TEAM 1: Team Handrave
Spring 2014
MEMBERS
- Laura Bloch (lrbloch)
- Sara Roy (slroy)
- Matt Sarett (msarett)
- Dylan Swen (dswen)
PROJECT CONCEPT
HandRave will allow DJs to control the lights in a party setting with dance movements and hand gestures.
The prototype implements hand and foot sensors which are able to communicate wirelessly via Bluetooth
with a set of party lights.
MOTIVATION
Today, DJs are restricted to standing behind a DJ table where they control the music and lights using a controller board.
Though some products allow DJs to use a handheld device, there does not exist anything that allows a DJ to move freely among the partygoers.
Our intent is to free the DJ from the constraints of a DJ booth and allow him to add an element of performance to the show.
COMPETITIVE ANALYSIS
- Numark Orbit Wireless DJ Controller
This gameboy-like controller for lights and music costs about $100. Our product, while comparable in price,
will add a performance aspect to the DJ controls without restricting the DJ to holding a handheld device.
- Standard DMX Light Controller
The above is a typical example of a DMX Light Control Switchboard, usually around $120, which the DJ
can use to control the individual channels connected to the lights. While it allows more customization on the part of the
DJ, it restricts the DJ to standing at his DJ booth, and is less intuitive to use. Our aim is to allow the DJ to move
around and worry less about which channels control which features, but rather to understand basic gestures which will
operate his lights.
TECHNICAL SPECIFICATIONS
Hardware:
- Chauvet SlimPAR 64 (Party Light)
- 180 (60 red, 60 green, 60 blue) LEDS;
- 10mm RGB LEDs produce a powerful, medium speed beam;
- Slim line design is only 2.5" thick;
- Full RGB color mixing and static color access with or without DMX control;
- Built-in power linking;
- Pulse effect with adjustable speed;
- Beam angle: 23 degrees; Field angle: 38 degrees, Lux: 3,640 @ 1m;
- Autoswitching power, 100V-240V 50/60Hz
- Velleman USB to DMX Converter
- connected and powered through USB
- 512 DMX channels with 256 levels each
- 3 pin XLR-DMX output connector
- Windows 98SE or higher compatible
- DLL included to write your own software
- optional 9V battery needed for stand alone test mode
- solid state - fuse protection on DMX output
- dimensions: 4.2 x 4 x 1.75"
- Raspberry Pi
- SoC Broadcom BCM2835 (CPU, GPU, DSP, and SDRAM)
- CPU: 700 MHz ARM1176JZF-S core (ARM11 family)
- GPU: Broadcom VideoCore IV, OpenGL ES 2.0, 1080p30 h.
- 264/MPEG-4 AVC high-profile decoder
- Memory (SDRAM): 512 Megabytes (MiB)
- Video outputs: Composite RCA, HDMI
- Audio outputs: 3.5 mm jack, HDMI
- Onboard storage: SD, MMC, SDIO card slot
- 10/100 Ethernet RJ45 onboard network
- Storage via SD/ MMC/ SDIO card slot
- PLANEX 2 in 1 Micro Size USB Bluetooth 3.0 Adapter
For use with Raspberry Pi
- Supports standard Bluetooth ver 3.0 + HS
- WiFi: IEEE802.11n, IEEE802.11g, IEEE802.11b
(2400 ~ 2480MHz center frequency) band 2.4GHz,
- WiFi:: Bluetooth: Frequency band 2.4GHz (2,412 ~ 2,472 MHz)
- IEEE802.11n/g/b Wi-Fi-capable/Windows 7 (32bit/64bit)
/ Vista (32bit/64bit) / XP SP3 Japanese version (32bit)
- TinyDuino
- Arduino and LilyPad Compatible
- Expandable with Stackable TinyShield Boards, USB, WiFi, Motor Control, GPS, accelerometers
- Optional Battery holder (CR1612-CR1632)
- 0.1" spaced solder holes for external power source
- 20x20mm
- Atmel ATmega328P Microcontroller (same as on the Arduino Uno)
- 20 I/Os (14 Digital, 6 Analog / Digital I/O)
- Arduino Bootloader preprogrammed (uses approx 0.5 KBytes of Flash Memory)
- TinyShield Bluetooth
- Fully certified Class 2 Bluetooth 2.1 + EDR module
- Bluetooth SIG qualified
- UART (SPP or HCI) and USB (HCI only) data connection hardware interfaces
- Onboard embedded Bluetooth stack (no host processor required)
- Programmable low power modes
- Secure communications, 128 bit encryption
- Error correction for guaranteed packet delivery
- UART local and over-the-air RF configuration
- Auto-discovery/pairing requires no software configuration (instant cable replacement)
- Ultra compact size and weight
- Rectangular Version: 20mm x 36mm (.787 inches x 1.417 inches)
- Max Height (from lower bottom TinyShield Connector to upper top TinyShield Connector): 5.11mm (0.201 inches)
- Weight: TBD grams (TBD ounces)
- UART Mode used
- Arduino pins 0 – 1 used by this shield (the standard hardware UART lines)
- Built in level shifters and linear power supply to allow your TinyDuino to run up to 5.0V operation.
Software:
- LibUSB
- C, C++
- Arduino
- Raspbian Wheezy
- DMX Daemon dmx.h
Protocols:
- DMX - Standard protocol for digital communication. Raspberry Pi controls the lights with DMX in our system.
- Bluetooth - Wireless communication protocol. Arduino on glove communicates with light-controlling Raspberry Pi via Bluetooth.
- USB - Serial Communication protocol. USB used for a variety of communication paths including Raspberry Pi to DMX controller, and Bluetooth adapter.
REQUIREMENTS
Functional:
- The first DJ to activate his/her sensors controls all of the lights.
- Additional DJs may join the performance
- These DJs control only the lights closest to them to complement the original DJ’s performance
- Sensors on the lights and other equipment detect movement in their direction
- Lights respond to movements directed at them
- Raspberry Pis will control color, pulse rate, and position of the lights in response to the motion of the DJs
Non-functional:
- The communication should be fast enough that any changes in the lights appear to be occurring instantaneously
Wireless
- Slight movements are not misinterpreted as gestures
- Gestures are handled one at a time by atomic processes
- If connection is lost, light remains at its current setting
RISKS & MITIGATION STRATEGIES
Sensor Range and Accuracy
RF interference on demo day
Usability
TIME LAPSE
Mid-Semester Demo Video
Tests
PRESENTATIONS & VIDEOS
Back to the top of this page
18-549 course home page
