bill.french's Content
There have been 260 items by bill.french (Search limited from 04-July 24)
#6979 StepGenie (An EE's Best friend?)
Posted by
on 04 January 2011 - 01:13 PM
in
Netduino 2 (and Netduino 1)
#7007 StepGenie (An EE's Best friend?)
Posted by
on 04 January 2011 - 08:57 PM
in
Netduino 2 (and Netduino 1)
#7053 StepGenie (An EE's Best friend?)
Posted by
on 05 January 2011 - 03:56 AM
in
Netduino 2 (and Netduino 1)
Ok... I'm still stuck on the fact that your wife got you a StepGenie for Christmas. That's awesome!!
Did she get you the full demo board or just the chip itself?
LOL... she was very grateful to receive a Google spreadsheet with part numbers from me this year. I was grateful to receive fewer sweaters.
#7000 StepGenie (An EE's Best friend?)
Posted by
on 04 January 2011 - 08:43 PM
in
Netduino 2 (and Netduino 1)
#7454 StepGenie (An EE's Best friend?)
Posted by
on 11 January 2011 - 02:09 PM
in
Netduino 2 (and Netduino 1)
#6992 StepGenie (An EE's Best friend?)
Posted by
on 04 January 2011 - 04:24 PM
in
Netduino 2 (and Netduino 1)
#7509 StepGenie (An EE's Best friend?)
Posted by
on 12 January 2011 - 12:10 PM
in
Netduino 2 (and Netduino 1)
http://www.youtube.com/watch?v=KjkVbNI8YBI
The code looks like this:
public static void Main()
{
OutputPort d0 = new OutputPort(Pins.GPIO_PIN_D0, false);
while (true)
{
d0.Write(true); //send a "step" to the StepGenie -- basically just a pulse
d0.Write(false);
Thread.Sleep(250);
}
}
It's wired up like this:
pins 1,2,12 -> 5v (from netduino)
pins 3,13,14 -> ground (from netduino)
pins 5,6,7,8 -> 220ohm resistor -> led -> ground
pin 11 -> D0 on the netduino
With this setup, you can move pin 12 from 5v to Gnd to switch directions; pins 2,3 can be moved to try different modes. Or, connect them up to digital ios on the netduino and change them through programming.
Hard to follow picture of the circuit: (I ran out of 220 ohm resistors so I used a blue potentiometer on one of the leds...)
#7024 StepGenie (An EE's Best friend?)
Posted by
on 04 January 2011 - 11:44 PM
in
Netduino 2 (and Netduino 1)
#7231 Doing a PIC's Job
Posted by
on 07 January 2011 - 08:22 PM
in
General Discussion
I think you could get away with 3v on the mini, on the 3.3v pin.but I wanted to use a netduino mini since I have a fair understanding of C# and I'm pretty sure that doesn't run on 3V
Also, this site I think has a lot of "in car" stuff, like this:
http://www.mini-box....8&category=1264
...which you might think about using with a small lead-acid battery. Just throwing stuff out there.
Good luck with this!
#8012 Doing a PIC's Job
Posted by
on 20 January 2011 - 07:00 PM
in
General Discussion
other than the thermal pad, you could hand solder this, i think.So, I've been looking over battery charger ICs and I found one that I really like, the trouble is that it's a "thermally-enhanced TSSOP" package which has a pad that needs to get soldered to the circuit board. It also looks very surface-mount and I don't have anything to deal with that. Is there any way to utilize this IC or should I look for something that's easier to use?
Or use this: http://www.proto-adv...ucts_id=2210234
It has videos and everything!
#7243 Doing a PIC's Job
Posted by
on 07 January 2011 - 09:01 PM
in
General Discussion
#7211 Doing a PIC's Job
Posted by
on 07 January 2011 - 02:13 PM
in
General Discussion
#6927 Doing a PIC's Job
Posted by
on 03 January 2011 - 08:25 PM
in
General Discussion
LOL, well, that does make a difference. Even with 10 cells, though, they might peak as high as 1.5v/cell (or more depending on what you're dealing with), so that's still 15v.Sorry, that's a typo, I meant 1-10 cells.
#6910 Doing a PIC's Job
Posted by
on 03 January 2011 - 01:27 PM
in
General Discussion
#5008 Digital spirit-level, which sensor?
Posted by
on 17 November 2010 - 04:22 PM
in
General Discussion
#4580 MFToolkit - new release (VS2010 support / .NET MF 4.1)
Posted by
on 07 November 2010 - 02:08 PM
in
Netduino Plus 2 (and Netduino Plus 1)
#4547 MFToolkit - new release (VS2010 support / .NET MF 4.1)
Posted by
on 07 November 2010 - 12:02 AM
in
Netduino Plus 2 (and Netduino Plus 1)
#5796 Anyone have a clever hex->byte conversion routine?
Posted by
on 06 December 2010 - 02:58 AM
in
Netduino 2 (and Netduino 1)
#5956 Anyone have a clever hex->byte conversion routine?
Posted by
on 10 December 2010 - 02:02 AM
in
Netduino 2 (and Netduino 1)
#5970 Anyone have a clever hex->byte conversion routine?
Posted by
on 10 December 2010 - 01:07 PM
in
Netduino 2 (and Netduino 1)
#5960 Anyone have a clever hex->byte conversion routine?
Posted by
on 10 December 2010 - 03:01 AM
in
Netduino 2 (and Netduino 1)
public static byte[] GetByteArray(string s)
{
return System.Text.Encoding.UTF8.GetBytes(s);
}
public static byte GetByteFromHex(string s)
{
return GetByteFromHex(GetByteArray(s));
}
public static byte GetByteFromHex(byte[] ba)
{
return (byte)((((ba[0] > 96) ? ba[0] - 87 : ba[0] - 48) * 16) + ((ba[1] > 96) ? ba[1] - 87 : ba[1] - 48));
}
#4565 2D Motion Capture, early results
Posted by
on 07 November 2010 - 05:37 AM
in
Project Showcase
Thinking about it (the project) some more, the datasheet says 5us is "typical"... (and since you say you got the pwm call wrong anyway) which makes me wonder if you could have gotten away with something like:
out1.Write(true);
out1.Write(false);
which, according to here, gets you a 60us pulse.
... I also wonder if you had gpio pins to spare, you could you one pin in output mode to fire the pulse, then another pin in input mode (both tied to the sig pin on the ping thing) to read the returning pulse, then you wouldn't have to worry about .Dispose()'s timing.
#4562 2D Motion Capture, early results
Posted by
on 07 November 2010 - 04:52 AM
in
Project Showcase
#5875 Stepper Motor Control?
Posted by
on 07 December 2010 - 07:57 PM
in
Netduino 2 (and Netduino 1)
#5867 Stepper Motor Control?
Posted by
on 07 December 2010 - 06:04 PM
in
Netduino 2 (and Netduino 1)
