Snaps o mat aka Barkeeper

https://makerworld.com/en/models/1487488-automatic-shot-dispenser-v2-pcb-battery-powered?from=search#profileId-1554308

I've adapted the unit a bit to my personal needs. For example, I've added a battery indicator to the side of the tower and removed the central partition to give the hose enough room to work. Furthermore, I've installed a bracket for a step-down module in the base unit, and the batteries are now easily replaceable without having to disassemble everything.

🧰 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)
• https://www.amazon.com/-/de/dp/B0CQC1PP7K/ref=sims_dp_d_dex_ai_rank_model_1_d_v1_d_sccl_2_1/135-6181294-5087532?pd_rd_w=GSvad&content-id=amzn1.sym.bb4a0aac-c2b4-4b4b-a0c8-9aa89b28dce3&pf_rd_p=bb4a0aac-c2b4-4b4b-a0c8-9aa89b28dce3&pf_rd_r=X3MBH96EVK02F73XXN30&pd_rd_wg=jTj5n&pd_rd_r=e8944730-10cb-4169-befa-0d8e3ffb0a46&pd_rd_i=B0CQC1PP7K&psc=1