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31
Mechanics and Construction / Re: have you used Nachi 8600-A
« Last post by yssa22 on April 07, 2015, 06:44:28 PM »
Thank you so much for such response, I really appreciate it a lot.  ;) ;)

I am not really familiar with it, but the battery used to be separated from the board when I started troubleshooting it. It had been removed already from the previous operator and I am so lost of the idea because the previous operator wouldn't help me.. Thus, if the battery is the only problem then we had already replaced it just the same battery it was before.

Thanks a lot!!

32
Misc / Re: Analyzing the Axon series: Coding, Contruction, and Contraptions
« Last post by mklrobo on April 07, 2015, 05:22:40 AM »
Axon series - Component coding and construction.
Recently talked to a friend, and his Clothes Washer had stopped working.
The control to the Washing Machine had gone out, and the cost of it is
about $300 - $400 dollars. I am wondering if the Axon II or Axon could be
used to replace the control
. It would be a whole lot less expensive, and
work forever, notwithstanding the replacements of the motor and sensors.
Relays would power the motors/devices, while the selections would be inputs
to the Axon. What do you think?
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Misc / Re: Analyzing the Axon series: Coding, Contruction, and Contraptions
« Last post by mklrobo on April 07, 2015, 05:16:12 AM »
 Axon II & Axon Mote - Building your own droid Army(flying, walking, Etc,.) I was watching the new science fiction movie, Interstellar; but also
remembering the movie, Silent Running, with Huey, Duey, and Louey. (Robots) One possible purpose for the droid army, is to maintain a garden. I was thinking about the Army maintaining a garden in my back yard, and maintaining an aquaponics system that I would have. The Axon could be used to navigate/control a farms combines, or tractors.
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Misc / Re: Analyzing the Axon series: Coding, Contruction, and Contraptions
« Last post by mklrobo on April 07, 2015, 05:03:10 AM »
Axon series: What is this thing?
Using the Webbot PDF instructions, Project Designer, and the Datasheet of
the Axon II, I have tried to patch together what exactly
the program is doing, when it creates the source program.
When running the Project Designer, the variables in the spreadsheet
on the left, seem to be the options available to program that
particular pin. When you program in the software, the options that
you selected are updated to the control register for that pin.(?) ???
The question is, can the header files for the Webbot software be used for
the AVR Studio? I could not find the header files for AVR Studio, so
where are the header files that are needed, or do I transfer the
Webbot headers to the needed files for AVR Studio?
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Mechanics and Construction / Re: have you used Nachi 8600-A
« Last post by mklrobo on April 07, 2015, 04:51:27 AM »
 ;D Hello!
Billy has a good point. The memory battery is on your board, and
may even look like a capacitor. Sometimes the battery may leak,
in which you may find a greenish-brown residue on the battery.
Keep me posted...   ;D
36
Mechanics and Construction / Re: have you used Nachi 8600-A
« Last post by Billy on April 07, 2015, 12:29:42 AM »
If I had to guess (which I do), I'd guess the battery that is used to maintain configuration data died.
At my previous company, the robot batteries would die and lobotomize the controller.

Replacing battery, then re-installing the configuration would be required. However, I never had to do that part so do not know what was required with our robots, much less yours.

Before you start pulling things apart, see if you can find a battery and check voltage on it. In our robots, the batteries were big enough that you might think there several C size batteries in them. They were not the size of a coin.
37
Electronics / Re: Electric bicycle
« Last post by Schlayer on April 06, 2015, 04:44:22 PM »
Well... The max stall current should definitely be less than 220 Amps, yes. I highly doubt the continuous drain would be over 110A also, but those number seems extremely high for a MOSFET at that price. If its true to its datasheet, that should indeed work. I don;t know a ton about transistors, but if I were you I'd make sure you have a fuse between the positive lead of your battery and whatever circuitry you have in that pot/controller circuit. You'll want one that will trigger at 200A like this: http://www.ebay.com/itm/Gold-ANL-Fuse-Holder-1-Foot-2-Gauge-Wire-200A-Fuse-/390461024295?pt=LH_DefaultDomain_0&hash=item5ae94a6827&vxp=mtr
My concerns about the MOSFET are mainly due to its size. You see that fuse has 2 gauge wire on it. 2! That's gigantic. Considerably smaller would melt under the heat of 100-200A of current. I'm really unsure how a MOSFET with such tiny pins could handle 110A continuous, but you are right that in all likelihood the motor draws well under that. I guess you may as well go for it and test it, but make sure you trigger it from a distance in case the MOSFET explodes!  I'll talk to a friend who is more familiar with MOSFETs and get back to you.
38
Electronics / Re: Electric bicycle
« Last post by newbie_teach on April 06, 2015, 03:47:23 PM »
Frankly I never debate/argue with pro engineers/makers who have a ton of knowledge than me. But let me take a chance and clear this concept in my mind. I "need" to know the stall current you said,can't we make assumptions? How much can be the max stall current? Not more than 220A right? Just use a MOSFET IRF3205 has a drain current of 110A continuous and 220A burst VDS of 55v. Isn't that enough? By your potentiometer/rheostat method do u mean to power it up directly? No way that will be done. Your correct.
Basically a small potentiometer will be wired up with an arduino and just like the fade sketch where pot controls the LED's brightness instead of led there will be that motor driver circuit (no h bridge since only one direction is required).
Please correct me where I am wrong. I like being corrected.
Thank you for bearing and helping me :)
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Misc / National Robotics Week at ServoCity!
« Last post by ServoCity on April 06, 2015, 12:55:57 PM »


We are excited about National Robotics Week and you should be too! There are all kinds of cool events happening across the states April 4th - 12th; be sure to check out the NRW site for events near you. Here at ServoCity, we’ll be celebrating all week with a variety of fun promotions, sales, tech tips, new product launches and more! So you don’t miss out on any of the week’s activities, we’ve provided the calendar of events below. We look forward to celebrating all things robotics with you! Be sure to like us on Facebook, follow us on Twitter, and subscribe to our e-mails!

To see a full calendar of events please visit https://www.servocity.com/html/national_robotics_week_2015.html!
40
Electronics / Re: Counting the pins
« Last post by Schlayer on April 06, 2015, 11:06:10 AM »
To figure out how to translate that display to an Arduino you'd need detailed spec sheets for that part saying what signals go to which pins, and match those to their analogs on the Arduino LCD display. I'm inclined to say it's possible, in theory, but in practice I have no idea how you might go about it... Sorry.
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