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<p>Was about to suggest the same. Just did a project that started on
a Uno but switchbacked to Due boards for the additional memory.
Not sure if RAM or ROM ran out but both were at the limits for a
UNO. <br>
</p>
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Rud Merriam K5RUD <br>
<a href="http://mysticlakesoftware.com">Mystic Lake Software</a> <br>
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<div class="moz-cite-prefix">On 08/04/2018 09:03 AM, Doug Paradis
via DPRGlist wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAOdUW+b6cmzXem_nKzEU-m8WB6Yvh-14Ffn--7=zfB1NZrBOiw@mail.gmail.com">
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<div
style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0);text-decoration-style:initial;text-decoration-color:initial">Eric,</div>
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style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0);text-decoration-style:initial;text-decoration-color:initial">
I suggest that you consider having a Arduino Mega sent your
way. It takes<span> </span>more physical<span> </span>space,
but has many more GIO pins. Also, it has 6 external interrupt
pins and I believe 3 PinChange interrupt ports, as well as,
pretty much more of everything else. I was wondering about
your pin assignments for your encoders. It looks like you plan
to use a tachometer type encoder and not<span> </span>quadrature
encoders. The Mega would allow you to use quadrature encoders.
Everything that you have done on the Uno can be transported to
the Mega (you might need to change a pin assignment or two).
It would allow you more freedom to expand. Here is a link to a
reasonably priced Mega, <a
href="http://www.microcenter.com/product/486545/arduino-mega-2560"
target="_blank" moz-do-not-send="true">http://www.microcenter.<wbr>com/product/486545/arduino-<wbr>mega-2560</a>. </div>
<div
style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0);text-decoration-style:initial;text-decoration-color:initial"><br>
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<div
style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0);text-decoration-style:initial;text-decoration-color:initial">Regards,</div>
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style="margin:0px;padding:0px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Helvetica,sans-serif;vertical-align:baseline;color:rgb(0,0,0);text-decoration-style:initial;text-decoration-color:initial">Doug
P.</div>
<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, Aug 4, 2018 at 8:23 AM, Eric
Yundt via DPRGlist <span dir="ltr"><<a
href="mailto:dprglist@lists.dprg.org" target="_blank"
moz-do-not-send="true">dprglist@lists.dprg.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">DPRG,
<div><br>
</div>
<div>I stunned and amazed at how easy working with the
Arduino UNO is. The plethora of example code, libraries
for this and that, and who knows how many tutorials on
Youtube and blogs is mind-boggling. When I finally sat
down with my new UNO and a breadboard, in 2 minutes I
was reading a switch state, 3 minutes later playing a
tune on a piezo speaker, 5 minutes later I had sonar
results streaming on my screen. The young members of
team Rayo Pinky-Pie are thrilled that we'll be able to
navigate and locate objects like dolphins and bats.
Thank you, Doug, for the tip about tying TRIG and ECHO
together -- that worked great! Of course, now I still
need more pins because I'm thinking we could use a 2nd
sonar sensor! jajaja. Now we've got to work on
H-bridge and wheel encoders and our plan to take on the
physical world. Hmmm... we need a gripper. Yep. And
more, bigger batteries. Is there no end to this
madness?! ;-)</div>
<div><br>
</div>
<div>--</div>
<div>Eric</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Aug 1, 2018 at 9:31 AM,
Eric Yundt <span dir="ltr"><<a
href="mailto:eric@facetcorp.com" target="_blank"
moz-do-not-send="true">eric@facetcorp.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>My virtual world is now a spartan 32 KB
Flash, 2 KB SRAM, and a precious 1 KB EEPROM [an
Arduino UNO.]<br>
</div>
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