HalloWing M4 Animated Eye Candy Bowl · a paper template and use it to make your own PCB mount out of foam core, cardboard or a sheet of plastic, dealers choice! PDF Vector Artwork

HalloWing M4 Animated Eye Candy BowlCreated by Ruiz Brothers

Last updated on 2019-10-16 01:48:16 PM UTC

Overview

Animated Eye UpgradeUpgrade this Haunted Candy Bowl with an Adafruit

HalloWing M4! Use the touch pads to change the side lit

NeoPixel animations! Customize the animated eyes and

trick out your candy bowl to win this year's Halloween!

Magic TouchTouch the pads on the HalloWing M4 to change the

NeoPixel animations. Featured animations include a

beating heart, fading gradients and rainbows!

The Haunted Candy BowlThis project uses the Animated Haunted Candy

Bowl (https://adafru.it/Gbd) from Hyde and Eek

Boutique. It lights up, speaks phrases and features a

mechanical eye that moves side to side.

© Adafruit Industries https://learn.adafruit.com/hallowing-m4-candy-bowl Page 4 of 34

https://learn.adafruit.com/assets/82280



https://www.target.com/p/animated-light-up-eyeball-halloween-candy-bowl-hyde-38-eek-boutique-8482/-/A-54397698

https://www.adafruit.com/product/4300






Eye Candy BowlFor the retail price you get a pretty nice case that looks

pretty cool and has a decent quality – This beats hours

of 3D printing. Plus, it's already designed for a Cyclops!

We just couldn't resist adding the HalloWing M4 to this

thing. The "eye" puns aren't too bad either.

Project Goals

A few points we wanted to hit when making this project.



Fit the HalloWing M4 into the eye socket of the candy bowl using a 3D printed mount.Use the animated eyes and capacitive (cap) touch pads to animate the HalloWing M4's side lit NeoPixel LEDs.Use the existing slide switch to turn off/on the circuit.Make the USB port accessible for reprogramming.

Setup HalloWing M4 with Animated Eyes

Use the link below to launch the learn guide to get your HalloWing M4 setup with the M4 eyes code. Setup is fast andeasy, so once that is done come back here and continue!

https://adafru.it/Gbe


Parts

Here's a list of the parts used in this project:

Adafruit HalloWing M4

https://www.adafruit.com/products/4300 (http://adafru.it/4300)

4400Mah Lipo Battery


40mm plastic convex lens


JST Extension Cable


M2.5 Screw Standoff Kit


Fully reversible USB cable


Adafruit HalloWing M4 Express - ORANGE HALLOWEENEDITION!

OUT OF STOCK

Out Of Stock


https://learn.adafruit.com/adafruit-hallowing-m4/quickstart


https://www.adafruit.com/products/4300








Convex Plastic Lens with Edge

OUT OF STOCK

Out Of Stock

Lithium Ion Battery Pack - 3.7V 4400mAh

$19.95IN STOCK

Add To Cart

JST-PH Battery Extension Cable - 500mm

OUT OF STOCK

Out Of Stock

Black Nylon Screw and Stand-off Set – M2.5 Thread

$16.95IN STOCK

Add To Cart











Software

Configure The Eye

Once you have gone through the HalloWing M4 quick start guide, you'll have the default "blue hazel" eye loaded anddisplaying. Feel free to customize the settings or graphics! Reference the HalloWing M4 learnguide (https://adafru.it/Gbe) to explore all the options.



Quick Start

Plug in your HalloWing M4 via a known good data+power USB cable.Double press the reset button and wait for the NeoPixels to turn green.The HALLOM4BOOT drive should show up on your computer. Download the UF2 file below and drop it onto the root of the HALLOM4BOOT drive.

https://adafru.it/Gbf

https://adafru.it/Gbf

Touch Input

Use the touch pads to change the NeoPixel animations. There are four different programmed NeoPixel animations.Halloween color gradients, beating heart, breath, and rainbow. These will loop and repeat automatically.




https://cdn-learn.adafruit.com/assets/assets/000/082/311/original/EYES_TOUCH.UF2?1570906610

Building from Source

This project uses a build of the M4 eyes from the Adafruit Learning System GitHub repository (repo). For advancedcustomization, use the link below to open the section of the Learn guide that walks through setting up Arduino anduploading the code.

https://adafru.it/G8e

https://adafru.it/G8e

Author Credits: Give shout out to Jonathan Sampson (https://adafru.it/Gbg) and Ladyada for writing the code for thisproject.

Get the code working on the HalloWing M4 before installing into the candy bowl.�


https://learn.adafruit.com/adafruit-monster-m4sk-eyes/building-from-source-code

https://github.com/jonsampson

TearDown

Candy BowlWe'll remove the eye mechanism, two motors and the

candy bowl. Decide if you'd like to use the built-in sound

effects. There's plenty of space inside the base for other

components such as more LEDs!

Bottom ScrewsFlip the bowl over and look on the bottom of the base.

Notice there's a removable door for accessing the

battery. Find the four screws, one on each corner.




Remove BottomUse a screw driver to remove the four screws. The

battery door is secured with a single machine screw.

The slide switch features two modes with the "off" state

being the middle. Save the four bottom screws. Locate

the small gap and use a tool with a thin and flat tip to

pry open the bottom plate. Separate the bottom panel

from the base by pushing out on the edges.

Gut The InsideWith the bottom panel removed, start gutting out the

motors by removing screws. If you like to remove the

internal LEDs, you can use flush cutters to remove hot

glue and pull out the LED bulbs.




Removing BowlThe white candy bowl is secured to the base with three

machine screws. Use a screw driver to unfasten and

remove them. Save the candy bowl and screws for later.

We'll reinstall them after the HalloWing M4 has been

installed.

Removing Eye MechThe eye mechanism is secured with two machine

screws. The eye mechanism uses a piece of string to

pull the eye lids back. Untie the string and remove any

of the mounting bits and screws.

Eyes and MotorsThe HalloWing M4 doesn't quite fit inside the eye

mechanism, so we won't not be using it in this project.

We can save these components for future projects!





Gutted BaseWith all of the components, mounting bits and hardware

screws removed, base is now ready for installing the

HalloWing M4.

Bottom ComponentsThe bottom base plate has a circuit board, IR sensor,

speaker, slide switch and battery holder. There was also

a 2-pin JST connector for the "try me" button switch. I

swapped out the existing wiring for silicone-cover

stranded wires, just for organizational purposes (totally

optional). The slide switch is the only component we'll

be using with the HalloWing M4. This allows a

convenient way to turn off/on the HalloWing M4.




Paper Template

Paper TemplateDon't have access to a 3D printer? No problem! Print out

a paper template and use it to make your own PCB

mount out of foam core, cardboard or a sheet of plastic,

dealers choice!

PDF Vector ArtworkDownload the PDF and print it out on paper. This was

designed to fit on a 8.5in x 11in sheet of paper. The

dimensions of the mount are noted for checking if the

scaling is correct after the print.

https://adafru.it/Gbh

https://adafru.it/Gbh




https://cdn-learn.adafruit.com/assets/assets/000/082/287/original/pcb-mount-template.pdf?1570890784

Foam Core BoardFor this project we cut the shape out of foam core

board. I suggest adhering the paper template over the

work piece first (glue stick). Insert the tip of the blade to

make several incisions and follow the outline. Cutting

curves can be tricky so take your time! A rotary tool with

a drill bit can be used to create the mounting holes.

PCB Mount ScrewsUse the following hardware for mounting the HalloWing

M4 to the mount. Insert the nylon screw through one of

the mounting holes through the top. Hold in place and

install standoff by fastening onto screw thread.

4 x M2.5 x 8mm female to female standoffs

4x M2.5 x 4mm screws

Take caution and be careful when using knifes and operating power tools! For best safety, young makers ought to have adult supervision.�




Test FittingFollow the tear down section before test fitting the cut

piece into the base of the candy bowl. It should have a

snug fit when press fitting it through the eye hole.

Cut PiecesI made several cut pieces before getting the right shape

and fitting. Like stated above, cutting curves can be

rather tricky! A few attempts makes for good practice.

For this small part, cutting pieces by hand beats dealing

with 3D printers or laser cutters.

Lens HolderThe lens holder requires a bit more precision to fit the

lens. If you don't have a 3D printer, you can purchase

the acrylic lens holder from the shop. Longer screws

may be needed to pass through acrylic, pcb and

standoffs.





Clear Acrylic Lens Holder + Hardware Kit for HalloWing

$2.95IN STOCK

Add To Cart




3D Printing

3D PartsSTL files for 3D printing are oriented to print "as-is" on

FDM style machines. Original design source may be

downloaded using the links below.

Slicing PartsThe bowl has a 1.5mm thick shell and it can be printed

without any support material.

PLA filament 220c extruder

0.2 layer height

10% gyroid infill

60mm/s print speed

60c heated bed

https://adafru.it/Gbi

https://adafru.it/Gbi

https://adafru.it/Gbj

https://adafru.it/Gbj

https://adafru.it/Gby

https://adafru.it/Gby




https://a360.co/2mrpOtJ

https://a360.co/2B15Kmd

https://www.thingiverse.com/thing:3916341

PCB MountThe PCB mount features four mounting holes that are

3.5mm(0.14in) in diameter. The center hole has a

diameter of 18mm (0.7in)

Design Source FilesThe project assembly was designed in Fusion 360. This

can be downloaded in different formats like STEP, SAT

and more. Electronic components like Adafruit's board,

displays, connectors and more can be downloaded from

our Adafruit CAD parts GitHub

Repo (https://adafru.it/AW8).




https://github.com/adafruit/Adafruit_CAD_Parts

LensHolder

Lens HolderYou'll need the following hardware to install the lens

holder. These are sourced from the M2.5 nylon standoff

kit.

4x M2.5 x 8mm female to female standoffs


Install StandoffsInsert the M2.5 screw into one of the mounting tabs.

While holding in place, fasten a standoff onto the thread

of the screw.




Lens HolderWe'll need 2x M2.5 x 4mm screws to secure the lens

holder to the PCB. Notice the orientation of the

mounting tabs and the mounting holes on the HalloWing

M4.

Installing Lens HolderPlace the plastic lens over the display. Lay the lens

holder over the lens with the standoffs facing down.

Line up the standoffs with the mounting holes on the

HalloWing M4 PCB.




Installed ScrewsNotice we only have two screws installed. If screws are

installed in the bottom holes, the PCB won't sit flush with

the mount. Two screws are sufficient for keeping the

lens secured in place.

Installed Lens HolderFasten the screws tightly.

Flush Lens8mm tall standoffs have just the right height for the lens

holder.





PCB Mount

PCB Mount ScrewsThe PCB mount needs the following hardware for

installing.

4 x M2.5 x 8mm female to female standoffs


Installing StandoffsInsert the nylon screw through one of the mounting

holes through the top. Hold in place and install standoff

by fastening onto screw thread.




Installed StandoffsTightly fasten the remaining screws and standoffs.

PCB MountThe hole in the center of the mount can be used for

passing wires and cabling through to connect to the

HalloWing M4.





Install HalloWing

Install PCB MountPress fit the mount through the eye socket from the

inside of the base.



Installed MountThe 3D printed PCB mount features a tapered flange

that prevents it from falling out. Optionally hot glue it in

place for extra security.

Install Battery for HalloWing M4Find an empty spot on the bottom base for the battery. I

used mounting putty to secure the battery. Other

options are hot glue and double-sided foam tape. Plug

in the 2-pin JST extension cable.

On/Off Switch WiresIf you'd like to use the existing switch, you can wire it up

to the EN (enable) and GND (ground) pins on the back of

the HalloWing M4 socket headers. Use right-angled

male header pins for a low-profile fit. The length of wire

is about 8 inches.





Slide Switch WiringThe built-in slide switch features two sets of pins. Use

the available pins to connect the EN and GND pins on

the HalloWing M4. Using the middle pin and the one

next. The middle position of the switch is the OFF state.

the LIGHT state will turn the HalloWing M4 ON.

Thread WiresPass the battery and switch cables through the center

hole of the PCB mount. Pull out a good amount of slack

for better handling of the wires.




Connect Switch WireInsert the two header pins from the slide switch to the

EN and GND pins on the back header sockets of the

HalloWing M4.

Connect Battery WirePlug in the JST extension cable to the battery port on

the back of the HalloWing M4. You may need to remove

the screw, it slightly blocks access to the battery JST

port.

Installing HalloWing M4Place the HalloWing M4 PCB over the four standoffs on

the PCB mount. Line up the mounting holes with the

standoffs.

TURN ON the built-in slide switch on the back of the HalloWing M4. It must be on the ON position in order for the circuit to work.�





Secure HalloWing M4Use two M2.5 x 4mm screws to secure the HalloWing

M4 PCB to the standoffs.

Accessible USB PortThe micro USB port is accessible for recharging the

battery and reprogramming the HalloWing M4.

Reinstall Candy BowlUse the three existing screws to reinstall the candy bowl

back onto the base.





Reinstall Bottom PanelFit the bottom panel back onto the base. Make sure to

orient the bottom so the IR sensor is lined up with the

small hole in base. Insert and fasten the four existing

screws to secure the bottom panel to the base.

On/Off Slide SwitchThe LIGHT position will turn the HalloWing M4 on. The

middle position will turn off the HalloWing M4.

Touch TestTouch the four pads on the HalloWing M4 to change the

NeoPixel animations. Don't forget to reinstall the candy

bowl!





Final AssemblyAnd there you have it! A creep tricked out haunted

candy bowl with sweet RGB LEDs and animated eye!

Going Beyond

There's lots of opportunity to go beyond the scope of this project. The stock candy bowl features a built-in speakerand IR sensor. These could be wired into the headers on the back of the HalloWing M4. If you have experienceprogramming, check out the M4 eyes code on Github (https://adafru.it/Gbz). There's also plenty of room inside thebase for extra goodies such as NeoPixel LED strips (https://adafru.it/GbA).



https://github.com/jonsampson/Adafruit_Learning_System_Guides/tree/master/M4_Eyes

https://www.adafruit.com/neopixels

© Adafruit Industries Last Updated: 2019-10-16 01:48:16 PM UTC Page 34 of 34

Documents

HalloWing M4 Animated Eye Candy Bowl · a paper template and use it to make your own PCB mount out of foam core, cardboard or a sheet of plastic, dealers choice! PDF Vector Artwork