Jiggle‐Jiggle Box - cmubuild18/Build18 GitHub Wiki

Jiggle-Jiggle Box

A box that jiggles. It also play music.

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Purpose: to make playing music a more engaging experience by the inclusion of ferrofluid that dances to your favorite songs.

How the parts were used: The ESP-32 receives bluetooth signals from a mobile phone, analyzes the signal, and makes a ferrofluid oscillate to the music as per the song. It does so by generating a regular pattern of electromagnetic pulses, whilst also lighting up a NeoPixel LED marquee that provides artistic flair and ambient lighting. Concurrently, the ESP-32 controls transducers that play the music.

Implementation: Audio amplifiers and transformers were used to guarantee good sound quality and overall design safety. The entire circuitry was bounded in a custom made bounding box.

Overall Outcome: A custom designed box with a window to view the dancing ferrofluid and 2 outlets for the speaker. Box internally lined with LEDs, with the names of all builders engraved on the top-side opening of the box. Upon playing a song, the LEDs and ferrofluid instantaneously pulsate, and respond to stops and "beat drops" in the song.

Team Members

Team Member Photo
Arnav Sabharwal Team Member Photo
Ethan Lu Team Member Photo
Victor Zayakov Team Member Photo
Petros Emmanouilidis Team Member Photo
Yuqi Gong Team Member Photo

Photos

https://drive.google.com/drive/folders/1QpOInkEGTM7Z1n-6mYHbEMRuz6Z8Khkn?usp=sharing

Parts

Part Unit Price Quantity Cost Needs to be Ordered through Build18? (Y/N) Part Link
FerroFluid Bottle 2ml 21.99 1 21.99 Y https://www.amazon.com/Ferro-Fluid-Display-STEM-Enthusiasts/dp/B07XTP99V1/ref=sr_1_3_sspa?keywords=ferrofluid&s=handmade&sr=1-3-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1
ESP32 Microcontroller 9.99 1 9.99 Y https://www.amazon.com/HiLetgo-ESP-WROOM-32-Development-Microcontroller-Integrated/dp/B0718T232Z/ref=asc_df_B0718T232Z/?hvadid=647148730756&hvpos=&hvnetw=g&hvrand=16927182438919365042&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9005925&hvtargid=pla-437464910793&psc=1&mcid=3b3ebda12e0838758f86efcad7950f0c
Electromagnet 24V 39.99 1 39.99 Y https://www.amazon.com/uxcell-Electric-Lifting-Electromagnet-Solenoid/dp/B01N9R0FYJ/ref=sr_1_2?crid=TIOS83CG580F&keywords=uxcell%C2%AE+DC+1400N+Electric+Lifting+Magnet+Electromagnet+Solenoid+Lift+Holding&qid=1700711442&s=hi&sprefix=uxcell+dc+1400n+electric+lifting+magnet+electromagnet+solenoid+lift+holding%2Ctools%2C121&sr=1-2-catcorr
RGB LED Strip 60/m, 1m Option 26.95 1 26.95 Y https://www.adafruit.com/product/2846
Sound Transducers 4 Ω 47.99 2 95.98 Y https://www.amazon.com/Dayton-Audio-RS100-4-Reference-Full-Range/dp/B00JZTE00I/ref=sr_1_1?crid=3SA5M2N294EQO&keywords=Dayton+Audio+RS100-4+4%22+Reference+Full-Range+Driver&qid=1700711343&s=electronics&sprefix=dayton+audio+rs100-4+4+reference+full-range+driver%2Celectronics%2C70&sr=1-1
Audio amplifier 24V 10.77 1 10.77 Y https://www.amazon.com/Taidacent-XH-M547-Amplifier-Circuit-TPA3116D2/dp/B07VP3DLP2?ref_=ast_sto_dp
Power supply 24V 16.99 1 16.99 Y https://www.amazon.com/Auplf-Supply-Adapter-100-240V-Cameras/dp/B088897J2D?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A1NZ5KCBXXPHME
24V to 5V Converters (pack of 2) 14.99 1 14.99 Y https://www.amazon.com/UCTRONICS-Converter-Transformer-Voltage-Regulator/dp/B07XXWQ49N/ref=sr_1_2?keywords=24v+to+5v+dc+converter&qid=1700715452&sr=8-2
Laser Cuttable Wood Plywood 1/8 inch 3 6 18 N (purchased at Techspark) -
Total Cost: 237.65
Remaining Budget:(out of $300) 62.35