Construction Ideas : 204


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Special:	[DAT] (requires LDraw-compatible viewer)
Subject:	Straight moving with only one rotation sensor
Newsgroups:	lugnet.cad.dat.ideas
Date:	Thu, 10 Jun 2004 00:10:59 GMT
Viewed:	5224 times

Hi I saw in the LEGO Mindstorms Web Page that many people made their robots with 2 motors go straight using one rotation sensor on each wheel and stopping the correct motor until both sensors were equal. I got Ultimate Accessory Set as a present some months ago and I wanted to make robots go straight using only one rotation sensor. I made it using a differential. Here is the LDraw file: 0 Untitled Robot 0 Name: myrobot.ldr 0 Author: Nicolas Alvarez (nicoalvar0@hotmail.com) 0 Unofficial Model 0 Note: 0 This is just to show the model, it isn't designed 0 to make building instructions (yet). 0 ROTATION CENTER 0 0 0 1 "Custom" 0 ROTATION CONFIG 0 0 1 16 0 -96 0 1 0 0 0 1 0 0 0 1 884.DAT 1 7 0 0 100 1 0 0 0 1 0 0 0 1 3738.DAT 1 7 0 -8 220 0 0 1 0 1 0 -1 0 0 3033.DAT 1 7 70 -8 220 0 0 1 0 1 0 -1 0 0 4477.DAT 1 7 -70 -8 220 0 0 1 0 1 0 -1 0 0 4477.DAT 1 7 0 0 140 1 0 0 0 1 0 0 0 1 3738.DAT 1 7 -70 0 200 0 0 1 0 1 0 -1 0 0 3710.DAT 1 7 70 0 200 0 0 1 0 1 0 -1 0 0 3710.DAT 1 7 60 0 40 0 0 1 0 1 0 -1 0 0 3709B.DAT 1 7 -60 0 40 0 0 1 0 1 0 -1 0 0 3709B.DAT 1 0 60 -32 160 0 0 1 0 1 0 -1 0 0 3001.DAT 1 0 60 -56 160 0 0 1 0 1 0 -1 0 0 3001.DAT 1 0 -60 -32 160 0 0 1 0 1 0 -1 0 0 3001.DAT 1 0 -60 -56 160 0 0 1 0 1 0 -1 0 0 3001.DAT 1 0 70 -80 160 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 50 -80 160 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 -50 -80 160 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 -70 -80 160 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 80 -70 180 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 80 -70 140 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 -80 -70 180 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 -80 -70 140 1 0 0 0 1 0 0 0 1 2780.DAT 1 8 80 -70 40 -1 0 0 0 1 0 0 0 -1 32002.DAT 1 8 80 -70 -60 -1 0 0 0 1 0 0 0 -1 32002.DAT 1 8 -80 -70 40 1 0 0 0 1 0 0 0 1 32002.DAT 1 8 -80 -70 -60 1 0 0 0 1 0 0 0 1 32002.DAT 1 0 90 -70 -20 0 -1 0 1 0 0 0 0 1 32278.DAT 1 0 -90 -70 -20 0 -1 0 1 0 0 0 0 1 32278.DAT 1 0 70 8 120 0 0 1 0 1 0 -1 0 0 3895.DAT 1 0 -70 8 120 0 0 1 0 1 0 -1 0 0 3895.DAT 1 0 70 32 160 0 0 1 0 1 0 -1 0 0 3702.DAT 1 0 -70 32 160 0 0 1 0 1 0 -1 0 0 3702.DAT 1 7 0 0 -10 1 0 0 0 1 0 0 0 1 3460.DAT 1 0 0 8 -10 1 0 0 0 1 0 0 0 1 3702.DAT 1 7 70 32 70 1 0 0 0 1 0 0 0 1 3024.DAT 1 7 -70 32 70 1 0 0 0 1 0 0 0 1 3024.DAT 1 7 70 32 20 0 0 1 0 1 0 -1 0 0 3710.DAT 1 7 -70 32 20 0 0 1 0 1 0 -1 0 0 3710.DAT 1 7 -40 0 280 1 0 0 0 1 0 0 0 1 71427C01.DAT 1 7 40 0 280 1 0 0 0 1 0 0 0 1 71427C01.DAT 1 7 70 8 260 0 0 1 0 1 0 -1 0 0 3023.DAT 1 7 -70 8 260 0 0 1 0 1 0 -1 0 0 3023.DAT 1 7 0 0 260 1 0 0 0 1 0 0 0 1 3022.DAT 1 7 0 8 260 1 0 0 0 1 0 0 0 1 3022.DAT 1 0 0 8 200 0 0 1 0 1 0 -1 0 0 3001.DAT 1 0 -10 32 200 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 10 32 200 0 0 1 0 1 0 -1 0 0 3701.DAT 1 0 40 0 260 1 0 0 0 1 0 0 0 1 5306.DAT 1 0 -40 0 260 -1 0 0 0 1 0 0 0 -1 5306.DAT 1 0 40 -104 40 -1 0 0 0 1 0 0 0 -1 5306.DAT 1 0 -40 -104 40 -1 0 0 0 1 0 0 0 -1 5306.DAT 1 7 0 72 260 1 0 0 0 1 0 0 0 1 3738.DAT 1 7 70 72 300 0 0 1 0 1 0 -1 0 0 3023.DAT 1 7 -70 72 300 0 0 1 0 1 0 -1 0 0 3023.DAT 1 7 0 72 300 1 0 0 0 1 0 0 0 1 3022.DAT 1 7 40 42 230 1 0 0 0 1 0 0 0 1 3647.DAT 1 7 -40 42 230 1 0 0 0 1 0 0 0 1 3647.DAT 1 7 0 2 200 0 0 1 0 1 0 -1 0 0 3709B.DAT 1 0 60 42 200 1 0 0 0 1 0 0 0 1 3706.DAT 1 7 50 42 200 0 0 -1 0 1 0 1 0 0 3650A.DAT 1 7 30 42 200 0 0 1 0 1 0 -1 0 0 3713.DAT 1 7 90 42 200 0 0 -1 0 1 0 1 0 0 3713.DAT 1 7 60 42 160 -1 0 0 0 1 0 0 0 -1 3749.DAT 1 7 50 42 160 0 0 1 0 1 0 -1 0 0 3647.DAT 1 7 60 42 140 -1 0 0 0 1 0 0 0 -1 3749.DAT 1 7 50 42 140 0 0 1 0 1 0 -1 0 0 3647.DAT 1 0 -60 42 200 1 0 0 0 1 0 0 0 1 3706.DAT 1 7 -51 42 200 0 0 1 0 1 0 -1 0 0 3650A.DAT 1 7 -31 42 200 0 0 -1 0 1 0 1 0 0 3713.DAT 1 7 -90 42 200 0 0 1 0 1 0 -1 0 0 3713.DAT 1 0 -70 42 160 1 0 0 0 1 0 0 0 1 4519.DAT 1 7 -50 42 160 0 0 1 0 1 0 -1 0 0 3647.DAT 1 7 -90 42 160 0 0 1 0 1 0 -1 0 0 4019.DAT 1 0 -51 42 120 1 0 0 0 1 0 0 0 1 32073.DAT 1 7 -90 42 120 0 0 1 0 1 0 -1 0 0 4019.DAT 1 7 -50 42 120 0 0 -1 0 1 0 1 0 0 3713.DAT 1 0 41 42 120 1 0 0 0 1 0 0 0 1 3705.DAT 1 7 50 42 120 0 0 -1 0 1 0 1 0 0 3647.DAT 1 7 0 42 140 -1 0 0 0 1 0 0 0 -1 6589.DAT 1 7 20 42 120 0 0 -1 0 1 0 1 0 0 6589.DAT 1 7 -20 42 120 0 0 1 0 1 0 -1 0 0 6589.DAT 1 8 0 42 120 0 0 1 1 0 0 0 1 0 6573.DAT 1 14 0 2 40 0 0 1 0 1 0 -1 0 0 3020.DAT 1 14 0 10 40 0 0 1 0 1 0 -1 0 0 3020.DAT 1 1 0 18 40 0 0 -1 0 1 0 1 0 0 2977C01.DAT 1 8 10 34 60 -1 0 0 0 1 0 0 0 -1 6587.DAT 1 7 30 34 60 0 0 1 0 1 0 -1 0 0 3648.DAT 1 7 60 -47.958 -182.814 0 0 -1 1 0 0 0 -1 0 32001.DAT 1 7 -60 -50 -183 0 0 -1 1 0 0 0 -1 0 32001.DAT 1 7 -1 -70 -175 -1 0 0 0 0 -1 0 -1 0 3738.DAT 1 7 60 -97.958 -174.814 -1 0 0 0 0 -1 0 -1 0 3023.DAT 1 7 60 -37.958 -174.814 -1 0 0 0 0 -1 0 -1 0 3023.DAT 1 7 -60 -97.958 -174.814 -1 0 0 0 0 -1 0 -1 0 3023.DAT 1 7 -60 -37.958 -174.814 -1 0 0 0 0 -1 0 -1 0 3023.DAT 1 0 -70 -69.958 -150.772 0 0 -1 1 0 0 0 -1 0 3701.DAT 1 0 70 -69.958 -150.772 0 0 -1 1 0 0 0 -1 0 3701.DAT 1 0 60 -17.958 -190.814 -1 0 0 0 0 -1 0 -1 0 3004.DAT 1 0 60 2.042 -190.814 -1 0 0 0 0 -1 0 -1 0 3700.DAT 1 7 60 -7.958 -214.814 -1 0 0 0 0 -1 0 -1 0 3022.DAT 1 0 -60 -17.958 -190.814 -1 0 0 0 0 -1 0 -1 0 3004.DAT 1 0 -60 2.042 -190.814 -1 0 0 0 0 -1 0 -1 0 3700.DAT 1 7 -60 -7.958 -214.814 -1 0 0 0 0 -1 0 -1 0 3022.DAT 1 7 -60 10.465 -197.278 0 0 -1 1 0 0 0 -1 0 3749.DAT 1 7 -60 40.465 -197.278 1 0 0 0 0 1 0 -1 0 32015.DAT 1 0 -60 51.263 -168.859 0 0 -1 0.379993 0.924988 0 0.924988 -0.379993 0 32062.DAT 1 1 -60 62.463 -144.019 1 0 0 0 0.924988 0.379993 0 -0.379993 0.924988 32013.DAT 1 7 -70 65.664 -144.409 -1 0 0 0 0.924988 -0.379993 0 -0.379993 -0.924988 3749.DAT 1 14 -80 62.463 -144.019 0 0 -1 0.379993 0.924988 0 0.924988 -0.379993 0 3482.DAT 1 0 -80 65.664 -144.409 0 0 1 -0.379993 0.924988 0 -0.924988 -0.379993 0 2346.DAT 1 7 59.999 10.465 -197.274 0 0 -1 1 0 0 0 -1 0 3749.DAT 1 7 59.999 40.465 -197.274 1 0 0 0 0 1 0 -1 0 32015.DAT 1 0 60 51.263 -168.855 0 0 -1 0.379993 0.924988 0 0.924988 -0.379993 0 32062.DAT 1 1 60 62.463 -144.015 1 0 0 0 0.924988 0.379993 0 -0.379993 0.924988 32013.DAT 1 7 70 62.823 -144.407 1 0 0 0 -0.922761 -0.385369 0 0.385369 -0.922761 3749.DAT 1 14 80 63.374 -144.343 0 0 1 0.385369 -0.922761 0 0.922761 0.385369 0 3482.DAT 1 0 80 62.823 -144.407 0 0 -1 -0.385369 -0.922761 0 -0.922761 0.385369 0 2346.DAT 1 0 80 -70.177 -160 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 80 -90.177 -160 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 90 -88 -120 0 -1 0 1 0 0 0 0 1 32316.DAT 1 0 -80 -70 -160 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 -80 -90 -160 1 0 0 0 1 0 0 0 1 2780.DAT 1 0 -90 -90 -120 0 -1 0 1 0 0 0 0 1 32316.DAT 1 14 100 -79 -110 0 1 0 0 0 1 1 0 0 3020.DAT 1 14 -98 -79 -110 0 -1 0 0 0 -1 1 0 0 3020.DAT 1 14 110 42 200 0 0 -1 0 1 0 1 0 0 3482.DAT 1 0 110 42 200 0 0 -1 0 1 0 1 0 0 3634.DAT 1 14 -110 42 200 0 0 1 0 1 0 -1 0 0 3482.DAT 1 0 -110 42 200 0 0 1 0 1 0 -1 0 0 3634.DAT 0 LMKWYT -- - Nicolas Alvarez nicoalvar0.no.spam@hotmail.com

Message has 2 Replies:

		Re: Straight moving with only one rotation sensor
Hello y'all- Does anyone out there know where I can get discontinued lego sets (mainly the autochassis set 8860&65) at reasonable rates here in Ontario? Thanks. (20 years ago, 10-Jun-04, to lugnet.cad.dat.ideas)

		Re: Straight moving with only one rotation sensor [DAT]
I' built a similar bot, but the wheels are free-turning. Additionaly, the wheels are pressed down, so that they always have contact to the floor. It's a soccer bot for the RoboCup Junior event. 0 Untitled 0 ROTATION CENTER 0 0 0 1 "Custom" 0 (...) (20 years ago, 13-Jun-04, to lugnet.cad.dat.ideas)

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