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Reserved for Simple Driving PIDs

Very Simple Very Accurate Chassis Control Code Release

Most everyone struggles with accurate base control in auton. At the highest level, 5225 developed a 3 tracking wheel solution that allowed them to set the world record in programming skills last year, and a handful of teams including 8059 and 139 have replicated their “odometry” based on a document they released last year. Team 5225 Introduction to Position Tracking Document But at a less extreme level, for people just looking to take a step up from move.relative you may like the base control…

Drive Straight PID Loop

I think this worked. This was for encoder backs, so you will need to change nMoterEncoder] to SensorValue() for OSE’s. // function to run drive motors for specified distance in units defined by WHEEL_DIAM then stop the drive motors // +dist = forward, -dist = reverse. void driveDistance(int dist) { nMotorEncoder[drive_LF] = 0; // reset the ime values to 0 nMotorEncoder[drive_RF] = 0; driveLastError = 0; // update driveLastError driveTarget = fabs(dist/(WHEEL_DIAM*PI) * ENCODER_TICKS); // …

Exiting a PID loop

I was very happy to see that almost every important aspect of the robust PID algorithm was already covered by many people. The most important thing to know for PID exit condition, is whether it is intended for user control or autonomous. In case of the user control - PID shouldn’t have its own while loop, but the main while(true) loop that has all the code for checking user inputs would call PID function once in 10-20 mS and let it determine necessary motor power. Variables like accumulated in…

7842F 2018-19 Robot Showcase - Flywheel Control, Odometry, Engineering Journals & More

Hello everyone! I’m Theo from 7842F, and I’m the programmer for our team. I’ve been meaning to make this post ever since worlds, but I haven’t had the time to do so. I now finally have some time before my school starts (I still have 1 week of summer ) to show the VEX community our robot and all the different designs we have implemented to make it. Even though the Turning Point season is way over, the things I will show in this post still applies to this year and VEX in general. Who Are…

Combining turn and linear movement PIDs

I’m assuming the poster is asking about combining PIDs to get an arc with a tank drive. If they are asking about turning while driving w/ holonomic drive, I can make a new post. @DrewWHOOP Motion profiling is unnecessary, you don’t need motion profiling to arc. @Micah_7157X Yes, there are a few ways to do what you want (which I’m assuming is doing some sort of arc): simply add the outputs of a distance and angle PID you can control the arc length and final heading, but can’t really contro…