COVID-safe Useless Box

This instructable was created in fulfillment of the project requirement of the Makecourse at the University of South Florida (www.makecourse.com)

One (1) Arduino Uno

One (1) Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface - PCA9685

Two (2) MG995 Metal Gear Servo

One (1) SG90 Servo

One (1) MTS-101 2 Terminal 2 Position SPST Mini Miniature Toggle Switch

One (1) KCD1-101 6A 250VAC 10A/125V AC 2 pin Rocker Switch

One (1) Lysol Disinfectant Spray To Go, Crisp Linen, 1 Ounce

One (1) USB Battery Bank

One (1) Male USB Type-A to DIP adapter

One (1) PLA Filament 1.75mm 1kg Spool

Four (4) M3 x20mm Hex Socket Flat Head Countersunk Bolts

Six (6) M3 x16mm Hex Socket Flat Head Countersunk Bolts

Eight (8) M3 x12mm Hex Socket Flat Head Countersunk Bolts

Twenty (20) M3 Nuts

Eight (8) M3 Nylon Standoff Male to Female 6mm+6mm

Four (4) M3 Nylon Nuts

Eight (8) M3 x6mm Nylon Screws

Two (2) M2 x10mm Hex Socket Flat Head Countersunk Bolts

One (1) M2 x6mm Hex Socket Flat Head Countersunk Bolt

Three (3) M2 Nuts

Sixteen (16) M1.2 x5mm Phillips Head Micro Screws

One (1) Paperclip

Seven (7) Jumper Wires 150mm

22G Solid Core Hookup Wire

Download the attached files and 3D print them.

Component List:

Enclosure

Enclosure Lid Left

Enclosure Lid Right

Lid Door

Arduino and Servo Board Bracket

Arm

Lysol Servo Bracket

Lysol Can Holder

Plunger

Connecting Rod

Attach one MG995 servo to the Lysol Servo Bracket using four M3 x16mm bolts and four M3 nuts.

Attach one M2 x6mm bolt to the Lysol Servo Bracket using one M2 nut.

Attach the SG90 gear adapter to the Lysol Servo Bracket using four M1.2 x5mm Phillips Head Micro Screws.

Attach the round gear adaptor to the MGS995 Servo using the included screw.

Attach the one end of the connecting rod to the round gear adaptor using one M1.2 x5mm Phillips Head Micro Screw.

Place the plunger into the slot in the Lysol Servo Bracket and attach it to the other end of the connecting rod using one M1.2 x5mm Phillips Head Micro Screw.

Attach the SG90 servo with the wires facing the back to the enclosure using two M2 x10mm Hex Socket Flat Head Countersunk Bolts and two M2 Nuts.

Pass the wire for the MG995 Metal Gear Servo that is attached to the Lysol Servo Bracket through the bottom front hole in the wall dividing the enclosure.

Attach Lysol Servo Bracket to SG90 Servo using the included screw.

Place the Lysol can into the Lysol Can Holder.

Attach the Lysol Can Holder to the Lysol Servo Bracket using four M1.2 x5mm Phillips Head Micro Screws.

Attach the arm to the round MG995 gear adapter using four M1.2 x5mm Phillips Head Micro Screws.

Attach the round gear adapter with the arm attached to the MGS995 servo.

Mount the MG995 servo with the arm attached to the enclosure using four M3 x16mm Hex Socket Flat Head Countersunk Bolts and four M3 Nuts.

Attach the Arduino Uno to the Arduino Bracket using four M3 Nylon Standoffs Male to Female 6mm+6mm and four M3 x6mm Nylon Screws.

Attach the Adafruit 16-Channel 12-bit PWM/Servo Driver to the Arduino Bracket using four M3 Nylon Standoffs Male to Female 6mm+6mm, four M3 Nylon Nuts, and four M3 x6mm Nylon Screws.

Download the attached sketch and upload it onto the Arduino.

Connect the SG90 servo to channel 0 on the Servo Board.

Connect the MG995 Metal Gear Servo mounted to the Lysol Servo Bracket to channel 1 on the Servo Board.

Connect the MG995 Metal Gear Servo with the arm mounted to it to channel 2 on the Servo Board.

Connect the Servo Board to the Arduino as shown in the wiring diagram.

Connect the Door Lid to the Left Lid using two M3 x12mm Hex Socket Flat Head Countersunk Bolts and two M3 Nuts.

Solder ~8 cm of 22g solid core hookup wire to the MTS-101 2 Terminal 2 Position SPST Mini Miniature Toggle Switch.

Push the MTS-101 2 Terminal 2 Position SPST Mini Miniature Toggle Switch through the hole in the left lid and secure it in place with the included nut.

Connect the wires from the MTS-101 2 Terminal 2 Position SPST Mini Miniature Toggle Switch to pins 13 and GND on the Arduino.

Connect the 5V wire of the USB port to the V+ terminal of the Servo Board and the Ground wire of the USB port to the GND terminal of the Servo Board.

Unfold a paper clip to use as the hinge for the Right Lid.

Attach the Right Lid to the Enclosure using the paper clip hinge.

Attach the Left Lid to the enclosure using four M3 x20mm Hex Socket Flat Head Countersunk Bolts and four M3 Nuts.