Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe

Twitter Controlled Robot Hand (that shows you the finger)

By Ashutosh Bhatt April 29, 2015

It was bound to happen. Sooner or later someone was bound to create a robot hand that gives you the finger on command. Here’s one such robotic hand, beautiful constructed,  which is (or was) controlled by Twitter. Named “The Hand of PI” by its creator, it gets activated upon sending a tweet to @OurCatDoor handle. Depending on the text of the tweet, the “The Hand of PI” will do what you command. The recognizable copmmands are (text in lowercase):

1) one : holds up one finger

2) peace: shows the two finger peace sign – the V sign

3) three: three fingers up

4) hookem: the maker is a Texas Longhorn fan and this gesture makes sense to the fans

5) fist: the Hand of PI gets ready to fight

6) open: palm open and welcome for a high five

7) finger: this command will make the hand give, well, The Finger

While the twitter handle is still active, I doubt if the robotic hand is still functional and still operating with that handle. You can tweet to the owner to confirm or maybe directly send one of the commands to @OurCatDoor to see how the owner responds.
 

The hand is based on Raspberry PI which runs a Python script searching any tweet sent to @OurCatDoor. In the video below, you can watch an iPad tweeting to @OurCatDoor that has the command “finger” in it.  It takes a few seconds to process, but eventually the Raspberry PI finds the tweet, parses it, and recognizes the text “finger” as a valid command. The Python script sets the PI’s GPIO ports High/Low.  The PI GPIO is connected to a PICAXE 18M2 via a HC7404 buffer. The PICAXE 18M2 reads the PI’s GPIO to control five servo motors.  “The Hand of PI” then does what it is supposed to 😉 


Filed Under: Reviews

 

Next Article

← Previous Article
Next Article →

Questions related to this article?
👉Ask and discuss on Electro-Tech-Online.com and EDAboard.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

EE TECH TOOLBOX

“ee
Tech Toolbox: 5G Technology
This Tech Toolbox covers the basics of 5G technology plus a story about how engineers designed and built a prototype DSL router mostly from old cellphone parts. Download this first 5G/wired/wireless communications Tech Toolbox to learn more!

EE Learning Center

EE Learning Center
“engineers
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, tools and strategies for EE professionals.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


RSS EDABOARD.com Discussions

  • The Analog Gods Hate Me
  • Battery Deep Discharge – IC Workarounds?
  • Safe Current and Power Density Limits in PCB Copper(in A/m² and W/m³) simulation
  • Why so few Phase shift full bridge controllers?
  • Apc 650 upa

RSS Electro-Tech-Online.com Discussions

  • Simple LED Analog Clock Idea
  • The Analog Gods Hate Me
  • Wideband matching an electrically short bowtie antenna; 50 ohm, 434 MHz
  • PIC KIT 3 not able to program dsPIC
  • Parts required for a personal project

Featured – LoRa/LoRaWan Series

  • What is the LoRaWAN network and how does it work?
  • Understanding LoRa architecture: nodes, gateways, and servers
  • Revolutionizing RF: LoRa applications and advantages
  • How to build a LoRa gateway using Raspberry Pi
  • How LoRa enables long-range communication
  • How communication works between two LoRa end-node devices

Recent Articles

  • Tria modules integrate edge AI processing with multi-core processors
  • pSemi introduces RF switch with 52 dBm PMAX,PEAK and 90-dBm IIP3 linearity
  • XP Power launches 1.3 kW power supply with 58.9 W/cm³ density
  • How to enable Wi-Fi provisioning in ESP32-based IoT products
  • Amphenol RF introduces FAKRA to SMA adapters with 4 GHz operating frequency

EE ENGINEERING TRAINING DAYS

engineering

Submit a Guest Post

submit a guest post
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • Battery Power Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • EV Engineering
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • Subscribe to our newsletter
  • About Us
  • Contact Us
  • Advertise

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy

Search Engineers Garage

  • Electronic Projects & Tutorials
    • Electronic Projects
      • Arduino Projects
      • AVR
      • Raspberry pi
      • ESP8266
      • BeagleBone
      • 8051 Microcontroller
      • ARM
      • PIC Microcontroller
      • STM32
    • Tutorials
      • Audio Electronics
      • Battery Management
      • Brainwave
      • Electric Vehicles
      • EMI/EMC/RFI
      • Hardware Filters
      • IoT tutorials
      • Power Tutorials
      • Python
      • Sensors
      • USB
      • VHDL
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Product News
    • Business News
    • Company/Start-up News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • DigiKey Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • Learn
    • eBooks/Tech Tips
    • Design Guides
    • Learning Center
    • Tech Toolboxes
    • Webinars & Digital Events
  • Resources
    • Digital Issues
    • EE Training Days
    • LEAP Awards
    • Podcasts
    • Webinars / Digital Events
    • White Papers
    • Engineering Diversity & Inclusion
    • DesignFast
  • Guest Post Guidelines
  • Advertise
  • Subscribe