NZEOD Posted January 18, 2017 Author Share Posted January 18, 2017 (edited) 2 hours ago, arbit said: NZEOD, This is my sketch for the Fan Racer. Feel free to edit your own ideas, and I can upload it and show everyone the result. An open-source kit! Might be fun. Fan_Racer_Fading.ino Sweet! I'll have a play tonight! Ok so standard single colour LEDs Edited January 18, 2017 by NZEOD Quote Link to comment Share on other sites More sharing options...
arbit Posted January 18, 2017 Share Posted January 18, 2017 7 hours ago, NZEOD said: Sweet! I'll have a play tonight! Ok so standard single colour LEDs Yes, to be honest, I simply forgot to install a neo in the engine! The project grew and I hadnt planned for a Trinket at all, until I was outvoted by my wife and son. Quote Link to comment Share on other sites More sharing options...
MechTech Posted January 18, 2017 Share Posted January 18, 2017 Thanks for the links and info guys, I'll check them out! - MT Quote Link to comment Share on other sites More sharing options...
arbit Posted January 23, 2017 Share Posted January 23, 2017 (edited) I have been reading about persistent light. Seems interesting if we can make cannon fire leave a momentary trail. Edited January 25, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
arbit Posted February 4, 2017 Share Posted February 4, 2017 NZEOD, Here is the Yamato sketch. Have at it. Lots of fun in there! Yamato_3_Guns_new.ino Quote Link to comment Share on other sites More sharing options...
arbit Posted February 4, 2017 Share Posted February 4, 2017 Mechtech, This shows details of the Gun Gauge. It seems he just drills holes. Quote Link to comment Share on other sites More sharing options...
derex3592 Posted February 4, 2017 Share Posted February 4, 2017 that is freaking awesome. Wish I had the talent to do fiber optic lighting Quote Link to comment Share on other sites More sharing options...
arbit Posted February 4, 2017 Share Posted February 4, 2017 (edited) It's relatively easy. If you want tips for a project, be our guest. I've come to appreciate that electronics are incredibly stable. It's old school technology. If you follow instructions, it just works. Take arduino, it is rock solid and stable. I have been shocked over and over that it works. Its science, not art. Painting for example needs years of skill and experience. Science can't go wrong unless you screw it up. Edited February 16, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
arbit Posted March 17, 2017 Share Posted March 17, 2017 I feel I got really lucky with Arduino first time out getting the Yamato to work. Getting a DC motor to play nice with lights on the Nautilus has been very challenging. Study continues... Quote Link to comment Share on other sites More sharing options...
NZEOD Posted March 17, 2017 Author Share Posted March 17, 2017 running a motor shield board? Quote Link to comment Share on other sites More sharing options...
arbit Posted March 17, 2017 Share Posted March 17, 2017 (edited) Nope. Just the trinket with a motor-running transistor from Adafruit. Havent learned how to use shields yet. But I assume they are the way to go to avoid clashes in the programming? I may end up powering the DC motor off the trinket, but not actually include it in the sketch. The DPDT switch would be manual to open and close the wings. Edited March 17, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
arbit Posted March 19, 2017 Share Posted March 19, 2017 (edited) I'm looking at these belt drives to rotate the platform on the hanger. Any suggestions what kind of gears could i use to open those doors? Thats an online photo. Not mine. Edited March 19, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
MechTech Posted March 19, 2017 Share Posted March 19, 2017 (edited) Sorry Arbit, I just now saw that you guys have been posting here (busy with school and museum stuff). That Yamato fiber looks great! The problem is you can still see the fiber. I think he sliced it at an angle and laied it in the rifle grooves of the barrel. Watching your video, this one popped up too, talk about "wave motion!" I have the fiber and I have a board from something else that I think will work. I thought of gluing the fiber to the other side of the clear barrel piece or drilling holes, the problem is the fiber or holes are always visible. Trying to work that one out before I leap into it. Did you try using those small motors for the doors? You could go direct drive or have some sort of clutch for model safety.- MT Edited March 19, 2017 by MechTech Quote Link to comment Share on other sites More sharing options...
MechTech Posted March 19, 2017 Share Posted March 19, 2017 Oh, make yours R/C like this dude (wish I could read Japanese: - MT Quote Link to comment Share on other sites More sharing options...
arbit Posted March 20, 2017 Share Posted March 20, 2017 9 hours ago, MechTech said: Oh, make yours R/C like this dude I would say it's impossible, but you never know, right? Gotta keep dreaming. 9 hours ago, MechTech said: Did you try using those small motors for the doors? You could go direct drive or have some sort of clutch for model safety.- MT I have no idea how to open the doors. Need to see some simple examples of the types of gears to use. Quote Link to comment Share on other sites More sharing options...
NZEOD Posted March 21, 2017 Author Share Posted March 21, 2017 (edited) Screw drive Edited March 21, 2017 by NZEOD Quote Link to comment Share on other sites More sharing options...
arbit Posted March 21, 2017 Share Posted March 21, 2017 25 minutes ago, NZEOD said: Screw drive Cool! NZEOD to the rescue. I will look into it. Quote Link to comment Share on other sites More sharing options...
arbit Posted March 21, 2017 Share Posted March 21, 2017 8 hours ago, NZEOD said: Screw drive Where did you find that? On Ebay they are all refab 4-wire stepper motors. Can I run a screw drive with a normal 2-wire DC motor? Quote Link to comment Share on other sites More sharing options...
NZEOD Posted March 21, 2017 Author Share Posted March 21, 2017 drive it off one end, use microswitches that get hit by the door as the stoppers/limiters and to close the current gets reversed. should be easy...ish Quote Link to comment Share on other sites More sharing options...
arbit Posted March 23, 2017 Share Posted March 23, 2017 On 3/21/2017 at 10:32 PM, NZEOD said: drive it off one end, use microswitches that get hit by the door as the stoppers/limiters and to close the current gets reversed. should be easy...ish Thanks. I understand limit switches. I understand reversing DC motors. That's fine. But there are 4 wires in a stepper motor (2 pairs). What do you mean by drive it off one end? Do you mean with the stepper motor, or reversing a DC motor? Can I find a screw drive without a stepper motor, or is that the only option? Quote Link to comment Share on other sites More sharing options...
MechTech Posted March 24, 2017 Share Posted March 24, 2017 Go to the hardware store and get some threaded rod with matching nut, then you can use the motor of your choice! NZEOD has a great idea by the way. The Daedalus had several screw drives, they are some of the strongest and easiest to make. You can couple the motor with a u-joint or gears. Part of the Daedalus ramp (similar to doors) was also direct drive from metal geared servos (below). You could easily do that too with a cheap servo.- MT Quote Link to comment Share on other sites More sharing options...
arbit Posted March 24, 2017 Share Posted March 24, 2017 (edited) That's exciting! I will open those doors one way or another! So here's the plan for the hanger: revolving platforms, opening and closing bay doors, leds everywhere, sound effects, and lowering chain. See you in about a year! Edited March 24, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
chyll2 Posted March 24, 2017 Share Posted March 24, 2017 https://m.facebook.com/story.php?story_fbid=1599799146700391&id=100000109647350 Something I saw on FB Quote Link to comment Share on other sites More sharing options...
NZEOD Posted March 24, 2017 Author Share Posted March 24, 2017 13 hours ago, arbit said: That's exciting! I will open those doors one way or another! So here's the plan for the hanger: revolving platforms, opening and closing bay doors, leds everywhere, sound effects, and lowering chain. See you in about a year! Race you... I'm doing the same with the H-Hangar kits and the 1/72 launch arms - have 2 of them. Quote Link to comment Share on other sites More sharing options...
NZEOD Posted March 24, 2017 Author Share Posted March 24, 2017 (edited) 11 hours ago, chyll2 said: https://m.facebook.com/story.php?story_fbid=1599799146700391&id=100000109647350 Something I saw on FB yeah its the way of the future of modelling. Mechatronics The ones FAR too rapid and twitchy in the movements though, needs reduction gearboxes. Edited March 24, 2017 by NZEOD Quote Link to comment Share on other sites More sharing options...
MechTech Posted March 25, 2017 Share Posted March 25, 2017 I've noticed that the metal geared robot style motors are now less than $5.00, so that's cool! They were like $10-15.00 on average. Someone's even got a 6mm diameter with metal gears in it for about $10! You guys could kick butt with all that. - MT Quote Link to comment Share on other sites More sharing options...
arbit Posted March 25, 2017 Share Posted March 25, 2017 5 hours ago, MechTech said: I've noticed that the metal geared robot style motors are now less than $5.00, so that's cool! They were like $10-15.00 on average. Someone's even got a 6mm diameter with metal gears in it for about $10! You guys could kick butt with all that. - MT Links? Quote Link to comment Share on other sites More sharing options...
arbit Posted March 26, 2017 Share Posted March 26, 2017 On 3/25/2017 at 1:25 AM, NZEOD said: Race you... I'm doing the same with the H-Hangar kits and the 1/72 launch arms - have 2 of them. Uhhhh, that's not a fair race. Quote Link to comment Share on other sites More sharing options...
MechTech Posted March 27, 2017 Share Posted March 27, 2017 Just look up "geared motors" on ebay or "brushed motors" at Hobby King. Hobby King has had great service to include a return so I'd trust them. Maybe a cheap servo would be the same and a better way to go? - MT Quote Link to comment Share on other sites More sharing options...
arbit Posted March 27, 2017 Share Posted March 27, 2017 This rack and pinion might open the doors. Quote Link to comment Share on other sites More sharing options...
arbit Posted May 13, 2017 Share Posted May 13, 2017 One thing I haven't figured out yet is how to power multiple leds with one 3v coin cell battery. Most tutorials say it cant be done. But, for example Bandai's Patlabor runs over 6 flashing leds off a coin cell and I've seen kids toys do it. I've tried parallel, I've tried serial, the battery runs out in a matter of seconds. Quote Link to comment Share on other sites More sharing options...
David Hingtgen Posted May 13, 2017 Share Posted May 13, 2017 That sounds more like the LED's burning out in a matter of seconds. There's no way 6 LED's would drain it that fast. Maybe 600... Quote Link to comment Share on other sites More sharing options...
arbit Posted May 13, 2017 Share Posted May 13, 2017 56 minutes ago, David Hingtgen said: That sounds more like the LED's burning out in a matter of seconds. There's no way 6 LED's would drain it that fast. Maybe 600... It's true for same color leds, but not for mixed colors. I made this demo to explain what I am trying to do. Quote Link to comment Share on other sites More sharing options...
MechTech Posted May 13, 2017 Share Posted May 13, 2017 Hey Arbit! Finally on semester break! From experience, not all LEDs are created equally. It looks like some are drawing more amperage than others since they are higher voltage. The dim ones look like they are 4.5v vs 3v. You may need to go with one manufacturer. I've had that same issue with a special flashlight I made with multiple colors on it. - MT Quote Link to comment Share on other sites More sharing options...
arbit Posted May 13, 2017 Share Posted May 13, 2017 (edited) 2 hours ago, MechTech said: Hey Arbit! Finally on semester break! From experience, not all LEDs are created equally. It looks like some are drawing more amperage than others since they are higher voltage. The dim ones look like they are 4.5v vs 3v. You may need to go with one manufacturer. I've had that same issue with a special flashlight I made with multiple colors on it. - MT The goal is to have a lighted robot without an external source. Which led me to an experiment, because resistor calculators don't do it: I put a green, a blue, and a red on a 3v coin cell. I slowly increased the resistors for each by trial and error until I got balanced power with no one led sapping light from the others. In this case I gave 270 and 680 Oms for the green and the red, and 47 Ohms for the blue. This set up has been running steady for a couple hours now. Edited May 13, 2017 by arbit Quote Link to comment Share on other sites More sharing options...
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