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The buttonbox is used for time accurate(1ms) button press registration. We use it to register buttonpresses, soundkey, voicekey signals and to send tone onset, analog output, triggers with the BITSI protocol. It is suitable for Behavioral, EEG, MEG, and fMRI experiments. The buttonbox is connected to a computer with a usb connection.
 
The buttonbox is used for time accurate(1ms) button press registration. We use it to register buttonpresses, soundkey, voicekey signals and to send tone onset, analog output, triggers with the BITSI protocol. It is suitable for Behavioral, EEG, MEG, and fMRI experiments. The buttonbox is connected to a computer with a usb connection.
   −
The output connector has two binary eight bit ports: input and output. The two ports can be used for responses (input) and stimulus triggers (output). Two 8 bits analog outputs and three 8 bits analog inputs. The output connector has a sound and voicekey which triggers when a amplitude reaches a threshold. By using the serial port, the BITSI can be used platform independently: it works on Windows, Linux and Mac OSX. Most programming environments and stimulus packages support serial communication. 
+
The output connector has two binary eight bit ports: input and output. The two ports can be used for responses (input) and stimulus triggers (output). Two 8 bits analog outputs and three 8 bits analog inputs. The output connector has a sound and voicekey which triggers when a amplitude reaches a threshold. By using the serial port, the BITSI can be used platform independently: it works on Windows, Linux and Mac OSX. Most programming environments and stimulus packages support serial communication.
    
== BITSI Protocol ==
 
== BITSI Protocol ==
   −
BITSI stands for Bits to Serial Interface. Because the BITSI is designed to interface both in- and output signals, the 'protocol' is asymmetric: the input and output protocols differ. 
+
BITSI stands for Bits to Serial Interface. Because the BITSI is designed to interface both in- and output signals, the 'protocol' is asymmetric: the input and output protocols differ.
   −
<u>'''Input'''</u>
+
===Input===
    
The input port can be used to interface eight buttons maximally. Button presses are translated to serial output characters/bytes according to the following table:
 
The input port can be used to interface eight buttons maximally. Button presses are translated to serial output characters/bytes according to the following table:
   −
{| border="1" cellspacing="0" cellpadding="0" width="462" style="width:462px;"
+
{| class="wikitable"  
 +
|-
 +
! scope="row" colspan="3" | BITSI Simple
 
|-
 
|-
 
+
! scope="row" width="120px" | Signal/Button
| style="colspan="3";" |  
+
! scope="row" width="120px" | ASCII (rise/fall)
'''BITSI Simple'''
+
! scope="row" width="120px" | Code (rise/fall)
 
+
|-
 +
| 1
 +
| A / a
 +
| 65 / 97
 
|-
 
|-
| style="width:113px;height:22px;" |
+
| 2
'''Signal / Button'''
+
| B / b
 
+
| 66 / 98
| style="width:170px;height:22px;" |  
  −
'''ASCII''' (rising / falling)
  −
 
  −
| style="width:180px;height:22px;" |
  −
'''Code''' (rising / falling)
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 3
1
+
| C / c
 
+
| 67 / 99
| style="width:170px;height:22px;" |
  −
A / a
  −
 
  −
| style="width:180px;height:22px;" |  
  −
65 / 97
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 4
2
+
| D / d
 
+
| 68 / 100
| style="width:170px;height:22px;" |
  −
B / b
  −
 
  −
| style="width:180px;height:22px;" |  
  −
66 / 98
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 5
3
+
| E / e
 
+
| 69 / 101
| style="width:170px;height:22px;" |
  −
C / c
  −
 
  −
| style="width:180px;height:22px;" |  
  −
67 / 99
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 6
4
+
| F / f
 
+
| 70 / 102
| style="width:170px;height:22px;" |
  −
D / d
  −
 
  −
| style="width:180px;height:22px;" |  
  −
68 / 100
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 7
5
+
| G / g
 
+
| 71 / 103
| style="width:170px;height:22px;" |
  −
E / e
  −
 
  −
| style="width:180px;height:22px;" |  
  −
69 / 101
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 1
6
+
| H / h
 
+
| 72 / 104
| style="width:170px;height:22px;" |
  −
F / f
  −
 
  −
| style="width:180px;height:22px;" |  
  −
70 / 102
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| 1
7
+
| A / a
 
+
| 65 / 97
| style="width:170px;height:22px;" |
  −
G / g
  −
 
  −
| style="width:180px;height:22px;" |  
  −
71 / 103
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| Soundkey
8
+
| S / s
 
+
| 83 / 115
| style="width:170px;height:22px;" |
  −
H / h
  −
 
  −
| style="width:180px;height:22px;" |  
  −
72 / 104
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
+
| Voicekey
SoundKey
+
| V / v
 
+
| 86 / 118
| style="width:170px;height:22px;" |
  −
S / s
  −
 
  −
| style="width:180px;height:22px;" |  
  −
83 / 115
  −
 
   
|-
 
|-
| style="width:113px;height:22px;" |
  −
VoiceKey
  −
  −
| style="width:170px;height:22px;" |
  −
V / v
  −
  −
| style="width:180px;height:22px;" |
  −
86 / 118
  −
   
|}
 
|}
    
This means that when signal 1 gets active(button press), a capital A will be sent to the serial port. A lowercase 'a' will be sent when the signal is deactivated(button release). Mechanical buttons can be connected directly.
 
This means that when signal 1 gets active(button press), a capital A will be sent to the serial port. A lowercase 'a' will be sent when the signal is deactivated(button release). Mechanical buttons can be connected directly.
   −
<u>'''Output'''</u>
+
===Output===
    
Output knows two protocols: '''BITSI simple''' or '''BITSI extended'''. To enter a certain protocol two buttons have to be pressed when the BITSIbox is powered. '''Press button H and A for simple mode and H and B for extended mode.'''
 
Output knows two protocols: '''BITSI simple''' or '''BITSI extended'''. To enter a certain protocol two buttons have to be pressed when the BITSIbox is powered. '''Press button H and A for simple mode and H and B for extended mode.'''
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The '''extended''' protocol uses two bytes(or two characters), this combination can access two analog outputs and a tone generator. The first byte selects the output. The second byte determines the value written to this output.
 
The '''extended''' protocol uses two bytes(or two characters), this combination can access two analog outputs and a tone generator. The first byte selects the output. The second byte determines the value written to this output.
   −
 
+
{| class="wikitable"  
 
+
|-
{| border="1" cellspacing="0" cellpadding="0" width="434" style="width:434px;"
+
! scope="row" colspan="3" | BITSI Extended
 
|-
 
|-
 
+
! scope="row" width="120px" | Function
| style="colspan="3";" |  
+
! scope="row" width="150px" | Byte 1 (ASCII/code)
'''BITSI Extended'''
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! scope="row" width="150px" | Byte 2
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Marker Out
'''Function'''
+
| M / 77
 
+
| Marker Value
| style="width:161px;height:22px;" |
  −
'''Byte 1 (ASCII / code)'''
  −
 
  −
| style="width:151px;height:22px;" |  
  −
'''Byte 2'''
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Pulse Out
Marker out
+
| P / 80
 
+
| Marker Value
| style="width:161px;height:22px;" |  
  −
M / 77
  −
 
  −
| style="width:151px;height:22px;" |
  −
Marker value
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Pulse Time
Pulse out
+
| T / 88
 
+
| ms before pulse reset
| style="width:161px;height:22px;" |
  −
P / 80
  −
 
  −
| style="width:151px;height:22px;" |  
  −
Marker value
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog Out 1
Pulse time
+
| Y / 89
 
+
| Analog Output Value
| style="width:161px;height:22px;" |
  −
T / 88
  −
 
  −
| style="width:151px;height:22px;" |  
  −
ms before pulse reset
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog Out 2
Analog out 1
+
| Z / 90
 
+
| Analog Output Value
| style="width:161px;height:22px;" |
  −
Y / 89
  −
 
  −
| style="width:151px;height:22px;" |  
  −
Analog output value
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Tone
Analog out 2
+
| T / 84
 
+
| Start Tone
| style="width:161px;height:22px;" |
  −
Z / 90
  −
 
  −
| style="width:151px;height:22px;" |  
  −
Analog output value
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Detect Sound
Tone
+
| D /
 
+
| S / 83
| style="width:161px;height:22px;" |
  −
T / 84
  −
 
  −
| style="width:151px;height:22px;" |
  −
Start tone
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Detect Voice
Detect Sound
+
| D /
 
+
| V / 83
| style="width:161px;height:22px;" |
  −
D
  −
 
  −
| style="width:151px;height:22px;" |
  −
S / 83
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Calibrate Sound
Detect Voice
+
| C /  
 
+
| S
| style="width:161px;height:22px;" |
  −
D /
  −
 
  −
| style="width:151px;height:22px;" |
  −
V / 83
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Calibrate Voice
Calibrate Sound
+
| C /
 
+
| V
| style="width:161px;height:22px;" |
  −
C /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
S
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog In 1
Calibrate Voice
+
| A /  
 
+
| 1
| style="width:161px;height:22px;" |
  −
C /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
V
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog In 2
Analog in 1
+
| A /  
 
+
| 2
| style="width:161px;height:22px;" |
  −
A /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
1
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog In 3
Analog in 2
+
| A /  
 
+
| 3
| style="width:161px;height:22px;" |
  −
A /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
2
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| Analog In 4
Analog in 3
+
| A /  
 
+
| 4
| style="width:161px;height:22px;" |
  −
A /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
3
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| LEDs Off
Analog in 4
+
| L /  
 
+
| X
| style="width:161px;height:22px;" |
  −
A /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
4
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| LEDs Input
LEDs off
+
| L /  
 
+
| I
| style="width:161px;height:22px;" |
  −
L /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
X
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
| LEDs Output
LEDs input
+
| L /  
 
+
| O
| style="width:161px;height:22px;" |
  −
L /
  −
 
  −
| style="width:151px;height:22px;" |  
  −
I
  −
 
   
|-
 
|-
| style="width:122px;height:22px;" |
+
|}
LEDs output
  −
 
  −
| style="width:161px;height:22px;" |
  −
L /
  −
 
  −
| style="width:151px;height:22px;" |
  −
O
     −
|}
+
== Port Settings ==
   −
<u>'''Trigger port settings'''</u>
+
===Trigger port ===
   −
[[File:Connector.png|300x300px|Connector.png]]
+
[[File:Connector.png|thumb|300x300px|Schematic view of the 25 pins connector]]
    
The 25 pins female connector has 8 inputs and 8 outputs, respectively 1-8 are inputs and 9-16 are outputs. Three analog input with an analog to digital convertor of 12 bit, pins 17,18,20 and 21. Two analog outputs with an digital to analog convertor of 12 bits on pins 22 and 23.
 
The 25 pins female connector has 8 inputs and 8 outputs, respectively 1-8 are inputs and 9-16 are outputs. Three analog input with an analog to digital convertor of 12 bit, pins 17,18,20 and 21. Two analog outputs with an digital to analog convertor of 12 bits on pins 22 and 23.
   −
<u>'''Serial port settings'''</u>
+
===Serial port===
    
Our hardware design allows to be connected to the computers USB and emulates a serial communication Port.
 
Our hardware design allows to be connected to the computers USB and emulates a serial communication Port.
   −
{| border="1" cellspacing="0" cellpadding="0"
+
{| class="wikitable"
 
|-
 
|-
|  
+
| Baudrate
'''Baudrate'''
+
| 115200
 
+
|-
| style="width:69px;" |  
+
| Parity
115200
+
| None
 
   
|-
 
|-
|  
+
| Data bits
'''Parity'''
+
| 8
 
  −
| style="width:69px;" |
  −
none
  −
 
   
|-
 
|-
|  
+
| Stop bits
'''Data bits'''
+
| 1
 
  −
| style="width:69px;" |
  −
8
  −
 
   
|-
 
|-
|  
+
| Flow control
'''Stop bits'''
+
| None
 
  −
| style="width:69px;" |
  −
1
  −
 
   
|-
 
|-
|
  −
'''Flow control'''
  −
  −
| style="width:69px;" |
  −
none
  −
   
|}
 
|}
   −
== USB-Com port settings ==
+
=== USB-Com port ===
    
1.Connect the BITSIbox to your computer using the USB cable.
 
1.Connect the BITSIbox to your computer using the USB cable.
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Always connect the usb device to the same port and your settings will be remembered.
 
Always connect the usb device to the same port and your settings will be remembered.
   −
== TSG ButtonBox hardware 2013 ==
+
== Software Settings ==
 
  −
Find the hardware design here&nbsp;[[Buttonbox 2013 Hardware|Buttonbox_2013_Hardware]]
  −
 
  −
== TSG ButtonBox software 2013 ==
  −
 
  −
Find the code here [[Media:BITSI_tempalte2015_duemilanove.zip]]
     −
== Presentation Settings ==
+
=== Neurobs Presentation ===
    
The experiment files needs a few settings for the device to work:
 
The experiment files needs a few settings for the device to work:
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|}
 
|}
   −
== Buttonbox in Python and PsychoPy ==
+
=== Python/PsychoPy ===
    
Download this site package to use the buttonbox: [https://pypi.python.org/pypi/RuSocSci rusocsci]
 
Download this site package to use the buttonbox: [https://pypi.python.org/pypi/RuSocSci rusocsci]
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For more documentation click here: http://pythonhosted.org//RuSocSci/index.html
 
For more documentation click here: http://pythonhosted.org//RuSocSci/index.html
   −
== Matlab Settings ==
+
=== Matlab ===
    
  <nowiki>
 
  <nowiki>
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end
 
end
 
</nowiki>
 
</nowiki>
 +
 +
== Downloads ==
 +
 +
=== Hardware Design ===
 +
*[[Buttonbox 2013 Hardware|Buttonbox 2013 Hardware Design]]
 +
 +
=== Software ===
 +
 +
*[[Media:BITSI_tempalte2015_duemilanove.zip|Code Template 2015 (Duemilanove)]]

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