Brian, Mkaes perfect sense in steady state but could there be transient differences between the board's Vcc rail and the internal voltage inside the Arduino? Is this something I need to worry about?<div><br></div><div>Chip<br><br>On Wednesday, December 2, 2015, <<a href="mailto:triembed-request@triembed.org">triembed-request@triembed.org</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send TriEmbed mailing list submissions to<br>
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or, via email, send a message with subject or body 'help' to<br>
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When replying, please edit your Subject line so it is more specific<br>
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<br>
Today's Topics:<br>
<br>
1. Re: TriEmbed Digest, Vol 31, Issue 2 (Brian)<br>
2. Re: TriEmbed Digest, Vol 31, Issue 2 (Chip McClelland)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 2 Dec 2015 11:25:11 -0500<br>
From: Brian <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@undecidedgames.net')">triembed@undecidedgames.net</a>><br>
To: <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a><br>
Subject: Re: [TriEmbed] TriEmbed Digest, Vol 31, Issue 2<br>
Message-ID: <<a href="javascript:;" onclick="_e(event, 'cvml', '565F1B67.7070401@undecidedgames.net')">565F1B67.7070401@undecidedgames.net</a>><br>
Content-Type: text/plain; charset=windows-1252; format=flowed<br>
<br>
On 12/2/2015 11:01 AM, Chip McClelland via TriEmbed wrote:<br>
> Brian and Shane,<br>
><br>
> Thank you for your responses. Originally, I rejected the diode solution<br>
> for two reasons:<br>
><br>
> 1) I thought the Arduino pin would end up connected to the Board's Vcc<br>
> rail exceeding the 40mA capacity but, as you pointed out, the voltage<br>
> drop across the diode will prevent this.<br>
><br>
<br>
If the arduino is powered from that same Vcc rail, the silicon in the<br>
arduino itself will prevent the pin from being overloaded; internal<br>
junctions will be reverse-biased whether or not an external diode is<br>
connected. If that weren't true, the arduino would be somehow powering<br>
itself! You could then become a very rich man!<br>
<br>
-B<br>
<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Wed, 2 Dec 2015 21:58:07 +0530<br>
From: Chip McClelland <<a href="javascript:;" onclick="_e(event, 'cvml', 'chip@mcclellands.org')">chip@mcclellands.org</a>><br>
To: Shane Trent <<a href="javascript:;" onclick="_e(event, 'cvml', 'shanedtrent@gmail.com')">shanedtrent@gmail.com</a>><br>
Cc: "<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>" <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>><br>
Subject: Re: [TriEmbed] TriEmbed Digest, Vol 31, Issue 2<br>
Message-ID:<br>
<<a href="javascript:;" onclick="_e(event, 'cvml', 'CABQO2+mvBbYR5AQYMpy2ZqPAwHTHFrNLHftGFALWV4_Fnj-6sA@mail.gmail.com')">CABQO2+mvBbYR5AQYMpy2ZqPAwHTHFrNLHftGFALWV4_Fnj-6sA@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Shane,<br>
<br>
But then the Arduino pin is driven High can directly connected to Vcc, how<br>
can I make sure it does not try to power the whole board even if briefly<br>
due to temporary voltage drops?<br>
<br>
Chip<br>
<br>
On Wednesday, December 2, 2015, Shane Trent <<a href="javascript:;" onclick="_e(event, 'cvml', 'shanedtrent@gmail.com')">shanedtrent@gmail.com</a>> wrote:<br>
<br>
> Chip,<br>
><br>
> About your point 2).<br>
><br>
> The Bluetooth dongle would not see the diode drop, the dongle will see as<br>
> close to Vcc as the Arduino I/O pin can drive it. The diode drop only shows<br>
> up in your Vcc when you are powering the board from the FTDI cable through<br>
> the diode. With the Bluetooth dongle connected, it will be like the diode<br>
> is not there at all, unless something really strange happens.<br>
><br>
> Shane<br>
><br>
> On Wed, Dec 2, 2015 at 11:01 AM, Chip McClelland via TriEmbed <<br>
> <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a><br>
> <javascript:_e(%7B%7D,'cvml','<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>');>> wrote:<br>
><br>
>> Brian and Shane,<br>
>><br>
>> Thank you for your responses. Originally, I rejected the diode solution<br>
>> for two reasons:<br>
>><br>
>> 1) I thought the Arduino pin would end up connected to the Board's Vcc<br>
>> rail exceeding the 40mA capacity but, as you pointed out, the voltage drop<br>
>> across the diode will prevent this.<br>
>><br>
>> 2) I worried the voltage drop across the diode would not provide the<br>
>> Bluetooth dongle the voltage it needed. However, it sounds like I might be<br>
>> able to find one with a small enough drop to fix this.<br>
>><br>
>> I will give this a try and thank you for your advice.<br>
>><br>
>> Chip<br>
>><br>
>> On Wednesday, December 2, 2015, <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed-request@triembed.org')">triembed-request@triembed.org</a><br>
>> <javascript:_e(%7B%7D,'cvml','<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed-request@triembed.org')">triembed-request@triembed.org</a>');>> wrote:<br>
>><br>
>>> Send TriEmbed mailing list submissions to<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a><br>
>>><br>
>>> To subscribe or unsubscribe via the World Wide Web, visit<br>
>>> <a href="http://mail.triembed.org/mailman/listinfo/triembed_triembed.org" target="_blank">http://mail.triembed.org/mailman/listinfo/triembed_triembed.org</a><br>
>>> or, via email, send a message with subject or body 'help' to<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed-request@triembed.org')">triembed-request@triembed.org</a><br>
>>><br>
>>> You can reach the person managing the list at<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed-owner@triembed.org')">triembed-owner@triembed.org</a><br>
>>><br>
>>> When replying, please edit your Subject line so it is more specific<br>
>>> than "Re: Contents of TriEmbed digest..."<br>
>>><br>
>>><br>
>>> Today's Topics:<br>
>>><br>
>>> 1. IEEE Internet of Things meeting tonight (Wednesday)<br>
>>> (Rodney Radford)<br>
>>> 2. Is there a FET trick for this? (Chip McClelland)<br>
>>> 3. Laser cutter/engraver (Craig Cook)<br>
>>> 4. Re: Is there a FET trick for this? (Brian)<br>
>>> 5. Re: Is there a FET trick for this? (Shane Trent)<br>
>>><br>
>>><br>
>>> ----------------------------------------------------------------------<br>
>>><br>
>>> Message: 1<br>
>>> Date: Wed, 2 Dec 2015 05:42:49 -0500<br>
>>> From: Rodney Radford <<a href="javascript:;" onclick="_e(event, 'cvml', 'ncgadgetry@gmail.com')">ncgadgetry@gmail.com</a>><br>
>>> To: trianglerobotics <<a href="javascript:;" onclick="_e(event, 'cvml', 'trianglerobotics@yahoogroups.com')">trianglerobotics@yahoogroups.com</a>>, TriEmbed<br>
>>> Discussion <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>>, Triangle Linux Users Group<br>
>>> General Discussion <<a href="javascript:;" onclick="_e(event, 'cvml', 'trilug@trilug.org')">trilug@trilug.org</a>><br>
>>> Subject: [TriEmbed] IEEE Internet of Things meeting tonight<br>
>>> (Wednesday)<br>
>>> Message-ID:<br>
>>> <<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'CA+kfaxFKNQLqdvYnsNqmAvbic0U7FA+yg9ffQkgOtH4ffxy5UQ@mail.gmail.com')">CA+kfaxFKNQLqdvYnsNqmAvbic0U7FA+yg9ffQkgOtH4ffxy5UQ@mail.gmail.com</a>><br>
>>> Content-Type: text/plain; charset="utf-8"<br>
>>><br>
>>> Don't forget tonight to attend tonight's innagural meeting of the new<br>
>>> IEEE<br>
>>> Internet of Things IoT group on NCSU Centennial campus.<br>
>>><br>
>>> The meeting begins at 6:30pm with food and drink:<br>
>>><br>
>>> <a href="https://meetings.vtools.ieee.org/m/36760" target="_blank">https://meetings.vtools.ieee.org/m/36760</a><br>
>>> -------------- next part --------------<br>
>>> An HTML attachment was scrubbed...<br>
>>> URL: <<br>
>>> <a href="http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/f51de483/attachment-0001.html" target="_blank">http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/f51de483/attachment-0001.html</a><br>
>>> ><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> Message: 2<br>
>>> Date: Wed, 2 Dec 2015 18:31:29 +0530<br>
>>> From: Chip McClelland <<a href="javascript:;" onclick="_e(event, 'cvml', 'chip@mcclellands.org')">chip@mcclellands.org</a>><br>
>>> To: "<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>" <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>><br>
>>> Subject: [TriEmbed] Is there a FET trick for this?<br>
>>> Message-ID:<br>
>>> <CABQO2+nHLX8x1_q9hQCL73L0bjsBW7jSm=<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'cccrrTiZS3HZFSXg@mail.gmail.com')">cccrrTiZS3HZFSXg@mail.gmail.com</a>><br>
>>> Content-Type: text/plain; charset="utf-8"<br>
>>><br>
>>> All,<br>
>>> Down to the final stretch on my new board - just need one more piece of<br>
>>> advice.<br>
>>><br>
>>> I am trying to see if there is a way to accomplish something without<br>
>>> resorting to a physical jumper. I would like to use the FTDI header on my<br>
>>> new board in two ways with respect to the power pin.<br>
>>><br>
>>> 1) when I connect a FTDI connector, it could power the board. The power<br>
>>> pin<br>
>>> is connected directly to the board's power rail. This is how it is today.<br>
>>><br>
>>> 2) when I connect the Adafruit UART friend, I can turn it on and off<br>
>>> using<br>
>>> one of the Arduino's digital pins. In this scenario, I only want the<br>
>>> power<br>
>>> pin connected to the digital pin on the Arduino.<br>
>>><br>
>>> Is there some way to automatically switch between these two modes based<br>
>>> on<br>
>>> whether there is power supplied by the FTDI adapter?<br>
>>><br>
>>> Thanks,<br>
>>><br>
>>> Chip<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>> --<br>
>>> Sent from my iPhone - please excuse the typos<br>
>>> -------------- next part --------------<br>
>>> An HTML attachment was scrubbed...<br>
>>> URL: <<br>
>>> <a href="http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/eec3b42a/attachment-0001.html" target="_blank">http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/eec3b42a/attachment-0001.html</a><br>
>>> ><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> Message: 3<br>
>>> Date: Wed, 2 Dec 2015 13:53:15 +0000 (UTC)<br>
>>> From: Craig Cook <<a href="javascript:;" onclick="_e(event, 'cvml', 'cncook001@yahoo.com')">cncook001@yahoo.com</a>><br>
>>> To: "<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>" <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>><br>
>>> Subject: [TriEmbed] Laser cutter/engraver<br>
>>> Message-ID:<br>
>>> <<a href="javascript:;" onclick="_e(event, 'cvml', '364134559.2216081.1449064395581.JavaMail.yahoo@mail.yahoo.com')">364134559.2216081.1449064395581.JavaMail.yahoo@mail.yahoo.com</a>><br>
>>> Content-Type: text/plain; charset="utf-8"<br>
>>><br>
>>> Just heard about this on the Embedded.fm podcast.<br>
>>> <a href="https://glowforge.com/" target="_blank">https://glowforge.com/</a><br>
>>> Looks like a great christmas present ;)<br>
>>> Craig<br>
>>> -------------- next part --------------<br>
>>> An HTML attachment was scrubbed...<br>
>>> URL: <<br>
>>> <a href="http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/4c68059c/attachment-0001.html" target="_blank">http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20151202/4c68059c/attachment-0001.html</a><br>
>>> ><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> Message: 4<br>
>>> Date: Wed, 2 Dec 2015 10:15:53 -0500<br>
>>> From: Brian <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@undecidedgames.net')">triembed@undecidedgames.net</a>><br>
>>> To: <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a><br>
>>> Subject: Re: [TriEmbed] Is there a FET trick for this?<br>
>>> Message-ID: <<a href="javascript:;" onclick="_e(event, 'cvml', '565F0B29.7020501@undecidedgames.net')">565F0B29.7020501@undecidedgames.net</a>><br>
>>> Content-Type: text/plain; charset=windows-1252; format=flowed<br>
>>><br>
>>> Let me see if I understand correctly:<br>
>>><br>
>>> When the FTDI is connected, you want power to flow FROM the FTDI adapter<br>
>>> TO your board.<br>
>>><br>
>>> When the Adafruit doohickey is connected, you want power to flow FROM<br>
>>> your board TO the adapter (the opposite direction) by the same pin.<br>
>>><br>
>>> If that's it, a simple diode between the pin and your board's power rail<br>
>>> is all you need. Oriented to allow current to flow from the connector<br>
>>> to the power rail and not the other way. Connect both the connector pin<br>
>>> and the Arduino pin to the anode of the diode, and connect the power<br>
>>> rail to the diode's cathode. If the connected board is supplying power,<br>
>>> the diode will be forward-biased and will conduct. If the board is<br>
>>> receiving power, the diode will be reverse-biased and will not conduct.<br>
>>><br>
>>> Make sure the diode is rated for the amount of current that will flow in<br>
>>> from the FTDI adapter.<br>
>>><br>
>>> Crude attempt at ascii art:<br>
>>><br>
>>> [FTDI?] ----+---[>|---- +V rail<br>
>>> |<br>
>>> -<br>
>>> ^ [optional]<br>
>>> |<br>
>>> arduino pin<br>
>>><br>
>>> [FTDI?] represents the connector pin.<br>
>>><br>
>>> The optional diode is if you want to prevent current flowing into the<br>
>>> arduino pin from the FTDI adapter, but is unnecessary unless the FTDI<br>
>>> adapter supply voltage is too high for the pin.<br>
>>><br>
>>> Ordinary diodes do impose a nominally 0.7V voltage drop when in<br>
>>> conduction, but you can shop for a Schottky diode with a lower voltage<br>
>>> drop if that will be a problem.<br>
>>><br>
>>> Hope this helps!<br>
>>> -B<br>
>>><br>
>>><br>
>>><br>
>>> On 12/2/2015 8:01 AM, Chip McClelland via TriEmbed wrote:<br>
>>> > All,<br>
>>> > Down to the final stretch on my new board - just need one more piece of<br>
>>> > advice.<br>
>>> ><br>
>>> > I am trying to see if there is a way to accomplish something without<br>
>>> > resorting to a physical jumper. I would like to use the FTDI header on<br>
>>> > my new board in two ways with respect to the power pin.<br>
>>> ><br>
>>> > 1) when I connect a FTDI connector, it could power the board. The power<br>
>>> > pin is connected directly to the board's power rail. This is how it is<br>
>>> > today.<br>
>>> ><br>
>>> > 2) when I connect the Adafruit UART friend, I can turn it on and off<br>
>>> > using one of the Arduino's digital pins. In this scenario, I only want<br>
>>> > the power pin connected to the digital pin on the Arduino.<br>
>>> ><br>
>>> > Is there some way to automatically switch between these two modes based<br>
>>> > on whether there is power supplied by the FTDI adapter?<br>
>>> ><br>
>>> > Thanks,<br>
>>> ><br>
>>> > Chip<br>
>>> ><br>
>>> ><br>
>>> ><br>
>>> ><br>
>>> > --<br>
>>> > Sent from my iPhone - please excuse the typos<br>
>>> ><br>
>>> ><br>
>>> > _______________________________________________<br>
>>> > Triangle, NC Embedded Computing mailing list<br>
>>> > <a href="javascript:;" onclick="_e(event, 'cvml', 'TriEmbed@triembed.org')">TriEmbed@triembed.org</a><br>
>>> > <a href="http://mail.triembed.org/mailman/listinfo/triembed_triembed.org" target="_blank">http://mail.triembed.org/mailman/listinfo/triembed_triembed.org</a><br>
>>> > TriEmbed web site: <a href="http://TriEmbed.org" target="_blank">http://TriEmbed.org</a><br>
>>> ><br>
>>><br>
>>><br>
>>><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> Message: 5<br>
>>> Date: Wed, 2 Dec 2015 10:29:44 -0500<br>
>>> From: Shane Trent <<a href="javascript:;" onclick="_e(event, 'cvml', 'shanedtrent@gmail.com')">shanedtrent@gmail.com</a>><br>
>>> To: Chip McClelland <<a href="javascript:;" onclick="_e(event, 'cvml', 'chip@mcclellands.org')">chip@mcclellands.org</a>><br>
>>> Cc: "<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>" <<a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>><br>
>>> Subject: Re: [TriEmbed] Is there a FET trick for this?<br>
>>> Message-ID:<br>
>>> <<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'CAAFjd3rLUnu7yEoCyOjVsbejMFUmAucAfH0FkNZuTwGCHXOoLQ@mail.gmail.com')">CAAFjd3rLUnu7yEoCyOjVsbejMFUmAucAfH0FkNZuTwGCHXOoLQ@mail.gmail.com</a>><br>
>>> Content-Type: text/plain; charset="utf-8"<br>
>>><br>
>>> Chip,<br>
>>><br>
>>> If I follow, I believe you can achieve your goal by connecting the power<br>
>>> terminal on your incoming FTDI connector directly to your Digital I/O pin<br>
>>> and then connect this node to your PCB Vcc via a diode (or a Schottky<br>
>>> diode<br>
>>> for a slightly lower voltage drop).<br>
>>><br>
>>> This would power your board from the FTDI through the diode when<br>
>>> connected,<br>
>>> so your board is operating at one diode drop below the FTDI's Vcc. But<br>
>>> the<br>
>>> UART Friend would only see power when you drive the FTDI pin's Vcc pin<br>
>>> high<br>
>>> via the digital I/O pin. When powered via the I/O pin the extra diode<br>
>>> will<br>
>>> do nothing since the chip is powered from VCC, the I/O pin will be<br>
>>> incapable of rising a diode drop above Vcc so the diode will never be<br>
>>> forward biased. You would want to ensure you never try to drive the I/O<br>
>>> pin<br>
>>> low when FTDI cable is connected.<br>
>>><br>
>>> Shane<br>
>>><br>
>>> On Wed, Dec 2, 2015 at 8:01 AM, Chip McClelland via TriEmbed <<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'triembed@triembed.org')">triembed@triembed.org</a>> wrote:<br>
>>><br>
>>> > All,<br>
>>> > Down to the final stretch on my new board - just need one more piece of<br>
>>> > advice.<br>
>>> ><br>
>>> > I am trying to see if there is a way to accomplish something without<br>
>>> > resorting to a physical jumper. I would like to use the FTDI header on<br>
>>> my<br>
>>> > new board in two ways with respect to the power pin.<br>
>>> ><br>
>>> > 1) when I connect a FTDI connector, it could power the board. The power<br>
>>> > pin is connected directly to the board's power rail. This is how it is<br>
>>> > today.<br>
>>> ><br>
>>> > 2) when I connect the Adafruit UART friend, I can turn it on and off<br>
>>> using<br>
>>> > one of the Arduino's digital pins. In this scenario, I only want the<br>
>>> power<br>
>>> > pin connected to the digital pin on the Arduino.<br>
>>> ><br>
>>> > Is there some way to automatically switch between these two modes<br>
>>> based on<br>
>>> > whether there is power supplied by the FTDI adapter?<br>
>>> ><br>
>>> > Thanks,<br>
>>> ><br>
>>> > Chip<br>
>>> ><br>
>>> ><br>
>>> ><br>
>>> ><br>
>>> > --<br>
>>> > Sent from my iPhone - please excuse the typos<br>
>>> ><br>
>>> > _______________________________________________<br>
>>> > Triangle, NC Embedded Computing mailing list<br>
>>> > <a href="javascript:;" onclick="_e(event, 'cvml', 'TriEmbed@triembed.org')">TriEmbed@triembed.org</a><br>
>>> > <a href="http://mail.triembed.org/mailman/listinfo/triembed_triembed.org" target="_blank">http://mail.triembed.org/mailman/listinfo/triembed_triembed.org</a><br>
>>> > TriEmbed web site: <a href="http://TriEmbed.org" target="_blank">http://TriEmbed.org</a><br>
>>> ><br>
>>> ><br>
>>><br>
>>><br>
>>> --<br>
>>><br>
>>> A blog about some of my projects. <a href="http://fettricks.blogspot.com/" target="_blank">http://fettricks.blogspot.com/</a><br>
>>> -------------- next part --------------<br>
>>> An HTML attachment was scrubbed...<br>
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>>> ><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> Subject: Digest Footer<br>
>>><br>
>>> _______________________________________________<br>
>>> TriEmbed mailing list<br>
>>> <a href="javascript:;" onclick="_e(event, 'cvml', 'TriEmbed@triembed.org')">TriEmbed@triembed.org</a><br>
>>> <a href="http://mail.triembed.org/mailman/listinfo/triembed_triembed.org" target="_blank">http://mail.triembed.org/mailman/listinfo/triembed_triembed.org</a><br>
>>><br>
>>><br>
>>> ------------------------------<br>
>>><br>
>>> End of TriEmbed Digest, Vol 31, Issue 2<br>
>>> ***************************************<br>
>>><br>
>><br>
>><br>
>> --<br>
>> Sent from my iPhone - please excuse the typos<br>
>><br>
>> _______________________________________________<br>
>> Triangle, NC Embedded Computing mailing list<br>
>> <a href="javascript:;" onclick="_e(event, 'cvml', 'TriEmbed@triembed.org')">TriEmbed@triembed.org</a><br>
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> --<br>
><br>
> A blog about some of my projects. <a href="http://fettricks.blogspot.com/" target="_blank">http://fettricks.blogspot.com/</a><br>
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