Byron [the board]

Byron is based around the ATMEL ATmega8 microcontroller and can be produced using either surface mount [SMD] or through hole components [DIP].

Byron offers either six [in the through hole version] or eight [surface mount] high-resolution analogue to digital [ADC] channels for sensor input, three analogue output channels [PWM] and a set of reconfigurable digital input and output pins. The headers also provide access to a serial port, ground and power connections. A standard 10-pen ISP programming header is provided to be able to use Byron as an AVR programmer. Three jumper pins allow Byron to be:

1] erased and flashed with totally new code [marked P]

2] to function as a low speed programmer [marked L]

3] to jump into the bootloader and load a new application/firmware [marked B]

• diagrams
  
  • surface mount
    

    

    • default configuration

    Top header: G+12345678
    
    [1.GND.2+PWR.3-10:8xADC IN]
    
    Lower header: GRTPPPDDDD
    
    [1.GND.2.RX.3.TX.4.5.6PWM.7-10:DIGITALI/O]
    
    

  • DIP
    

    

    • parts list:
      

      | CP1        10uF               |
      | C2         22 PF              |
      | C3         22PF               |
      | C4         100nF              |
      | I1         ATMEGA8-16PU       |
      | P10        CONN_10            |
      | P11        CONN_10            |
      | P12        CONN_3X2           |
      | P13        CONN_1             |
      | P9         CONN_5X2           |
      | R1         10K                |
      | R2         330R               |
      | R3         330R               |
      | R4         4.7K               |
      | R5         2.2K               |
      | X1         12 MHz CRYSTAL     |
      | X2         USB-MB-H CONNECTOR |
      

… and commandline application to load different applications into Byron [the board] without the need for a programmer or extra hardware.

Applications running on Byron and on the host computer. Software includes:

• Byron himself: for flexible sensor input and control using Pure Data, Open Sound Control (OSC) and SuperCollider.
• straight up HID [Human Interface Device]: for easy sensor input into all applications
• programmer: to program any other AVR microcontroller or compatible board
• others: USB keyboards, mice usw.

• make Byron
  

  Print and etch the board from the KiCad design at:

  https://code.goto10.org/svn/micro\_research/trunk/scrying\_hardware/byron\_001\_dip.brd

  using parts as listed above and following the diagram!

  All hardware available from:

  https://code.goto10.org/svn/micro\_research/trunk/scrying\_hardware/

  Or alternatively purchase a ready made and installed Byron for 18 euros from the : shop

• install Byron
  
  • 1] install the bootloader
    

    Attach a usbasp compatible programmer to Byron's 10-pin ISP header, place the jumper across P [to be programmed] pins and then in the byron/bootloader firmware directory run:

    make flash
    make fuse
    

  • 2] install Byron himself
    

    Place the jumper across B [activate bootloader] pins and the from the byron/bootloader/commandline run the command:

    ./bootloadHID ../../byron/main.hex
    

• change Byron's identity
  

  There are two methods:

  • 1] Use the B] bootload jumper
    

    From the byron/bootloader/commandline run the command:

    ./bootloadHID [hexfile]
    

    For example:

    ./bootloadHID ../../keyboard/main.hex
    

    To install the HID keyboard software.

  • 2] [NEW] Use the commandline menu
    

    

    ./byron.sh 
    

    in byron/bootloader.

• interface Byron with software
  
  • PD
    

    

    Load the Byron extension:

    pd -lib byron byron.help.pd
    

  • SuperCollider
    
  • OSC/other apps
    
• interface with world
  
  • analogue inputs
    
  • analogue outputs
    
  • digital I/O
    

Latest package (hardware and code): http://1010.co.uk/byron002.tar.gz

All open hardware designs: https://code.goto10.org/svn/micro\_research/trunk/scrying\_hardware/

Code: https://code.goto10.org/svn/micro\_research/trunk/byron/

Byron [the bulb]: http://www.cse.psu.edu/~dhking/byron.html

AVR resources: http://www.1010.co.uk/org/avr\_resources.html