Show and Tell, Share a project you previously created or you are building right now
Show & Tell, share a project you previously created or you are building right now

Competition Closed To Submissions - Check out the winners announcement here!

Have you ever built an exciting electronics project but have nowhere to show it off?

Share it on the element14 Community in our Show & Tell competition!

It could be something you built previously in your spare time, at work, as part of your university studies, or something you are working on right now.

All you have to do to be in with a chance of winning is write a blog and include all the photos, videos, diagrams, code, etc. that you can.

Learn More About The Arduino UNO Q

How To Win

To be in the running to win the prize, participants had to submit their project here as a blog:

Check Out All The Projects Here

When writing your project entry, you will be expected to include:

  • Your plan for your project, how it works and what it does, and what inspired you to build it.
  • Document step-by-step how you built your project.
  • Any interesting problems you ran into and how you solved them or worked around them.
  • If your project is a work in progress, document what stage your project is at right now and what is working/not working, and what your remaining challenges are.

Click here for a full guide on how to write a winning project blog. Below are some recent projects submitted by community members to give you an idea of potential layouts for project blogs and how you can incorporate images etc. into your blog:

Important Dates

Competition open for submissions 24th June - 30th August 2026
Deadline for submissions 23:59 UK time 30th August 2026
Winners announced 7th September 2026 (updated on 4th September)
Prizes shipped (estimated) 18th September 2026 (updated on 4th September)

If you have any problems with the element14 Community or engaging with the competition, please "Report a Problem" in  Feedback and Support.

News from Staff
Show and Tell Competition Projects
  • USB LDO Inline Regulator and PSRR Measurement Circuits

    USB LDO Inline Regulator and PSRR Measurement Circuits

    theglassman
    Hey everyone, this is my first post here so apologies if anything is awry with the formatting or layout :) Project and Background Recently I have been working on a remote, motorised SDR satellite base station project (coming soon!), using an Arduino ...

  • Ambient LED heat network thermostat user-focused prototype

    TheRehn
    Edited to get the videos and pictures to actually uploadcommunity.element14.com/.../video-1.mp4I made this prototype for an Open University Interaction Design course using a Circuit Playground Bluefruit, an all-in-one micro-controller devel...

  • OLED System Monitor for the UNO Q

    veluv01
    Introduction For the last few weeks, I’ve had an Arduino UNO Q sitting on my desk, quietly running Hermes Agent. Most of the time it is not seen. No screen, no blinking lights that signify anything, just a small board doing work I can't see...
  • TARANGA – an improvised phonocardiography [PCG]

    TARANGA – an improvised phonocardiography [PCG]

    sunnyiut
    It's about how our research group at the University of Dhaka turned an ordinary stethoscope chestpiece into a digital phonocardiograph at a low cost which gradually turned into a training tool for the biomedical engineers. Barely changed in the two c...
  • Tetris Game on Raspberry Pi Pico

    Tetris Game on Raspberry Pi Pico

    zso2k
    Introdution Transforming a Raspberry Pi Pico into an 8-bit Tetris arcade system is a fantastic hands-on project for learning MicroPython and embedded electronics. Using standard components like Raspberry Pi Pico, OLED display, an analog joystick and ...
  • How I built an R/C Aircraft from Scratch

    How I built an R/C Aircraft from Scratch

    mr_neutrino
    Hi - This post is a brief overview of my R/C Aircraft Project. For some context, I'm currently 18 years old, and OBSESSED with planes - I'm about to start Aerospace Engineering as a first year student in 2027. This project was one of my ways ...

  • It will rumble, but not yet.

    me_Cris
    Hi makers!IntroductionAs I said in the title, my project is not yet ready to fully show itself, but it is not far off. You will see in the following pictures what components I want to use, and you will probably understand the project more easily.&nbs...

  • GAIA Wall: Turning a Raspberry Pi and Projector Into a Workshop Information Display

    gam3t3ch
    Current Setup for Gaia and Gaia wall. Raspberry Pi 5 16gb with a  Pironman 5 max case with 500gb m.2 drive and 1tb external for storage and above it currently is the Raspberry Pi 4 4GB with 64GB micro SD card for the GAIA wall node. GAIA Wal...
  • Building a Low-Power Pomodoro Timer from a 555 Timer and Decade Counter

    Building a Low-Power Pomodoro Timer from a 555 Timer and Decade Counter

    Shishir
    Introduction The idea behind this project was simple: build a small, physical timer from basic electronic components that could provide a tangible indication that a certain amount of time had passed. Rather than relying on a phone or software applica...
  • How many permissions does it take to turn on a light? - Privacy Friendly IoT integration PoC

    How many permissions does it take to turn on a light? - Privacy Friendly IoT integration PoC

    balajivan1995
    One of the most irritating things I face whenever I buy a smart device is installing manufacturer provided app to provision the device. Even if you have Alexa or Nest device, you are required to delegate the provisioning to 1st party app. The problem...

  • Warehouse Management System

    Domendra_Sahu
    INTRODUCTIONIn this project I have built A warehouse management System that can tell the Moisture and the Temperature of warehouse it would be very useful for the local warehouses that help the local farmer to prevent their grains from getting spoi...

  • Turning my old Lamp into Smart Lamp

    reeva
    This project outlines the process of upgrading a standard lamp enclosure into an automated, touch-controlled smart lamp using a microcontroller and basic sensors. Smart Features Intelligent Automation: The LDR continuously monitors ambient room li...

  • AI Voice Mood Lighting System

    karthickiot
    Hello everyone.  My Project14 project is called “AI Voice Mood Lighting System.” The basic idea is simple: I speak a word → the system recognizes it → the word is mapped to an emotion or situation → the RDK ...
  • STM32F405 custom flight controller PCB designed in Altium Designer

    STM32F405-Based Custom Flight Controller PCB – Work in Progress

    burakcakirer
    Custom STM32F405 flight controller PCB designed in Altium Designer with IMU, barometer, EEPROM, USB-C, ESC/servo outputs and onboard power
  • Reverse Engineering a Phone LCD for MCUs

    Reverse Engineering a Phone LCD for MCUs

    abtAmit
    We all have old feature phones lying around in a drawer, destined for e-waste. But recently, I learned about these old devices: many of their LCDs actually use the exact same standard SPI protocols and driver ICs as the hobbyist TFT modules we buy on...
  • Wearable convention Badge from Scratch: Bare ESP32-S3, E-Paper and 48 LEDs

    Wearable convention Badge from Scratch: Bare ESP32-S3, E-Paper and 48 LEDs

    Faolan
    Badge Table of Contents What is this project all about? 1.1 The project in one paragraph 1.2 Why I started this project instead of buying a finished product 1.3 Current status in the overall project plan Design goals and constraints 2.1 Requirements...
  • Show & Tell - Mystery Build

    Show & Tell - Mystery Build

    dougw
    Intro This is a quick blog to show something I've been working on. To make it a bit more interesting the viewer can try to guess what I am building while watching the first video. Mystery Build Video https://youtu.be/xwGBxIZjUsI The next video is a ...
  • Makers DAP Link - Near Universal ARM Programmer

    Makers DAP Link - Near Universal ARM Programmer

    arvindsa
    When it comes to work projects, 80% of the time for my primary MCU I work with STM32 family chips, 15% I work with Nordic Semiconductor SOCs, and the last 5% is something very specific. And when it comes to hobby it's a mixed bag. Given the large...
  • SillyScope: From Custom PCB to Working Oscilloscope

    SillyScope: From Custom PCB to Working Oscilloscope

    Matthew-Northeast
    Why I Built ItThe project that eventually became SillyScope started because I wanted to learn how to make my own PCBs for my university rocket team. The basic idea was essentially to make my own “homebrew Teensy”, using a custom STM32 boa...
  • Secure Digital Combination Lock

    Secure Digital Combination Lock

    kp35
    This project details the hardware architecture, firmware mechanisms, and interface dynamics of an embedded electronic access control system (EACS) centered on the STM32-based Nucleo-L476RG platform. Featuring a dynamic matrix keypad scanner, a TM1637...
  • Indoor Air Quality Monitoring Node using Arduino and HM3301 Laser PM Sensor

    Indoor Air Quality Monitoring Node using Arduino and HM3301 Laser PM Sensor

    mar3ti
    Indoor Air Quality (IAQ) monitoring is crucial for mitigating health risks associated with particulate matter PM1.0, PM2.5, PM10. This system measures airborne particulate matter (PM1.0, PM2.5, and PM10) using an HM3301 Laser Dust Sensor, displa...
  • Smart Gate Opener (made with AI)

    Smart gate opener

    emaker
    Last week, while I was organizing my drawers, I found a Microchip AVR-IoT Cellular Mini developement board that I had used a couple of years ago to make the project of a control system to get alerts in case of fire or intrusions by burglars in my cou...

  • The Wireless Electronic Fridge Tag

    fyaocn
    Overview The Wireless Electronic Fridge TAG  The idea is simple and a little playful: you type a message on your phone, and that message shows up on a small display stuck to the fridge with a magnet — no wires, no cloud account required t...
  • Peephole IP- camera for home.

    Peephole IP- camera for home.

    embeddedguy
    Table of Contents DFRobot ESP32s3 AI camera The Goal Software Requirements Implementing FTP server on ESP32 Light intensity sensor support Camera Sensor support SD-Card Support MIC interface Digital Speaker interface Working Demo Enclosure design ...
  • Lawnmower - Antweight Battlebot (454g)

    Lawnmower - Antweight Battlebot (454g)

    Ralb09
    Antweight Battlebot (454 grams) with a machined titanium spinner.  Currently in the process of creating my High School's battlebot team with my friends! We are in the process of getting the titanium spinner machined and shipped to us, and or...
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About Project14 Competitions

This is your opportunity to build an electronics project using just what you have lying around, what you can upcycle or purchase, and be in with a chance of winning a prize!
Project14 competitions are lots of fun, no pressure, and a chance to share with like-minded engineers and makers across the world.