Face screen
5inch_displayThe 5 inch screen that is the face, behind the window at the front of the head.
Model5" display
2026
Desktop AI Humanoid
Every part below is clickable. Open one to see what it is and where it sits. Like Nuvi, this robot was made for Arduino: a desktop humanoid built around the VENTUNO Q, the board that pairs a Qualcomm processor for AI with a microcontroller for real-time motor control. Its name is Neo. It sees, listens, talks and learns, and all of it runs on the robot itself: no cloud, no internet. The upper body stands on a base that holds the power supply. The head turns and tilts on the neck, the arms move from the shoulder down to the wrist, and each hand closes two fingers. Through a window in the chest you can see the board at work.
FilesOpen source project: the 3D models and the code will be published on Arduino Project Hub.
72cm tall, from the base to the top of the head
12smart servos in the neck and arms
0cloud services: everything runs on board
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Components
Every printed part, with its function and print settings.
Shoulder bearing
65x50x7The ball bearing where the shoulder meets the torso.
Model65 × 50 × 7 mm
Arduino VENTUNO Q
arduino_ventuno_qThe main board, at the front of the torso, behind the chest window. A Qualcomm Dragonwing processor for vision and language models, and an STM32 microcontroller for real-time control, on one board of 16 × 10 cm.
ModelArduino VENTUNO Q
Product pagestore.arduino.cc
Back cover
back_coverCloses the torso from behind.
MaterialPLA
Shoulder bearing spacer, outer
ball_bearing_ext_spacerSits on the outside of the shoulder bearing.
MaterialPLA
Arm rotation bearing, outer race
ball_bearing_outer_btm_first_arm ×3Halfway down the upper arm, where the arm turns on itself.
MaterialPLA
Base plate
baseThe plate the robot stands on.
MaterialPLA
Board spacers
board_spacer ×5Keep the board off the plate.
MaterialPLA
Base cover
bottom_base_coverCloses the bottom of the hips, on top of the base plate.
MaterialPLA
Upper arms, bottom
btm_first_arm ×3The lower half of the upper arm, down to the elbow.
MaterialPLA
Upper arm back covers
btm_first_arm_cover ×3Close the lower half of the upper arms from behind.
MaterialPLA
Torso shell
bustThe body of the robot: the board, the servo driver and the shoulder servos sit inside it.
MaterialPLA
Chest camera
cameraIn the middle of the chest, below the neck: it recognises the objects you hand Neo and sees what the hands are about to take.
ModelCamera module
Camera holder
camera_holderHolds the chest camera in the middle of the chest.
MaterialPLA
Head camera supports
camera_support ×3Two pieces at the top of the face, above the screen: they hold the camera in the head, the one that follows people.
MaterialPLA
Capacitor holder
capacitor_supportIn the lower part of the torso.
MaterialPLA
Electronics plate
components_holderThe plate behind the main board that carries the servo driver.
MaterialPLA
Forearm covers, outer
cover_color_forearm ×3Close the forearms on the outer side.
MaterialPLA
Forearm covers, inner
cover_forearm ×3Close the forearms on the side facing the body.
MaterialPLA
Servo driver board
digital_servo_shieldTurns the serial line of the main board into the bus the servos share. It sits on the plate behind the board.
ModelSerial bus servo driver board
Screen window
display_coverThe thin plate in front of the face screen.
MaterialPLA
Distance sensors
distance_modulesTwo sensors across the chest, one on each side of the camera.
ModelArduino Modulino Distance
Fingers
finger ×5Two per hand.
MaterialPLA
Finger pads
finger_cover ×5Cover the inner face of each finger, the side that grips.
MaterialPLA
Upper arms, top
first_arm ×3The top of the upper arm, just below the shoulder.
MaterialPLA
Upper arm caps
first_arm_cover ×3Close the top of the upper arms.
MaterialPLA
Arm rotation bearing, inner race, top
first_arm_inside_ball_bearing ×3Halfway down the upper arm, where the arm turns on itself.
MaterialPLA
Forearms
forearm ×3From the elbow to the wrist.
MaterialPLA
Wrist covers
forearm_back_cover ×3Close the back of the forearm at the wrist.
MaterialPLA
Elbow servo spacer
forearm_servo_spacerSits next to the elbow servo.
MaterialPLA
Wrist servo plates
forearm_servo_support ×3Hold the servo at the bottom of the forearm.
MaterialPLA
Hands
hand ×3The palm the two fingers are hinged to.
MaterialPLA
Hand servo board
hand_board_servoIn the torso, next to the main board.
ModelPCA9685 16-channel PWM driver
Hand servo
hand_servoInside the hand, where the fingers are hinged.
ModelMicro servo
Head couplers
head_coupler ×8Small pieces along the middle of the head, front, top and back, where the two halves meet.
MaterialPLA
Back of the head
head_coverCloses the head from behind.
MaterialPLA
Head shell
head_sx ×3The two halves of the head, left and right, closed around the face screen.
MaterialPLA
Head servo arms
headservo_arm ×3The two arms on either side of the head servo.
MaterialPLA
Hips
hipsThe lower body: the power supply sits inside it.
MaterialPLA
Hips back cover
hips_back_coverCloses the hips from behind and carries the power inlet and the stop button.
MaterialPLA
Arm rotation bearing, inner race, bottom
inside_ballbearing_btm_first_arm ×3Halfway down the upper arm, where the arm turns on itself.
MaterialPLA
Shoulder bearing spacer, inner
internal_ballbearing_spacerSits on the inside of the shoulder bearing.
MaterialPLA
Back cover mounts, lower
loewer_back_cover_support ×3Hold the bottom of the back cover.
MaterialPLA
Serial servos
main ×31The serial bus servos at the joints: two in the neck, five in each arm, the STS3250 at the shoulders.
ModelFeetech STS3215 / STS3250
Neck
neckThe column between the torso and the head.
MaterialPLA
Neck links
neck_arm ×3The two links between the neck and the head, one on each side.
MaterialPLA
Neck link coupler
neck_arm_couplerJoins the two neck links at the back.
MaterialPLA
Neck-to-head joint
neck_head_couplerWhere the neck meets the head.
MaterialPLA
Neck servo base
neck_servo_baseThe base of the servo that turns the neck, inside the top of the torso.
MaterialPLA
Head servo mount
neck_servo_head_supportHolds the servo inside the head.
MaterialPLA
Neck servo side brackets
neck_servo_support_side ×3Hold the neck servo from the sides.
MaterialPLA
Neck plate
neck_supportThe plate at the top of the torso the neck stands on.
MaterialPLA
Power inlet and switch
power_inputOn the back of the base: the mains cable plugs in here, with the power switch built into the inlet.
ModelIEC power inlet with switch
Power supply
power_supply_12v40aA 12 V, 40 A supply inside the hips, fed from the mains inlet on the back.
Model12 V 40 A
Power supply brackets
power_supply_holder ×3Hold the power supply inside the hips, one on each side.
MaterialPLA
Shoulder joint housing
servo_sholder_joint ×3Holds the servo at the shoulder that lifts the arm.
MaterialPLA
Shoulder joint, back flange
servo_sholder_joint_flex_base ×3The back half of the shoulder joint.
MaterialPLA
Shoulder joint, front flange
servo_sholder_joint_flex_front ×3The front half of the shoulder joint.
MaterialPLA
Arm rotation servo plate
servo_support_btm_first_arm ×3Holds the servo that turns the lower part of the arm.
MaterialPLA
Shoulders
shoulder ×3The two large pieces between the torso and the arms.
MaterialPLA
Shoulder bearing cover
shoulder_ballbearing_coverCloses the ball bearing of the shoulder.
MaterialPLA
Shoulder mounts
shoulder_body_support ×3Where each shoulder is attached to the torso.
MaterialPLA
Shoulder covers
shoulder_cover ×3Close the shoulder joints from behind.
MaterialPLA
Shoulder servo brackets
shoulder_servo_bracket ×3Connect each shoulder servo to its shoulder.
MaterialPLA
Shoulder servo mounts
shoulder_servo_support ×3Hold the shoulder servos inside the torso.
MaterialPLA
Shoulder crossbar
shoulders_bracketRuns across the torso and ties the two shoulders together.
MaterialPLA
Speaker grilles
speaker_cover ×3The two round grilles on the sides of the torso.
MaterialPLA
Emergency stop
stop_buttonThe red mushroom button on the back of the base, next to the power inlet.
ModelEmergency stop mushroom button
Back cover mounts, upper
upper_back_cover_support ×3Hold the top of the back cover.
MaterialPLA
Board mount
ventunoq_holderHolds the Arduino Ventuno Q at the front of the torso.
MaterialPLA
Waist
waistBetween the torso and the hips.
MaterialPLA
Electronics
One board, two brains.
At the front of the torso, visible through the chest window, sits an Arduino VENTUNO Q. Its Qualcomm Dragonwing processor runs vision and language models, and its STM32 microcontroller handles real-time control, on the same board. Behind it, a driver board runs the serial bus servos at the neck, shoulders and arms, and a PWM driver runs the small servos in the hands. A 5 inch screen is the face. One camera in the head follows people, and one in the chest sees what the hands are about to take. Power comes from the mains through an inlet with its own switch, into a 12 V 40 A supply inside the hips, with a mushroom emergency stop next to it.
Software
Vision, voice and language models.
Neo answers to its name. Say “Hey Neo” and it listens, thinks and answers out loud, with speech recognition (Whisper), a language model (Qwen3 4B) and a voice (Piper), all running locally. The head turns towards whoever is speaking, and the eyes on the screen follow them and show how it feels. The chest camera recognises the objects you hand it, so Neo can take them, look at them and give them back, or play a game of dice against you. It also learns by demonstration: move its arms by hand and it remembers a pose or a whole routine by name. In mirror mode, one arm copies the other as you move it. Everything is tied together with Arduino App Lab: sketches on the microcontroller, Python on Linux. A web control center, served by the robot itself, shows a live 3D model and lets you drive every joint, with collision checking.
