Raspberry Pi Game Night Timer with Bluetooth Speaker — DIY Tutorial

Slow turns wreck game night? This episode upgrades the timer’s sound: we ditch the piezo buzzer and use a Bluetooth speaker (or 3.5 mm jack) for louder, cleaner alerts. I’ll show LED + button wiring, pairing a Bluetooth speaker, using custom WAVs, and recording your own clips in Audacity. We’ll keep the 16×2 I²C LCD so you can see the active player and seconds remaining. Watch previous builds: • Episode 1 (LEDs + Buzzer): https://youtu.be/0G3-ISume2o • Episode 2 (LCD Upgrade): https://youtu.be/WSQV_xoQzLM Prereqs & files: • Raspberry Pi setup: https://youtu.be/tftyvWMs-1w • GitHub code: https://github.com/carolinedunn/game-night-buzzer • STL cases (3D print): https://www.thingiverse.com/thing:7136384 • LCD 16×2 (I²C): https://amzn.to/4gc2VBj Materials (affiliate links) Bluetooth Speaker: https://amzn.to/3Ii5hlA USB Microphone (for Audacity): https://amzn.to/3Ii53ee LEDs: https://amzn.to/45OMQxZ 330 Ω resistors: https://amzn.to/45MSTTO LEDs w/ prewired resistors: https://amzn.to/464NMgF Button: https://amzn.to/4n9EhDK Jumper wires: https://amzn.to/4mXJ9w3 Raspberry Pi 4: https://amzn.to/4mXJ9w3 Breadboards: https://amzn.to/4nehtme LCD 16×2 (I²C): https://amzn.to/4gc2VBj Affiliate Disclosure: As an Amazon Associate, I earn from qualifying purchases—thanks for supporting the channel at no extra cost to you. ⏱ TIMESTAMPS / CHAPTERS 0:00 – Opening demo 1:14 – Materials list 2:32 – Raspberry Pi setup & get code 3:46 – LEDs & button wiring and testing 5:00 – Install LCD 5:22 – Enable I²C 5:52 – Test LCD 6:28 – Plug in speaker (if using 3.5 mm jack) 6:42 – How to pair and select a Bluetooth speaker 7:57 – Testing your speaker 8:23 – Running the game timer code 9:22 – Record your own custom audio (Audacity + USB mic) 12:12 – Final project in 3D-printed case (Pi + LCD) 12:41 – Outro + how to enter the September 2025 AIY giveaway 🎁 SEPTEMBER 2025 GIVEAWAY — ELIGIBLE VIDEO I’m giving away ONE Google AIY Voice Kit v1 this month. Note: The Raspberry Pi 3 is NOT included—you’ll need your own Pi. How to enter (2 steps): 1. Comment on THIS video: tell me which board/card game your friends or family take the longest on, or a Raspberry Pi project you’d like to see on this channel. 2. Submit the entry form linked below. Window & Draw: • Entries open Sept 1–30, 2025 (ET). • I’ll go LIVE to randomly draw and announce the winner on Thu, Oct 9, 2025 at 12:00 PM EST. Eligibility & Notes: • US only — I cover standard shipping within the United States. • One entry per person per month. No Shorts. Entries do not carry over to future months. • If you win once, you’re not eligible to win again in later months. This giveaway is sponsored by me, Caroline Dunn, and is not sponsored, endorsed, or administered by YouTube or Google. Contest Rules: https://carolinedunn.org/game-night-timer-aiy-voice-kit-v1-giveaway/ Entry Form: https://forms.gle/S1XsVNmWa49zMV859 #RaspberryPi #RaspberryPiProjects #DIYElectronics #Bluetooth #Audacity #BoardGames #GameNight #LCD #I2C #Maker