element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • About Us
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
Arduino Projects
  • Products
  • Arduino
  • Arduino Projects
  • More
  • Cancel
Arduino Projects
Blog Pedro Robot
  • Blog
  • Documents
  • Events
  • Polls
  • Files
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join Arduino Projects to participate - click to join for free!
  • Share
  • More
  • Cancel
Group Actions
  • Group RSS
  • More
  • Cancel
Engagement
  • Author Author: ensei
  • Date Created: 4 Mar 2025 4:10 PM Date Created
  • Views 2899 views
  • Likes 6 likes
  • Comments 4 comments
  • bluetooth
  • maker
  • wifi
  • kickstarter
  • engineer
  • robotics
  • pcb
  • diy
  • servomotor
  • servo
  • raspberrypi
  • electronics
  • electronic project
  • arduino
  • innovation
  • arduino projects
Related
Recommended

Pedro Robot

ensei
ensei
4 Mar 2025

image

Pedro 2.0 is a fully open-source project, designed to be accessible and customizable for everyone. It’s easy to assemble no screws, no glue, no tools required! Perfect for makers, students, and educators looking to explore robotics and programming.

Certified by the Open Source Hardware Association under UID FR000025

Robot You can now support Pedro on kickstarter  RocketRocket  

image

Technical Specifications

  • Pedro Board (Rev. 3) compact size: 55x55mm.
  • Microcontroller: ATmega32U4.
  • Power supply: 7.4V DC Rechargeable Battery by Micro USB cable.
  • 3D Printed Parts: High-quality PLA or ABS, providing durability and strength.
  • 4 x Servo motors SG90 360° for precise control of the arm’s movements.
  • 2 x Ball Bearings 8x22x7mm for enhanced movement accuracy.
  • NRF24L01 for wireless communication.
  • ESP8266-01 for WiFi and IoT applications.
  • HC-05 for Bluetooth connexion.
  • OLED display 128x64 for real-time feedback

image

image

  • Sign in to reply
  • shabaz
    shabaz 7 months ago

    Hi,

    I've got a few small suggestions that may be worth resolving. The nets indicated below with a red arrow have no label against them, so it's not possible to tell what is the VCC net (3.3V or 5V) and what the other net is. Please can you add net labels there, or, even better, a supply symbol.

    The blue arrows show 220 ohm resistors, and the current draw will be at least 15 mA (if you're using 3.3V for VCC, otherwise it will be higher current), and while on it's own that may not be too bad, if someone presses multiple buttons, that current draw will rise significantly. It would be good to change those resistors to (say) 10k, or you may be able to remove them entirely, if that Arduino supports internal pull-down (I don't know if it does; a pull-up arrangement could be better, and have the switches connected to ground instead of VCC).

    The green arrows show the supply connections to the servos. There could be a risk of burning out the servo motors, if something prevents the servo from moving (this can be quite likely with a robot arm project, where a user might try to pick or move something too heavy). One solution is better servo's, but they can be expensive. Another solution might be to put something like a polyfuse in series with the supply connection per servo, however you'd need to try it, to see what works. You could use a normal non-resettable fuse, but that would be annoying for users since they may blow frequently.

    image

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • More
    • Cancel
  • Cliffyd43
    Cliffyd43 7 months ago

    Very cool

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • More
    • Cancel
  • ensei
    ensei 7 months ago in reply to DAB

    thanks

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • More
    • Cancel
  • DAB
    DAB 7 months ago

    Interesting project.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • More
    • Cancel
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2025 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube