4.1 iGEM Computer Board
For Helix dispensers, the iGEM board must have jumpers on each of the 2- pin connectors
SW13A to D, and SW14A to D. Eight jumpers (part number 4043601) are required. If these
jumpers are not in place, WIP communications through the Helix ISB board will be disrupted,
resulting in error code 59.
See the iGEM board in Section 4.2 for the North American (NA) version and Section 4.3 for the
IEC version.
Processor Activity Indicator
DS1: Red (Heartbeat) LED indicates processor activity. It will be blinking on and off at a steady
rate as long as the processor is running properly.
Power Indicators
These LEDs only indicate the presence of a voltage. They do not assure that the levels are
correct.
DS6: Green LED indicates that the board is connected to power source on its 24VDC input line.
DS7: Green LED indicates that the board is generating 5VDC to power the logic.
DS8: Green LED indicates that the board is generating 8VDC for use on board and to power
associated assemblies.
DS13: Green LED indicates that the board is generating 15VDC which is used to power
the attached WIPs.
DS14: Green LED indicates that the board is generating 5VDC for use onboard.
Communication Indicatorss
POS Communications:
DS5: Red LED indicates activity on the Host Receive Line. The LED is on when the line is low.
DS12: Green LED indicates activity on the Transmit Line. The LED is on when the line is low.
Display Bit Bus Side 1 and 2 Communications:
DS3: Red LED indicates activity on Receive Line. The LED is on when the line is high.
DS9: Green LED indicates activity on the Transmit Line. The LED is on when the line is high.
WIP (Pulsers) Communications:
DS4: Red LED indicates activity on Receive Line. The LED is on when the line is low.
DS11: Green LED indicates activity on the Transmit Line. The LED is on when the line is low.
CAN Bus Communications:
DS2: Red LED indicates activity on Receive Line.
DS10: Green LED indicates activity on the Transmit Line.
These two LEDs flash very briefly, for example, at Authorize, PTS selection, or CAT activity.
In addition, refer to the iGEM Function Programming manuals WM048524 NA version and
WM048525 IEC version for details on iGEM functions and statistics.
WM048523 Rev 08 01/2019 31
4 Board Layout and Connector Descriptions
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