Innovation First, Inc.
EDU-RC & Motherboard Reference Guide
11.8.2002
www.InnovationFirst.com
Page 10
10. LED Indicators
The Isaac16 EDU Motherboard has the following LED indicators.
Power ON
Solid
Input power is applied. Input Power is controlled from the ON / OFF switch.
Internal Fault
Solid
An internal power fault has occurred. Turn the EDU Robot Controller OFF,
disconnect all wiring except the power, and then turn the EDU Robot Controller
back ON. If this does not clear the Fault, contact Innovation First.
Over Current
Solid
A over current fault has occurred. Turn the EDU Robot Controller OFF,
disconnect all wiring except the power, and then turn the EDU Robot Controller
back ON. If this does not clear the Fault, contact Innovation First.
Search/TX
Blinking Transmitting data packets to Radio Modem.
Valid RX
Blinking Receiving data packets with correct Team Number and Channel Number.
Basic Run
Blinking User CPU is running PBASIC code. The PBASIC code has stopped executing if
the light is ON Solid or OFF.
(This may be disabled in custom PBASIC programs)
Low Battery
Blinking Low battery voltage detected. Replace or recharge battery soon. Low Battery
will remain blinking if the voltage ever drops below 6.5V. The Low Battery
Blink threshold is user definable in the PBASIC code.
Low Battery
Solid
Low battery voltage detected. Replace or recharge battery now. Low Battery
will remain solid if the voltage ever drops below 6.0V.
Search/No Data
Blinking No data packets received or bad data packets received.
Search/No Data
Solid
Radio Modem not found.
Basic Init Err
Solid
PBASIC code did not initialize properly with main CPU. Check your code.
Re-download the “default” code to help verify a coding problem.
Basic Run Err
Solid
PBASIC code has no output. Check code or Power Cycle the unit. You can also
try re-downloading the “default” code to help verify a coding problem.
11. Power Switch (Reset)
The Isaac16 EDU Motherboard has a power switch used to turn the EDU Robot Controller ON or OFF.
The Power Switch can also be used to reset the EDU Robot Controller by “Power Cycling”. Power
Cycling involves turning OFF the EDU Robot Controller and then turning it back ON after a few
seconds. Power Cycling performs a complete hardware Reset of the Robot Controller, including the
Master, Slave, and BS2SX PBASIC processors. Power Cycling also re-initializes the internal radio to
“Search” mode.
12. Circuit Breaker
The EDU Motherboard has an auto resetting circuit breaker to protect the left and center right PWM
pins from short circuits. The center right pin on the PWM connectors is typically used to power servos.
Also, the left RLY pins and the center OSC pin are protected by this circuit breaker.