Tools and Miscellaneous Materials

You probably have, on hand, all the tools to assemble the Voice It, but just in case, you’ll need:

a Phillips Head #1 screwdriver
a Phillips Head #2 screwdriver
a Slot Head #3 screwdriver
a needle-nose pliers or tweezers to retrieve dropped screws
a regular pair of pliers
a pair of scissors

You may want to have on hand a small toolkit like this one.

In addition, you’ll need:

a sheet of paper
a 1.5 inch (35 mm) piece of masking tape
(the picture below also shows the recommended RFID tag reader/writer

List of Materials

Core Electronics/Connectors: (~$70.64)

(1) Arduino MKR Zero with Headers
(1) CZH-LABS Screw Terminal Block Breakout Module Board for Arduino MKR
(1) Micro USB Extension Cable,
(1) Micro SD to Micro SD Card Extension Cable
(1) micro SD card (2Gb or greater)
(1 pkg) multicolored Dupont wire male to female breadboard jumper wires
(1) normal open mini momentary push-button switch with pre-soldered wires
(1) micro-USB cable for high-speed data

Optional: Rechargeable Battery (~$18.95)

(1) Adafruit 328 Battery, Lithium-Ion Polymer, 3.7V, 2500mAh

…. or …

(1) Adafruit 2011 Battery, Lithium-Ion Polymer, 3.7V, 2000mAh

(note that you will need to use the Voice It designer program to create an enclosure bottom STL file to use with the Adafruit 2011 battery)

Optional: Internal Speaker (~$16.18)

(1) Speaker 3-Watt 8 Ohm with JST-PH2.0 Interface
(1) PAM8406 Mini Audio Amplifier Board
(1) JST-PH 2.0 female connector cable
(2) multicolored Dupont wire male to male breadboard jumper wires (included in core components)
(1) 3.5mm 90 Degree Right Angle Male Plug to Bare Wire

Optional: External Speaker (~$6.25)

Optional: RFID Tag Input (~$8.99 + $0.30 per tag + $36.99 for reader/writer)

(1) SunFounder RFID Kit Mifare RC522 RFID Reader Module
(1+) ISO14443A RFID sticker tag 13.56mhz Round 25mm (also, you can look great deals on eBay – both Ntag213 and Ntag215 RFID tags will work)
(1 for all Voice It devices) RFID Smart Card NFC Reader Writer (Set aside any software that comes with the reader/writer. Just plug it into your PC. It is a plug-and-play device.)

Optional: QR Code Input(~$47.29)

(1) Maikrt Embedded QR Code Scanning Module
(1) M5 Rubber Flat Washer 13mm OD 5mm ID 4mm
(4) male to male (or female to male) jumper wires (included in core components)
(4) IDC 2-Wire Crimp Connectors

Common Hardware:(~$10.00)

(4 to 16) #4 x 3/8″ screw sheet metal pan head Phillips
(4 or 5) steel hex nut, zinc plated, #6-32
(4 or 5) #6-32 x 2-inch flat head machine screw
(4) adhesive bumper pads or (4) small round rubber feet
(the bumper pads are 5 times more resistant to sliding than the rubber feet, though they might be just slightly easier for a child to remove)

Project Enclosure: (~$7.00)

3D-Printed

The picture below shows all components for a Voice It that reads RFID tags and plays its voice files through an internal speaker. Depending on the type of Voice It you’re building, the components could be different.

You will only need a few of the male/male and male/female jumper wires shown at the bottom of the picture.

Software:

Arduino IDE

Libraries: MKR Zero Board, SdFat, AudioZero, MFRC522

Voice It

Sound Files
Arduino software

RFID Tag Reader/Writer

NFC Tools – PC/MAC