OVERVIEW:

Operation Blastoise is a bluetooth remote controlled water turret.

It has 360 degrees of yaw and ~180 degrees or pitch. 

The controller can articulate the turret in any manner they desire, and fire at will.

FEATURES:

Blastoise Main Components:

• x1 360 degree servo motor - Spins the top plates.

• x1 180 degree servo motor - Articulates the water filled syringe.

• x1 ESP32 - Controls the servos, pumps, receives bluetooth signals, etc.

• x1 Water Pump - Pumps water up from the water reservoir into the syringe.

• x1 Air Pump - Pumps water out of the syringe creating a 'turret' effect.

• x4 AA Batteries - Provides power to the entire system

Blastoise consists of 3 layers:

Layer 1: A base plate with a gear and ball bearing which serves as a foundation for the spinning upper plates.

Layer 2: A central hub which contains the batteries, 360 degree servo, a water resrvoid, our PCB, and a water pump.

Layer 3: A mount for the syringe which is surrounded by a splash guard to prevent electrical components from getting wet.

CAD:

SCHEMATIC & LAYOUT:

We use the ESP32 GPIO pins to control two PWM servo motors. 

One motor is a continuous rotation motor which controls the yaw (rotating the whole turret to change positioning), and the other servo motor is a 180-degree pitch motor, which controls the angle of the syringe.

Additionally, there are two MOSFETs that step down and power our two DC pumps, one for air and one for water. We send a low-voltage signal to the MOSFET which lets current flow through it to activate the motor at a set votlage. Other than that, we're using the built-in Bluetooth receiver to give instructions to the water turret. 

BILL OF MATERIALS:

Operation Blastoise consists of 41 different components. Our total build cost is $56.99/B where '/B' means 'Per Blastoise'. 

IRL FINISHED BUILD: