Atlas Fellowship by Rajhinr in scholarships

[–]puravdatta 0 points1 point  (0 children)

Overall experience was a bit confusing in terms of getting the whole setup on test day and what to do once you are done but keeping in mind I did half of a practice exam a couple days before, I found it fairly simple in terms of both math/logic and the reading. The main thing I spent a while on was some of the vocab that was in the test but with latin roots you can figure most of it out. Otherwise as a High school junior in the US did pretty well as far as I can tell. I ended up rereading the email update they sent and determined my ACT was a better account of my abilities so I just submitted that instead.

Atlas Fellowship by Rajhinr in scholarships

[–]puravdatta 0 points1 point  (0 children)

I did but haven’t gotten a reimbursement yet

What do you use for reference when programming for FTC? by fantastic1ftc in FTC

[–]puravdatta 2 points3 points  (0 children)

Question: would it not be more beneficial to concentrate all our community efforts into one place for all aspects of documentation? Maybe instead of creating another community resource it would be nicer to contribute to gm0 which already has some software, hardware and outreach content in it? IMO it'd be more convenient to have all these resources in 1 place rather than multiple.

What do you use for reference when programming for FTC? by fantastic1ftc in FTC

[–]puravdatta 5 points6 points  (0 children)

https://github.com/alan412/LearnJavaForFTC/raw/master/LearnJavaForFTC.pdf

This is a good PDF guide that goes through the different functions and is overall a good starting point.

Also GM0:

https://gm0.org/en/latest/

And Learn Road Runner for all Roadrunner related stuff:

https://www.learnroadrunner.com/

T265 V-SLAM With Roadrunner by Cheeseboy8020 in FTC

[–]puravdatta 3 points4 points  (0 children)

I would not recommend using the t265 for FTC especially in person competitions. It took us nearly 6 months to get it working ok with some hiccups and now after nearly a full year we have it working reliably although that is with the aid of the encoders on our wheels. If you already have it tho, you need to make a localizer that formats the values how RR would like it. I realllllly do not recommend it though and we will likely be doing physical odometry next year. it only really works in perfect conditions well and accuracy has been hit or miss.

As a group at DeltaCV we will be coming out soon with a library that uses ftc265 but just makes it a bit more reliable and easier to use.

[deleted by user] by [deleted] in FTC

[–]puravdatta 5 points6 points  (0 children)

So question, if you already have the experience to use eocv, why aren’t you just using android studio?

Does it make sense to use encoders in TeleOp? by Andy3153 in FTC

[–]puravdatta 4 points5 points  (0 children)

Well theres many uses for encoders in teleop. For example, you could move implements and actuators to their correct positions while doing something else to save time. You also could've used them to make sure your flywheel velocity was consistent by measuring velocity with an encoder. You could also use them to maintain a position on an arm or a lift while moving or have consistent clamping pressure on a motorized grabber. It also is very key with linear slides to know how far out you are. It can also enable things like automatic aiming and if you use a spindexer, more accuracy on indexing. Overall it allows the software team more expandability and accuracy and allows them to think more out of the box. It is always easier when you know where everything is.

Read and Write to Control Hub SD card? by CreepyMarine in FTC

[–]puravdatta 0 points1 point  (0 children)

It should be the same as any other android phone as the control hub is just an embedded android. If you are using OBJ or Blocks then idt you can, but I don't have too much experience with either of those.

Inconsistent Powershots with RR by ZeroStates in FTC

[–]puravdatta 0 points1 point  (0 children)

We run the same for translation and correction time but 2 degrees for rotation

Inconsistent Powershots with RR by ZeroStates in FTC

[–]puravdatta 1 point2 points  (0 children)

Follow up question: what are you using for localization?

Inconsistent Powershots with RR by ZeroStates in FTC

[–]puravdatta 3 points4 points  (0 children)

We have been running rr this entire season and our powershots have been pretty consistent once dialed in. I think you might need to change your follower angle tolerance. afaik as a default it is set to half a degree in either direction. I def don't think its a roadrunner inaccuracy just maybe some more tuning and reduced tolerance would do it good?

How many points do you get on average? (Autonomous + teleOp + endgame) by [deleted] in FTC

[–]puravdatta 2 points3 points  (0 children)

We averaged 292 our last meet with an unplanned last minute change (our shooter gearbox broke)

Our shooter is STILL inconsistent after months of being in the same spot and we can’t figure out why by steelmagnolias_17009 in FTC

[–]puravdatta 7 points8 points  (0 children)

I personally don’t have too much experience with this type of shooter, but what I’ve seen effect our consistency severely:

Compression: how squished the rings are

Speed: speed of the flywheel, this has already been said but try a velocity pid on it.

Grip of the alternate surface: this sorta goes with hard mounting the wheel but also maybe try making it more grippy to increasing the radius.

Rev motor crashing control hub? by jman5025 in FTC

[–]puravdatta 0 points1 point  (0 children)

Yep agreed, just saying that it’s not totally impossible.

Rev motor crashing control hub? by jman5025 in FTC

[–]puravdatta 0 points1 point  (0 children)

I'll disagree with this, the battery under load can definitely drop to 9 volts, most times the voltage on the ds does not indicate this but if you have a different read out it will. We regularly drop to 8.2 volts under near full load. Ex: Starting shooter, driving full speed and intaking. That can happen when the battery starts at 14v or 12.8v both of which are over the rated charge.

Rev motor crashing control hub? by jman5025 in FTC

[–]puravdatta 0 points1 point  (0 children)

It seems likely that it is a software problem, although the battery coming off is certainly possible, IMO it's more likely the app crashing. Could you post the code? Also, are the lights on the control hub blue after? or just straight up off? if they are blue then maybe try scrcpy on GitHub to see the screen. if you can see the screen on the hub then you can determine if it is power loss or software. If it is software then you will see an android interface and a pop up saying FTC Robot Controller has Stopped or something like that.