Automatic Shot Dispenser v2 | PCB Battery-Powered

Step-by-step guide to building a fully automatic drink dispenser – now in an improved version with a custom PCB and rechargeable battery power (2x 18650 cells)!

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In this project, I’ll show you how to build an automatic drink dispenser completely from scratch. I started with an existing design and made several important modifications:

• Added a dedicated PCB for better reliability and easier assembly.
• Switched to a battery-powered system using two 18650 lithium cells for portability and convenience.
• Improved component layout and functionality.

If you're curious about the original design I started from, you can find it here:  OrginalProject

🎥 Watch the full build video here: [VideoLink]

 

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🧰 Part List:

• Drink pump with tubing (or compatible copper tube)
• Arduino Nano
• PCB (custom for this version)
• IRLZ44N MOSFET (important: logic-level gate for 5V control)
• 330Ω resistor
• 2x 10kΩ resistor
• 1kΩ resistor
• 2x Ceramic capacitor
• 1000uF Electrolytic capacitor
• 470uF Electrolytic capacitor
• RL207 diode
• 5x Limit switch 
• 5x LEDs or LED strip
• Rotary encoder KY-040
• 1.3" OLED display
• Servo motor SG90 180
• Momentary push button 12mm
• ON/OFF switch 15mm
• 5V | Type-C 15W 3A 18650 Lithium Battery Charger Module
• Variety of jumper wires
• Solder
• Wires (3 types depending on connection)
• Hot glue (for mounting and cable management)

🛠️ Tools Required:

• Soldering iron
• Hot glue gun
• Basic electronics tools

This project is great for learning about electronics, Arduino programming, and simple automation. With the new version, it’s also a lot more practical thanks to the standalone power supply.

Support future projects: [buymeacoffee.com/yourlink]

Let me know if you build one too – I'd love to see your version! 🚀