<div dir="ltr"><div class="gmail_default" style="font-size:small">I agree with Jim. DPRG has opened up a group of people with vast knowledge on all <br></div><div class="gmail_default" style="font-size:small">disciplines required to build robots. This is invaluable for us that are remotely located.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Thank you DPRG!</div><div class="gmail_default" style="font-size:small">Pat Caron</div><div class="gmail_default" style="font-size:small">Ontario, Canada<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Oct 27, 2021 at 2:13 PM Jim Merkle via DPRGlist <<a href="mailto:dprglist@lists.dprg.org" target="_blank">dprglist@lists.dprg.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:10pt;font-family:Verdana,Geneva,sans-serif">
<p>If any of you subscribe to Reddit - Arduino group, you'll see generic questions all the time, many of which are from "tire kickers", folks just thinking about purchasing something but haven't committed to anything yet. I don't bother getting involved unless the user indicates they have actual hardware they are working with.</p>
<p>Since Kumar had already purchased an STM32 NUCLEO board, (I love the STM32 NUCLEO boards in general), I had to get involved.</p>
<p>"Which development environment" is the 2nd most asked question when it comes to STM32 boards. The most asked is "which STM32 board?". Unfortunately, many folks begin STM32 exploration with a "Blue Pill". I HATE that platform!!! Although it's cheap, they often have clone chips and require plenty of additional hardware already provided with a NUCLEO board.</p>
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<p>Much of the capability model involves the individual and their talent set...</p>
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<p>What DPRG provides is mentorship... Folks that are willing and able to help others get from one <em>Level</em> to the next. Thanks GUYS !</p>
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<p>The "Build More Robots" is an excellent tool / program to help bring people (and their robots) from "Level 0.0.0" to "Level 5.0" (or so).</p>
<p><a href="https://www.dprg.org/build-more-robots-series/" target="_blank">https://www.dprg.org/build-more-robots-series/</a></p>
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<p>I truly appreciate DPRG !</p>
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<div style="margin:0px;padding:0px;font-family:monospace">Jim Merkle<br>Carrollton, TX 75007<br><a href="mailto:jim@merkles.com" target="_blank">jim@merkles.com</a></div>
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<p id="gmail-m_7248300243185074678gmail-m_-7259412419273176264reply-intro">On 2021-10-27 10:03, Chris N via DPRGlist wrote:</p>
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<div style="font-size:x-small"><span style="font-size:small">So in part because of questions along the line of "where do I get started" from Kumar, and others before him, that we occasionally get, I thought it might help to have some sort of capability model in mind that can be referenced. <br></span></div>
<div style="font-size:x-small"><span style="font-size:small"> </span></div>
<div style="font-size:x-small"><span style="font-size:small">That way one can ask "OK - what level are you at currently? What level are you trying to reach in the near term?"<br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Below is what I mean. For now this is focused on software and locomotion (but starting with Level 8, perception comes into the picture)<br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">I have more explanation to go along with each item but wanted to keep it brief in this e-mail. <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">The idea is not to explain how to do these things. This just represents milestones along the journey. This is really more about having an agreed upon vocabulary.<br></span></div>
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<div><span style="font-size:small">Thoughts? Is something like this helpful to have written down? Is it already written down somewhere ? (I am sure that in some ways, this is captured in some of the material that David Anderson has published over the years)<br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small"> Level 0: I have an API through which I can control the speed and direction of the individual wheels. My robot can move! <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 1: I have an API through which I can reliably get the incremental encoder counts for each wheel. When motors are commanded with a certain duty cycle, I can measure what that translates to in terms of encoder counts per time unit.<br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 2: I am keeping track of my Robot's X, Y and Theta via dead-reckoning / odometry <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 3: I have taken at least basic steps to calibrate my robot's odometry calculations. <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 4: I can command the robot to move, but using more abstract units such as "meters/second" or at least "encoder ticks per time unit" <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 5: My robot actually moves at the linear and angular velocity I tell it to, even when battery voltage is lower or surface friction is higher. And because I have completed Level 3, <span style="font-size:small">it can go in a somewhat straight line when I ask it to. </span></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 6: My robot moves in a fairly smooth fashion, i.e. it changes speed and direction somewhat gradually. Movement is not "robotic" <br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 7: I can command my robot to go to a certain X,Y coordinate aka waypoint relative to its current location, and the robot more or less reaches that location provided nothing is in the way<br></span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 8: My robot can reach the target location, even if there are obstacles in the way.</span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 9: My robot can come back after reaching its destination.</span></div>
<div><span style="font-size:small"> </span></div>
<div><span style="font-size:small">Level 10: My robot can do all this, even if the obstacles are moving around quite a bit or if there are other sources of possible confusion<br></span></div>
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