These were some 6 mm motors I had lying about. Even with a voltage regulator (I tried 2) I was never able to get them below a usable speed. They're rated at 1.3v but the rpms were in the thousands - zoom zoom
. Its no big deal. Its far more cost effective (about 20.00 total) to simply buy a couple of new ones close to the speed I want. My current post motors are really, really noisy.Daniel
On Mon, Sep 21, 2015 at 8:21 PM, David Schulpius dschulpius@wi.rr.com [B9Builders] wrote:
Daniel, It's certainly easier to buy motors with the right RPM's. However there are two other ways to make the motors run at the speed you want. You can reduce the voltage with a voltage regulator or using PWM as Bob mentioned. A voltage regulator will step down the voltage to a lower voltage and will make the motor spin slower. There are many regulators you can buy that can either step it down to a set level or can be manually adjustable. Eric Johnson sells one that may work but I can't say it will give you the results your looking for because I don't know what your useing: http://www.b9robotbuildersclub.com/pub/parts/B90247/index.html
If you want to use PWM you'll need a motor controller or even a H-bridge. Your EZ Robot's EZB can send the PWM speed command to the controller or H-bridge and set the speed that is perfect for your taste.
Good Luck, Dave Schulpius
On Mon, Sep 21, 2015 at 9:40 PM, Daniel danielscottangel@gmail.com [B9Builders] wrote:
Ok. Looks like the most cost effective solution is to buy new motors at the appropriate RPMs . Around 25.00 total.
Thanks for the input. Always appreciated.
Daniel
Sent from my iPhone
On Sep 21, 2015, at 7:31 PM, Gregorio Padin padingre@yahoo.com [B9Builders] wrote:
Good point. I never though a 555 couls be used but I will look into it. I still have much to do before doing any dry run on motors but will keep it in mind. One the puzzle takes form I will be sharing for comments and improvements.
Sent from Yahoo Mail on Android From:"Bob Darlington rdarlington@gmail.com [B9Builders]"
Date:Mon, Sep 21, 2015 at 10:10 PM
Subject:Re: [B9Builders] Reducing RPMs
Yes, absolutely, but not directly. You'd need to use the Arduino for switching a MOSFET or similar that handles the power to the motor. It's kinda overkill. A 555 timer chip is way cheaper and would effectively be doing the same thing. Sometimes solder is the best software.
-Bob
On Mon, Sep 21, 2015 at 7:44 PM, Gregorio Padin padingre@yahoo.com [B9Builders] wrote:
Not that I am an expert but if you use an Arduino could it be possible to control the rpm?
I plan on getting the brain light to blink using one and when I get there I will see if I can control the motors speed. Again I am not an expert just something to think avout.
Sent from Yahoo Mail on Android From:"Bob Darlington rdarlington@gmail.com [B9Builders]"
Date:Mon, Sep 21, 2015 at 9:39 PM
Subject:Re: [B9Builders] Reducing RPMs
I just bought one of these to test out. The price is right. I'll give an opinion when it arrives in a couple weeks and will maybe even make a video:
http://www.ebay.com/itm/DC-1-8V-to-12V-2A-PWM-Adjustable-Voltage-Regulator-Motor-Speed-Controller/391151074442?rt=nc&_soffid=5009616002&_soffType=OrderSubTotalOffer&_trksid=p5731.m3795
On Mon, Sep 21, 2015 at 7:36 PM, Bob Darlington wrote:
Yes. You can run the motor at full or even higher voltage, but on a lower duty cycle with a PWM controller. Something like this, but probably not this exact one:
http://www.amazon.com/50A-Digital-Motor-Speed-Controller/dp/B004M5NKH4
-Bob
On Mon, Sep 21, 2015 at 7:00 PM, Daniel Angel danielscottangel@gmail.com [B9Builders] wrote:
I suspect I know what the answer will be but what the heck
I have a 6mm micromotor that I need to reduce the RPMs. I know the RPM range and have attempted to reduce that via a voltage controller but have had no luck. Are there any other options to bring this speed down?
Thanks,
Daniel
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Conquering the world one robot at a time....
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Conquering the world one robot at a time....