topic Re: Encoder Rate Doesn't Work in FIRST Robotics Competition Discussions https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384332#M1237 <HTML><HEAD></HEAD><BODY><P>Thanks Philbot.&nbsp; We were using 1 for averaging in the code we were testing.&nbsp; We will try more than 1 and see what happens.</P></BODY></HTML> Mon, 09 Feb 2009 13:11:50 GMT Steve Hyde 2009-02-09T13:11:50Z Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384329#M1234 <HTML><HEAD></HEAD><BODY><P>Having trouble using the rate output of the encoders.&nbsp; Using the Encoder Example vi, going a constant speed, the rate in one direction is zero and the rate in the other direction is intermittently zero.&nbsp; The pulses coming out of the encoder are accurate.&nbsp; Any hints or is this a bug with the encoder vi?</P></BODY></HTML> Sat, 07 Feb 2009 16:55:20 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384329#M1234 Steve Hyde 2009-02-07T16:55:20Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384330#M1235 <HTML><HEAD></HEAD><BODY><P>The encoder rate works if deployed at 1x or 2x but not at 4x.&nbsp; The behavior at 4x deployed remains the same as described.&nbsp; ???&nbsp; What is wrong with 4x?&nbsp; (Digging into the Encoder Get VI, the 4x is different from the 1x &amp; 2x.)</P></BODY></HTML> Sat, 07 Feb 2009 19:07:56 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384330#M1235 Steve Hyde 2009-02-07T19:07:56Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384331#M1236 <HTML><HEAD></HEAD><BODY><P>Are you using averaging?</P><P></P><P>I think I just read that the minimum averaging for 4x encoding is 2 (the default).</P><P>Setting averaging to 1 causes problems.</P></BODY></HTML> Sun, 08 Feb 2009 05:23:36 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384331#M1236 Philbot 2009-02-08T05:23:36Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384332#M1237 <HTML><HEAD></HEAD><BODY><P>Thanks Philbot.&nbsp; We were using 1 for averaging in the code we were testing.&nbsp; We will try more than 1 and see what happens.</P></BODY></HTML> Mon, 09 Feb 2009 13:11:50 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384332#M1237 Steve Hyde 2009-02-09T13:11:50Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384333#M1238 <HTML><HEAD></HEAD><BODY><P>Still can't get 4x to work with averaging greater than 1. 1x &amp; 2x works fine so we're going to stick to 2x.</P></BODY></HTML> Wed, 11 Feb 2009 01:10:39 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384333#M1238 Steve Hyde 2009-02-11T01:10:39Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384334#M1239 <HTML><HEAD></HEAD><BODY><P>Are you using LabVIEW update 3 with the v11 image?</P></BODY></HTML> Wed, 11 Feb 2009 05:43:27 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384334#M1239 sciencewhiz 2009-02-11T05:43:27Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384335#M1240 <HTML><HEAD></HEAD><BODY><P>The default in hardware is 2, but the default on the configure timer VI is 1.&nbsp; That can be a source of confusion.&nbsp; Just make sure you use at least 2 for averaging in 4x mode with the latest update.&nbsp; Before update 3, the rate output of the encoders was not accurate in any mode.</P></BODY></HTML> Wed, 11 Feb 2009 09:12:07 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384335#M1240 DAQjr 2009-02-11T09:12:07Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384336#M1241 <HTML><HEAD></HEAD><BODY><P>I am using software version 3.0a.</P></BODY></HTML> Wed, 11 Feb 2009 13:12:33 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384336#M1241 Steve Hyde 2009-02-11T13:12:33Z Re: Encoder Rate Doesn't Work https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384337#M1242 <HTML><HEAD></HEAD><BODY><P>I was using 4 as the value for averaging during 4x mode.</P></BODY></HTML> Wed, 11 Feb 2009 13:14:55 GMT https://ni.lithium.com/t5/FIRST-Robotics-Competition/Encoder-Rate-Doesn-t-Work/m-p/3384337#M1242 Steve Hyde 2009-02-11T13:14:55Z