arm Blueprints
Robot Arm Blueprints
Print it, build it and program it. A 4-axis robot arm with a gripper, explained step by step, screw by screw.
The real arm: printed, built and moving.
Move each axis
Gestures
View
The real 3D model of the arm you will build. Try it.
Assembly video
Watch the full build.
The shopping list, the printing, every screw, the wiring and the programming, in one video.
10 minutes · English · The full version is included in the download.
No hunting for parts
Every part is on Amazon.
Servos, bearings, screws, power supply and cables. The shopping list links every item, so you can order everything in a few minutes.
What is in the pack
Everything you need.
Nothing to guess.
Tap any item to see what it includes.
Learn and build
🎬Assembly videoStep by step
The full build on video: the shopping list, the 3D printing, every screw of the assembly, the wiring, programming the board and the first moves.
📘Assembly manualPDF
13 illustrated pages: tools, every printed part, 6 assembly steps with every screw named, the wiring diagram, first power-on and troubleshooting.
🛒Shopping listAmazon
Every motor, bearing, screw and cable with its quantity and a direct Amazon search link. About $120 in parts. Opens in Excel or Google Sheets.
🖨️3D files for any 3D printerSTL + 3MF
11 parts already turned the right way up for printing, plus 6 ready-made print plates for 256 mm beds. About 630 g of PLA or PETG. Works on any FDM printer.
⚙️Print guide
Layer height, walls, infill, and exactly which parts need supports.
🧩2 bonus heads
A parallel gripper with steel guide rods and a camera mount for the DJI Osmo Pocket 3. Both swap at the wrist in seconds.
Program and play
💻Firmware + control appMac & Windows
Ready-to-flash firmware for the SGP Card Joker or any ESP32-S3 with a PCA9685 servo board. The app shows the arm in live 3D: sliders, drag the tip, 9 gestures, a 30-second dance and calibration.
🔌Wiring diagram
Exactly which wire goes where: controller, servo driver, the five servos and the power supply.
The arm
Big enough to be useful.
≈ 350 mm reach
From the shoulder to the tip of the gripper.
150 g payload
With the arm fully stretched.
4 axes + gripper
Base, shoulder, elbow, wrist and claw.
5 metal-gear servos
20 kg on the shoulder and elbow.
SGP Card Joker brain
Or any ESP32-S3 + PCA9685 board.
≈ 630 g of filament
PLA or PETG, any FDM printer.
Before you buy
Please read.
Build files only. No commercial rights.
You are buying the manufacturing files for your own personal use. Commercial rights are not included: you may not sell the files, printed parts or assembled arms, and you may not share or redistribute the files.
Some experience is needed.
You should be comfortable with 3D printing, small hand tools, fitting heat-set inserts with a soldering iron, wiring simple electronics and uploading a program to a microcontroller. The manual and the video guide you step by step, but they do not replace these basic skills.
Build and use at your own risk.
We are not responsible for incorrect assembly, misuse or modifications, or for any damage or injury caused by building or using the arm. It has moving parts: keep fingers clear while it is powered and supervise minors.
DIGITAL DOWNLOADYou receive the files (video, PDF manual, shopping list, 3D files and software), not a physical product. Servos, electronics, screws and filament are not included. Personal, non-commercial use only.