In light of the broad scope of robot applications, this smart water-serving robot was developed. While there are several water-serving robots on the market, many are costly and complex in design and heavy in weight.
This economical and lightweight water-serving robot addresses this issue with a simple design. It demonstrates high precision in its control.
The author’s prototype is shown in Fig. 1. The components required for this device are listed in Bill of Materials table.
Circuit and working
The circuit diagram of the smart water serving robot is shown in Fig. 2. It is built around Arduino Uno (MOD1), Bluetooth HC-05 (MOD 2), L298 motor driver, and a few other components.
Connect the VCC in the circuit diagram to the positive terminal of the 12V battery and GND to the negative terminal. For this setup, the author used a battery holder and three 3.7V batteries. This totals to 11 to 12V input for the motors (3.7Vx3=11.1V). The Arduino utilises the Vcc pin to convert this to 5V using its built-in voltage regulator. Alternatively, a single 12V battery can be used.
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