https://github.com/ccp-eva/bead-dispenser
📿 A USB-powered bead dispenser
https://github.com/ccp-eva/bead-dispenser
3d-printing arduino dispenser diy infrared-sensors stepper-motor stl
Last synced: about 1 month ago
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📿 A USB-powered bead dispenser
- Host: GitHub
- URL: https://github.com/ccp-eva/bead-dispenser
- Owner: ccp-eva
- License: mit
- Created: 2021-01-28T14:43:27.000Z (about 4 years ago)
- Default Branch: main
- Last Pushed: 2024-05-30T14:27:04.000Z (11 months ago)
- Last Synced: 2025-01-25T18:13:15.429Z (3 months ago)
- Topics: 3d-printing, arduino, dispenser, diy, infrared-sensors, stepper-motor, stl
- Language: C++
- Homepage:
- Size: 15.3 MB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# CCP Bead Dispenser
**A DIY USB powered bead dispenser**
> Contains an Arduino sketch that accepts user input (i.e., an integer) and then starts a Nema 14 stepper motor. While the motor rotates, the attached infrared beam module counts objects which break the beam. The motor will stop when the object count equals the provided number by the user. This repo includes all 3d stl files and the construction manual.
---
- [CCP Bead Dispenser](#ccp-bead-dispenser)
- [Demos](#demos)
- [Overview](#overview)
- [Power Supply](#power-supply)
- [What’s happening](#whats-happening)
- [Software](#software)
- [Hardware](#hardware)
- [Hardware Components](#hardware-components)
- [Construction Manual](#construction-manual)
- [Soldering Adafruit Shield on the Arduino](#soldering-adafruit-shield-on-the-arduino)
- [Wiring the Stepper Motor on the Adafruit Shield](#wiring-the-stepper-motor-on-the-adafruit-shield)
- [Check which coils make a pair](#check-which-coils-make-a-pair)
- [Connect the Motor to the Shield](#connect-the-motor-to-the-shield)
- [IR Breakbeam Sensors Connection](#ir-breakbeam-sensors-connection)
- [Add DuPont Connectors to the wires](#add-dupont-connectors-to-the-wires)
- [Connect IR Breakbeam Sensors](#connect-ir-breakbeam-sensors)
- [Threading](#threading)
- [Disk Treatment](#disk-treatment)
- [3D Components Overview](#3d-components-overview)
---
## Demos
https://user-images.githubusercontent.com/9831678/168770235-a08dd8c6-3110-4d33-b17b-d08c474d0a74.mp4
https://user-images.githubusercontent.com/9831678/169273257-3fe446e2-8038-4976-b90e-d845b3b6b8b8.mp4
## Overview
This DIY bead dispenser was used as a companion apparatus for [Sarah Pope-Caldwell’s](https://sarahmichellepope.com/) _Nifty Shifty_ Game Battery. Specifically, the dispenser receives a signal (i.e., a positive integer) from the game, which starts a NEMA 14 stepper motor releasing the number of requested beads. The Arduino sketch was developed by [Steven Kalinke](https://www.eva.mpg.de/de/comparative-cultural-psychology/staff/steven-kalinke/).
Initially, [Dylan T Guenther](https://neurology.ufl.edu/profile/guenther-dylan/) provided us with his modifications from [thingiverse](https://www.thingiverse.com/thing:1771176) dispenser, and then [Raik Pieszek](https://www.eva.mpg.de/comparative-cultural-psychology/staff/raik-pieszek/) made significant modifications to meet our requirements. You will find all the `stl` files within the repository’s [`stl` directory](./stl/).
### Power Supply
We are aware the stepper motor and infrared beams are underpowered by the low voltage/current constraints of the USB 2 protocol (i.e., 5V @ 0.5A). However, throughout the entire hardware engineering process, we tested the dispenser to run with standard USB 2.0 power only and have not observed any drawbacks by under-powering it. The dispenser was also running in high humidity conditions (Congo) for approx. 8h per day over five to six weeks conducted by [Elisa Felsche](https://www.eva.mpg.de/comparative-cultural-psychology/staff/elisa-felsche/). Please refer to the [hardware components](#hardware-components) sections for further details.
### What’s happening
As of Summer 2022, we will work on a version 2 with some soft- and hardware improvements, which are listed below:
#### Software
Check the [issue tab](https://github.com/ccp-eva/bead-dispenser/issues) for open issues!
#### Hardware
- [ ] Use Gewindemuffen, -hülse, or Stangenmutter to replace the plastic pillows, Or better use Gewindestifte/Madenschrauben (M5/60mm) (https://www.fenau.eu/gewindeterminal-mit-innengewinde-linksgewinde-fuer-seil-von-o-3-mm-bis-o-8-mm-v2a.html)
- [ ] Make a design that allows flexible adjustment for the disk hole sizes
- [ ] Heat space for stepper motor
- [ ] Motor Thron
- [ ] Universal mount for the flexible funnel sizes
## Hardware Components
| Component | Description | Approx. Price |
| --------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- |
| Arduino Uno | https://www.amazon.com/Arduino-A000066-ARDUINO-UNO-R3/dp/B008GRTSV6 | |
| Adafruit Motor Shield (2.3) | https://www.amazon.com/Adafruit-Motor-Stepper-Shield-Arduino/dp/B00PUTH3B0 | |
| … alternatively version 2.0 (cheaper) | https://www.roboter-bausatz.de/p/motor-shield-v2.0-fuer-arduino?sPartner=8&gclid=CjwKCAjw1JeJBhB9EiwAV612y0uTo-yNJ4GlXUTTYTJsgV14ZZIoj7A12Il0sJB5pGVDDNJmeDUyexoCM9cQAvD_BwE | |
| Stepper Motor (Nema 14) Option 1 | Polou SY35ST28-0504A (200 steps / 1.8°, 0.1Nm holding torque, 10V @ 0.5A, 20Ω Phase resistance) – [Datasheet](https://www.pololu.com/file/0J688/SY35ST28-0504A.pdf) – https://www.robotshop.com/de/de/10-v-05-a-13-oz-in-zweipoliger-schrittmotor.html | |
| Stepper Motor (Nema 14) Option 2 | Joy-it Nema14-01 (200 steps / 1.8°, 0.1Nm holding torque, 8V @ 0.4A, 20Ω Phase resistance) — [Datasheet](https://joy-it.net/en/products/NEMA14-01) — https://joy-it.net/en/products/NEMA14-01 or https://www.conrad.de/de/p/joy-it-schrittmotor-nema14-01-0-1-nm-0-4-a-wellen-durchmesser-5-mm-2142507.html | |
| Adafruit IR Beam Break Sensor Pair (3mm, preferably with DuPont Connectors) | https://www.mouser.de/ProductDetail/Adafruit/2167?qs=GURawfaeGuCJ0J7vogtCzg%3D%3D | |
| USB Wire (Type B from the Arduino to whatever you need on your computer) | Note, we had some difficulties with USB Adapters, a direct connection is preferred, e.g., USB C to Type B: [USB-Kabel USB 2.0 USB-B Stecker](https://www.conrad.de/de/p/manhattan-usb-kabel-usb-2-0-usb-b-stecker-usb-c-stecker-2-00-m-schwarz-2356814.html) | |
| Pellets | We tested a variety of beads/pellets. A rule of thumb: beads should be a non-reflective surface, as the IR signal can be reflected around the pellet. Wood is good material; we used these wood balls: https://www.holz-allerlei.de/holzkugeln-ohne-bohrung/143/holzkugeln-6-mm-oe-ohne-bohrung?c=34 | |
| Soldering Iron | | |
| Crimp tool and DuPont Connectors | … to easily connect the IR beam break sensors | |
| Threading tap to create threads | … for screws and nuts (M4) | |
## Construction Manual
### Soldering Adafruit Shield on the Arduino
- [Documentation](https://learn.adafruit.com/adafruit-motor-shield-v2-for-arduino/install-headers)
- [Guide](https://learn.adafruit.com/adafruit-motor-shield-v2-for-arduino/install-headers#installing-with-stacking-headers-405903-16)
- Place the Shield stacking headers on the Adafruit shield (terminals are optional for this setup) and solder them its bottom
- You may need to buy stacking headers as the Adafruit shield does not come with them (it did actually for our case)
Soldering stacking headers to the Motorshield (they may come pre-soldered for Motor Shield v.2.3)
### Wiring the Stepper Motor on the Adafruit Shield
#### Check which coils make a pair
Either use a Multimeter and figure out the two wires having the lowest resistance; those make a coil pair. If you do not have a Multimeter, connect their wire tips: Now turn the stepper motor: If the rotation resistance is high, the two cables belong together (i.e., making a coil pair).
#### Connect the Motor to the Shield
Left: Polou SY35ST28-0504A (M1: black, green; M2: red, blue). Right: Joy-it Nema14 (M1: red, gray; M2: yellow, green).
### IR Breakbeam Sensors Connection
Docs & Datasheet: https://www.adafruit.com/product/2167
Left Image: The receiver is on the left; it has three wires. The transmitter is on the right; it has two wires.
#### Add DuPont Connectors to the wires
If your IR break beam sensors came with DuPont (see [JST connector - RE](https://en.wikipedia.org/wiki/JST_connector)) connectors, you can skip this step. If not, use a crimp tool to add crimps.
Left: IR Breakbeam Sensors w/o DuPont Connectors. Right: IR Breakbeam Sensors w/ DuPont Connectors.
### Connect IR Breakbeam Sensors
The **receiver** (photodiode/sensor) has **three** colored wires; connect the
- **black** wire to the ground (there are two, which one doesn’t matter)
- **red** wire to the 5V Pin (**_important!_**)
- **white** wire to Pin 4 in the Digital I/O array
The **transmitter LED** (sender) has **two** colored wires; connect the
- **black** wire to the ground (the one that is left)
- **red** wire to the 3V Pin (**_important!_**)
### Threading
Use **M4 threading taps** for the following 3D components:
| | |
|-|-|
| The four pillars from the **roof** print-out (you may need to get rid of some residuals from the print before). Use a screw (or whatever) to push out residuals from the print. Thread after cleaning. |  |
| The four holes from the **dispenser** holes |  |
| The side of the dispenser. Drill an M4 thread in the side of the dispenser as a fixation for the IR beam breaker |  |
| Finally, drill an M4 thread in the IR break beam transmitter & receiver (this will be screwed together with the dispenser later. |  |
### Disk Treatment
- Depending on the 3D printer, the bottom of the disk may be a bit rough, therefore creating resistance. Use fine sandpaper to reduce friction.
- Depending on the 3D printer, the disk’s hole may be too narrow for the stepper motor’s D-shaft. Roll a thin layer of sandpaper to increase the inner diameter.
Left: Increase inner disk diameter. Right: Sandpaper the bottom of the disk.
## 3D Components Overview
Our model is composed of seven components; these are from bottom to top:
- Box
- Slide
- Door
- Roof
- Dispenser
- Disk
- Funnel
| Component | STL File | Isometric Preview |
|-|-|-|
| **Box** — Housing for the Arduino & Adafruit Shield | [Download](stl/box.stl) |  |
| **Slide** — To fixate the Arduino’s plate with the slide | [Download](stl/slide.stl) |  |
| **Door** — Sliding door that closes the box | [Download](stl/door.stl) |  |
| **Roof** — Coveres the box, and provides a housing for a NEMA 14 stepper motor | [Download](stl/roof.stl) |  |
| **Dispenser** — Holding the disc and provides a tube | [Download](stl/dispenser.stl) |  |
| **Disk** — Revolving magazine to release beads or other objects | [Download](stl/disk.stl) |  |
| **Funnel** — Bead funnel/storage unit | [Download](stl/funnel.stl) |  |
| **Lid** — Get yourself some Pringles. Use the Pringle’s lid to seal the funnel. (optional) | — |  |