|
|
|
![]() |
|
|||||||
|
||||||||
|
|
Thread Tools |
Rating:
|
Display Modes |
|
#4
|
|||
|
|||
|
Re: I2C Cable Length issue?
I'm putting my vote behind Matt's suggestion. However, just be sure to check that there aren't any shorts between the wires first.
If you have an oscope available, take a look at the wave forms. If they look a bit too curvy (as opposed to square), your RC time constant is too long. You can fix this by reducing C (shortening the cables), or reducing R. To reduce R (increase pull up strength), the header just behind the NXT connector is a convenient place to do it. Try putting a 2k or 3k resistor in parallel to start. Check the schematic for details. |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Multiple I2C sensors | ajd | Sensors | 7 | 20-02-2011 00:55 |
| Sidecar cable length | AdamHeard | Electrical | 7 | 29-01-2010 10:53 |
| i2c output | virtuald | Programming | 16 | 18-01-2009 19:20 |
| I2C tutorials | John Gutmann | Electrical | 3 | 30-07-2005 10:44 |
| I2C? | John Gutmann | Electrical | 3 | 19-07-2005 22:52 |