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Pete Covert
Приєднався 20 бер 2006
Night Crawler Weapon Test: RPM & Current Draw
Here's how I test my bots to better understand current draw, weapon speed, and component performance. In this video, I'm testing Night Crawler before the Motorama 2024 competition. The bot is bolted to a heavy base for safety.
Since I'm running a relatively small battery (1300mAh, 6s), I can't run the weapon throttle full blast for 3 minutes. Theoretically, I need to average 26amps continuous to burn through 1300mAh in three minutes. 20 amps is a good target to leave some wiggle-room.
The test hardware here runs the throttle in 20% increments, for 30 seconds each. This lets me know what to expect in terms of current draw and RPM. This also runs the weapon for 2.5 minutes, which is a good stress test. I also measure temperature of the motor, speed controller, and bearings after each test run.
After these tests, I decided to configure the controller for 60% "Low Speed" and 80% "High Speed" settings. Past competitions have taught me that 80% throttle is almost too much, the gyro forces cause some real driving challenges. I'll save that 80% (or 100%) throttle for those truly difficult opponents.
Learn more about Night Crawler here:
TeamCosmosBots
www.teamcosmos.com
Since I'm running a relatively small battery (1300mAh, 6s), I can't run the weapon throttle full blast for 3 minutes. Theoretically, I need to average 26amps continuous to burn through 1300mAh in three minutes. 20 amps is a good target to leave some wiggle-room.
The test hardware here runs the throttle in 20% increments, for 30 seconds each. This lets me know what to expect in terms of current draw and RPM. This also runs the weapon for 2.5 minutes, which is a good stress test. I also measure temperature of the motor, speed controller, and bearings after each test run.
After these tests, I decided to configure the controller for 60% "Low Speed" and 80% "High Speed" settings. Past competitions have taught me that 80% throttle is almost too much, the gyro forces cause some real driving challenges. I'll save that 80% (or 100%) throttle for those truly difficult opponents.
Learn more about Night Crawler here:
TeamCosmosBots
www.teamcosmos.com
Переглядів: 278
Відео
Night Crawler Vs RoboCat - June 1st NHRL Teams Event
Переглядів 388Місяць тому
Fight commentary for my first fight at the June 1st NHRL Teams Event. Night Crawler was up against RoboCat, a 4wd vertical spinner with a mean looking weapon. Stay tuned for my next fight against Caldera 12! Original footage on the NHRL channel: ua-cam.com/users/live0acFNk5a_Z4?si=bHDlePw1QweioEhf&t=6539 Full June 1st Stream: ua-cam.com/users/live0acFNk5a_Z4?si=bHDlePw1QweioEhf Information abou...
Night Crawler June 1st Promo
Переглядів 3482 місяці тому
Come June 1st, the super group "The Hip Replacements" will be storming Norwalk. We're coming in under the radar, and fully prepared to kick some ass.
Heli Skiing - 2024 - Day 1
Переглядів 2443 місяці тому
Near Alyeska. SIlverton Mountain Guides. Quick edit, more to come.
Night Crawler Teardown
Переглядів 4,6 тис.6 місяців тому
A quick overview and teardown of Night Crawler 2.2. Night Crawler is a 12 pound combat robot that has competed since 2020. Night Crawler attends: Motorama: groups/NorthEastRoboticsClub NHRL: NHRL.io Find out more at about Night Crawler & Team Cosmos at: Facebook: TeamCosmosBots Website: www.teamcosmos.com Music: J-Cut & Kolt Siewerts - The Flute Tune (Soulpride Remix) ...
BLHeli32 Vs AM32 Testing
Переглядів 2 тис.7 місяців тому
Some low speed tests comparing BL-Heli32 firmware to AM32. Same drive motors, ESCs, with minimal difference between bots. AM32 performs better at low speeds, making the bot much more controllable. Both bots are using Flycolor 50 amp "Francy 2" ESCs. One bot has the original BL-Heli32 firmware on it, the 2nd bot was reflashed with AM32 version 2.05. More info at TeamCosmosBots
Solaris Vs Dent - Motorama 2003
Переглядів 1818 місяців тому
Going into the archives, here is my fight against Sam Hanson's 12 pound robot "Dent".
Cabin Time Lapse
Переглядів 779 місяців тому
We left a trailcam out last year near the cabin set to take a photo every hour. Here is a time lapse of all the photos taken around noon. You can spot a wolf on the lake on 12/4, snow mobile tracks near the beginning of March, the tree felling in July, and more.
Brushless Motor Tester
Переглядів 20711 місяців тому
A quickly built device that will drive a brushless motor in a repeatable manner. This will be used to run a series of tests to better understand how different scenarios impact performance. In this video it's running at 20, 40, 60, 80, and 100% throttle for two seconds each, before shutting off. I'll change it to run 30 seconds at each of those throttles while measuring current draw, voltage sag...
Night Crawler Internals
Переглядів 1,1 тис.Рік тому
A quick peek at the internals of Night Crawler, along with one of the drive modules.
Night Crawler 2.0 Weapon Tests
Переглядів 547Рік тому
I wanted to capture some data around RPM and current draw at various speeds. Efficiency really drops off at around 60% throttle. I assume the beater bar aerodynamics (or lack there-of) play a large role in this. I'm using a similar weapon motor, controller, and beater bar as version 1.0. The current draw matches up well, the new Cobra motor is a little more efficient. Unfortunately I didn't rec...
night crawler looks like the beginner battle bot in a battle bots game
the drive setup is so cool
i enjoyed the video
hahaha
I've always wanted to build a drum spinner. Unfortunately I'm still working on my first robot a sportsman antweight (UK antweight, so 150g max)
The ring light is showing weapon power/PWM requested from the receiver/transmitter? I love how this shows the exponential relation between sustaining speed and current/power draw. 4k rpm -> ~2.5A, 6.3k rpm -> ~6.3A, 8.8k rpm -> ~14.5A, 10.5k rpm -> ~23A, 11.1k rpm -> ~30A So for every 2k rpm increase you're about doubling the power required. Very informative!
The receiver doesn't come into play here. The ring light is sending out the PWM signals itself, that way it's completely repeatable each time. Originally I was manually moving the throttle, but it was hard to be consistent between runs.
@@PeteCovert super cool. i bet you could productize that
Super interesting perspective. Like a DVD with the bonus features back in the day
Well Done!
Awesome few hits there. Too bad about the magic smoke. Could you have turned off your dual rates to be a bit faster or would that just lead to uncontrollable drive?
There's a fine line between "not fast enough" and "too fast". I think I had the dual rates tuned well this time around (40% max forward), no more wheelie-ing or accidental inverting. Perhaps with a bit more practice/self-control I could speed things up. But this time around I made sure I couldn't shoot myself in the foot.
Great job representing for Colorado!
when I used blheli32 the bot would always twitch backwards after it advances forwards. I run a relatively low reduction and can confidently say how much better AM32 is for drive purposes. I use tekko 45a ESCs. The disadvantage is there's less settings and using an ST link to directly reprogram is hard, but it's made the world of a difference. My bot is built with drive in heavy consideration, so it's cool to see similar results.
Luckily more and more ESCs are shipping with AM32 already on them, so you don't have to worry about getting the bootloader on there via STLink.
you're the only ones on the radar, everyone else uses GPS and googlemaps nowadays, get with the times old man! (Love it, see you there!)
Ha! Can’t wait to see what you show up with.
Space Crawler?
Ha ha that was great!
❤
Shoulda been playing night crawler by judas priest :-)
Like this? ua-cam.com/video/c9xiG_IGER0/v-deo.htmlsi=s8dWiRokXFj263lh
Tortoise in the thumbnail
I'm imagining setting the board down to put it on - and then watching it slide away down the mountain.
Envious, Pete!!
Booster is such an awesome bot. That thing is so powerful would love to build something similar.
Looks awfully close to a robot with a copper drum
Show it on a popcorn ceiling. Also, to transition from wall to ceiling
Australian robot combat:
So that’s why Death Roll was unprepared in its debut season- it needed time to adjust!
Love it
This sucks.
Take my upvote and get out.
This is awesome.
good robot man nice!
Dang, nice!
Nice.... tjat is what I am looking for.... still struggling to flash my first BL Heli to AM32...
Ludacris speed!
I really like the ring gears on the drive and the nicely protected 1st gear stage instead of using an exposed chain/belt, looks very robust!
Probably I missed something, but where the battery goes?
The battery is visible at 0:30, it’s a 6s 1300mAh MaxAmps.
Ah yes, nothing like watching a man polish his shaft.
Wondering if using a higher pole count motor would give better control at lower speeds, regardless of the firmware. (Assuming such a motor is available in a similar form factor) My line of thinking here is that you'd have more switching per revolution, similar to at higher gear ratio.
It seems logical. The motor would have to move fewer degrees in order to get EMF.
Those motors already have 14 poles? There are higher ones?
Don't forget to remove the weapon lock before the match starts.
I'm never going to live that down, am I?
Solid advice right here.
@@PeteCovertprobably not
Every part of this is so slick. Well done!
beautiful, that custom gearbox blows my mind
It definitely took a few tries to get right.
Awesome bot!
Porque o Mega/Gigabyte está tão resistente, ele não é assim no Batlebots?
When gygabyte wasnt maded of cookies
Wow Thanks!
feel free to reflash that 160a flycolor to am32 ^__^
Hmm. That would be interesting. I'm not sure if I have that or if Chad does...
Solaris was an incredible robot, do you still have it and it’s bigger brother?
I do still have Solaris 1 & 2. It's sitting on a shelf, reminding me of my early robotic combat days. Helios was sold via auction many years ago and disappeared completely.
nhrl scripted evidence
Neat project! Do you plan on publishing your findings anywhere?
The plan is to publish a video with an overview, and then right up the results more completely and share it that way too.
That is slick! Great job.
Thanks Brendan!
You've taken animatronics to the next level.