Troubleshooting – Pololu Qik 2s12v10 User Manual
Page 32
7. Troubleshooting
The following are some suggestions for ways you can troubleshoot your qik:
• Test for life: With nothing more than power connected, look for a green LED heartbeat. If you do not see
the green LED flashing, you either lack sufficient power (e.g. the voltage is out of range or the power supply
is too noisy) or your qik is damaged. See
for more information about power requirements.
• Test your serial connection: Put on the BAUD1 jumper (with the BAUD2 and CRC jumpers off),
connect your TTL serial control source to the qik’s RX pin or RS-232 serial control source to the qik’s SIN
pin, reset the board, and send 0xBF (191) at 115.2 kbps. You should see the red error LED turn on. If you
then send the command 0x82 (130) at 115.2 kbps, you should see the green LED pulse on (this might be
hard to distinguish from the heartbeat LED), the red LED turn off, and, if you have a connection to the qik’s
serial output, you should receive the byte 0x40 (64). You should try this first with a computer running our
, which will help you determine if the problem is
with your code.
• Test your motors: Try running the qik in demo mode first without motors connected and then with
motors connected (see
for more information about demo mode). If the qik experiences problems
only with motors connected, this is a sign that your problems are likely due to insufficient motor power or
motor-induced noise. Ensure that your motor power supply can provide the current your motors are drawing,
and ensure that your motors are not trying to draw more current than the qik can supply (13 A continuous per
motor channel, 30 A peak). Take steps to limit motor noise (e.g. solder 0.1 uF capacitors across your motor
terminals and use short, twisted motor leads).
If your problems persist, please post on our
or
directly.
Qik 2s12v10 User's Guide
© 2001–2012 Pololu Corporation
7. Troubleshooting
Page 32 of 33