Here are all 75 projects made at Undercity!
Do you use a toilet? Do you do the number 2? Then the Automatic Toilet Paper Folder is just for you. It doesn't just dispense toilet paper for you but folds it too, greatly simplifying toilet usage. It can be especially helpful for people with limited dexterity or those who simply want to get back to doing their real business.
A XY gantry system to play the GamePigeon game Word Hunt. A Camera module takes a picture of the Word Hunt board. It then uses an algorithm to read and process the letters on the screen. The Python script then uses a dictionary file to generate the best words and their swipe paths, which is sent to the XY gantry system with two stepper motors holding an Apple Pencil to play the game. On our best attempt (so far), it scored 23,800, which is much higher than the average score
Created at HackClub's undercity, Drink Not Found is a system where you play Tic-Tac-Toe using a drawing machine against AI-buddy Auto (credit: Paolo). If you win, you can pick a drink from the vending machine, and randomly get any drink except that one. Also, you contribute to a unique mosaic.
Duck off Doomscrolling is a fun way to quit destructive/disruptive/depressing social media! Basically it is a duck that will sit on your desk while you work and squirt water on you if you open doom scrolling apps such as Instagram Reels, Youtube shorts, or X. LETS QUIT DOOMSCROLLING :D
This scara printer uses a double arm system and a drive train to be able to print in XYZ and utilize the floor as a bed to create a cost-effective, efficient printer. This printer was built for undercity, a 4 day hackathon by @lordbagel42, @vibsthebot and @KaiPereira.
Dyno is Undercity's only touchscreen display, with the goal of being able to control different functions (for example, Spotify.) With different display modes capable of working with your music app and location-based weather, this project combines innovation, aesthetics, and practicality. Since we did not have access to capacitive-touch hardware during the hackathon, we improvised with a novel AI approach to depth sensing and finger detection. This approach is often able to pinpoint the user's exact place of touch and works well for our LED-powered "buttons." The technical capability of this board enables a practical approach to the user experience, prioritizing play/pause functions, weather readings based on where you are, as well as future hotkeys and macros.
A roulette that explodes capacitors! It explodes huge capacitors as the roulette function, kind of like russian roulette. It utilizes transistors and relays and buttons to explode capacitors, as everyone loves explosions. I made this because I felt that there wasn't enough explosions at the moment and making a fun game (that's harmless) while also making it explosive is the best way to do it. Overall, it's a great fun explosive time
Autoincorrect is a Morse code translator that purposely misinterprets the Morse code it receives by changing what was input to something unrelated and displaying it on the screen. It has a button to input Morse code, a speaker that plays the Morse code in real time as you input it, and a screen that displays the Morse code and word as you are typing it, and when you are done, it will auto-incorrect it.
It has an RC car base that allows it to move around and give people their fortune. It uses flywheels to launch a small disc with a fortune inside whenever it encounters people. It has two beefy servos that allow it to turn left, right, up, and down. There is one tiny motor that powers the launching system to push the fortune discs into the flywheels. Above the discs is a tube that allows for multiple to be stored, carried, and launched all at once.
a nostalgic all-in-one productivity and music dashboard that lives on your desk — not buried in a browser tab. Designed with a cozy retro TFT display, tactile keys navigation, joystick, and a smooth analog slider, Focus Pad brings a physical, satisfying way to interact with your digital life. (p.s. ur asian parents would love you to lock in with this)
So you've watched Squid Game before, right?.... If not, that's okay. "Red light green light" is a game where one person decides whether it's "green light" or "red light". When it's green light, the deciding person must not look at the players, while the players travel towards the deciding person. When the deciding person announces "red light", all players must halt any movement immediately. The deciding person must turn around quickly, seeing if anyone moved. Should someone move during this phase, they will be eliminated. The TV show "Squid Game" introduces a verry deadly twist to this game: people now get shot to death if they fail in the game. This is exactly what we're trying to create. The camera tracks people and detects movements. If a person is detected moving during red light, a beefy servo motor attached to the trigger will turn fire the (Nerf) gun (and kill the person :-[) We encountered a technical difficulty because apparently the most powerful motor is not powerful enough to move the gun... we pivoted from the original idea to make a linear red light green light. So how is it different from the original red light green light? No to (disgusting) friends It cannot work with your friends. Why do you have friends anyway? What are you doing? Socialising?! Impossible!!!111!!! It's in a line. Since the gun no longer moves, you have to move towards the gun while following a straight line. Discipline yourself!!!1111!!!! When the players reach the gun, they can press a button to end and win the game.
Meet PicoBear! Have you ever been hanging out with your friends and made a phone tower to avoid reaching for your phone? Even when you’re around people you enjoy, our brains are still addicted to fast and cheap dopamine hits. PicoBear is a lock box that’s designed to minimize distractions, especially screen time usage. As you just saw, you can open the box to put your phone, technology, or any type of distraction inside. Afterwards, use the buttons on the top of the box to set the timer. The black button controls hours, the white button controls minutes, and the red button sets the timer. The display above the switches displays the hour & minute countdown for the timer. The way the PicoBear minimizes distractions is by forcing you to physically isolate your distractions, as well as negatively reinforcing the habit using LEDs. If someone instinctively reaches for their phone, the LEDs flash red, reminding them to stop and lock in.
We always thought traditional keyboards are too boring. We also thought it was funny how electronic pianos and the tools we use to type share a name. So we decided to cross these two, and create this ultimate design! You can only type a choice of 7 letters at a time, as our keyboard only has one octave. This means to be able to type different keys, you have to cycle through the octaves using two dedicated keyswitches. Isn't it awesome?