LED Juggling Balls

3D printed LED juggling ball powered by an ESP32.

Watch a demo on Youtube: 

All code files and detailed instructions are available at https://github.com/scholtzan/juggled

Printing

Inner core - transparent PLA+ with 5% infill

Outer shell - transparent TPU with 30% infill

Electronic and required materials

• ESP32
 DEVKIT V1
  • This development board has an onboard Bluetooth module, will control the LEDs and collect data from the accelerometer
• Lithium 
Battery
 3.7V
  • The battery will power the ESP32 and all other components
• Li-lon Battery
 Charger
  • This component will ensure that the Lithium battery can be recharged via micro USB
  • For collecting data on whether the juggling ball has been thrown or caught
• 2x RGB LEDs
  • To make the juggling ball glow
• Resistors
  • 1x 1kΩ
  • 1x 4.7kΩ
  • Used to read the battery charge via the ESP32
• Switch
  • To turn the juggling ball on and off
• Capacitor (1 to 100uF)
  • Required in order to ensure ESP32 gets flashed without having to push any buttons on the microcontroller
• Wire
  • For connecting all the components
• Heat Shrink Tubes
  • For insulating soldered wires
• Soldering Iron + Solder
  • All the components need to be soldered together
• Transparent TPU
  • For printing the outer shell
  • Soft and flexible material will ensure that components and inner core are protected when juggling balls are dropped
• Clear PLA+
  • For inner core that will help to keep electronics in place
• Hot Glue
  • For glueing outer shell onto inner core and for fixating electronics

Print Settings

Printer Brand:

Creality

Printer: 

Ender 3

Rafts:

No

Supports: 

No

Resolution:

200

Infill: 

5% and 30%

Filament: Eryone PLA+ and TPU transparent