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ExploreProjectsFPV Omnibot Gripper

FPV Omnibot Gripper

A mod of the Hack Pack Omnibot Forklift adding precise maneuvers, a robotic gripper, a web control interface, remote camera streaming, and much more.

HeavyFalcon678
HeavyFalcon678
Published Jun 23, 2026
• intermediate 2 0-135•roboticsCrunchLabsopenhardwarehackpackraspberrypi
FPV Omnibot Gripper

Introduction

YouTube

https://github.com/HeavyFalcon678/FPV-Omnibot

This a hack of the Crunch Labs Hack Pack Box #011 - Omnibot Forklift that unlocks its full potential and allows you do do fun things like:

  • Add a 3D printed robotic gripper to pick things up

  • Control the omnibot from a web dashboard on any device using the same network

  • toggle a slow mode to enable precise maneuvering

  • combine a camera with the web UI to add remote web streaming

To allow as many people as possible to upgrade their omnibots, I there are multiple different configurations you can use:

  • Precision (no extra hardware)

  • Gripper (stock remote + gripper)

  • Dashboard (stock omnibot + RPi)

  • GripUI (gripper + RPi)

  • FPV (RPi & camera, no gripper)

  • LEGENDARY (gripper, RPi, & camera)

Prerequisites

Gripper

Parts List8 items · $15.00 est.
ComponentQtyNotes
SG90 or MG90 Servo1-
M3x8 BHCS Screw4$25 for all hardware
M4x8 BHCS Screw2-
M4x4x6 Heatset Insert2-
Jumper Wire M-M3$7 for all jumpers
Jumper Wire M-F3-
3D Printed Parts1PETG or PLA works fine
(Optional) Grip Tape1-

WebUI

Parts List4 items · $55.93 est.
ComponentQtyNotes
Raspberry Pi1-
5V Battery Pack 1-
USB Cable1-
Jumper Wire F-F9$7 for all jumper wires

Camera

Parts List5 items · $65.00 est.
ComponentQtyNotes
Raspberry Pi Camera 3 Wide1-
300mm Raspberry Pi Camera Cable1-
Female to Male Jumper Wires9-
M2x6 BHCS Screw4$25 for all hardware
M2 Hex Nut4-
Tools Required2
3D Printercheck local libraries or makerspaces if you don't own one
Soldering Ironfor heatset inserts
1

Build the Gripper

First, set the M4x4x6 heatset inserts into the gripper base. Then drop the leadscrew into its slot and use the retaining pin to lock it in place (you may need a drop of glue to secure it).

Next, use two M3x8 screws to attach the servo to the gripper mount, making sure that the servo output shaft is on the bottom. Then use the other two M3x8 screws to connect the gripper base to the mount.

Finally, insert a M4x8 screw through a cap and gripper arm into the base twice, making sure to line up the gear teeth together. Then unscrew the top of the robot, slide the forklift piece off, slide the gripper assembly on, and rebuild the robot's top.

2

Set Up the Raspberry Pi

Set up the pi as normal using the Raspberry Pi Imager. I'd recommend using Raspberry Pi OS Lite (64-bit), but you can use whatever you'd like. Make sure to write down the hostname, username, and password. Also MAKE SURE to connect the pi to WiFi and enable SSH with password authentication.

When you're finished, insert the SD card into the pi and power it up. Wait a minute or so, and then connect to it by running ssh *username*@*hostname* and enter your password. When the login is finished, run wget https://github.com/HeavyFalcon678/FPV-Omnibot/raw/main/forky.sh && . forky.sh install && . forky.sh run and follow the prompts.

Finally, run echo "$(hostname -I | awk '{print $1}'):5000" and take note of the output. This is the URL your web interface will be running on. Then reboot the pi and everything should be good to go.

3

Camera

If you're adding the camera, mount it onto the 3d printed camera mount using the four M2x6 screws and M2 hex nuts. Unscrew the top M3x8 servo screw, attach the camera mount, and screw it back into place. Finally, connect the 300mm camera cable to the RPi.

4

Wiring

For the gripper wiring, connect the servo to power and ground, and the signal wire to digital pin 10 on the Arduino.

For the RPi wiring, the connections are listed below (BCM format).

RPI <-> ARDUINO
GPIO4  - A5
GPIO17 - A4
GPIO27 - A3
GPIO22 - A2
GPIO10 - A1
GPIO9  - A0
GPIO11 - D12
GPIO5  - D11
GND    - GND
5

Code

You can find all the program code for this hack at https://github.com/HeavyFalcon678/FPV-Omnibot/tree/main/arduino_code. If you're using a Raspberry Pi upload pi.ino, otherwise use noPi.ino. Also make sure to include the config header, regardless of which one you are using.

Usage

If you are using the stock RF remote, the additional controls are as follows:

UP + L -> Open Gripper
UP + R -> Close Gripper
DN + L -> Toggle Slow Mode

If you are running the webUI on a RPi, go to the URL you wrote down at the end of step 3 and it should work automatically, with all the buttons being self explanatory. On desktop there are some keyboard shortcuts:

W -> Up
S -> Down
A -> Left
D -> Right
Q -> Rotate CCW
E -> Rotate CW
W+A -> Diagonal Left Up
W+D -> Diagonal Right Up
S+A -> Diagonal Left Down
S+D -> Diagonal Right Down
SPACE -> Toggle Fast/Slow
I -> Raise Fork
K -> Lower Fork
J -> Open Gripper
L -> Close Gripper

Notes

  • This hack won first prize in the CrunchLabs Hack Pack Contest #001

  • This project is part of the The devEco Open Hardware Initiative (devOSH), an initiative for open source hardware collaboration. Learn more about it here.

  • If you have any issues or questions, feel free to contact me on GitHub or Discord and we can discuss them.

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