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--- playground:thbbi [2021/05/02 01:45] – [intro] inne
+++ playground:thbbi [2023/10/13 20:50] (current) – [Meest recent] inne
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 ====== Meest recent =======
+Kado Letters en naambordje.
+Geleerd:
+Linux Verdana is anders dan windows Verdana dus als je de 3D print en de lasercutter infill op andere computers genereerd met dezelfde OpenSCAD code dan past het toch niet.
+Gespiegeld laseren zorgt ervoor dat de rand die de onderkant wordt ligt naar binnen trekt. Omdat de onderkant van de letter dan op de bovenkant van de te laseren acryl plaat ligt.
+Met de juiste letters heb je geen extra tolerances nodig voor de oranje vulling.
+===== Feedback =====
+Naam:        Datum:      \\
+Feedback
+====== Oudere Blogs =======
 Doel: Stukje schrijven voor Adafruit's CircuitPython newsletter n.a.v. de [[https://www.youtube.com/watch?v=jN87Lz4fI-4&t=1662s|show and tell]] van 03-03-2021.
-Publicatie plek: [[https://hackaday.io/pages/294794|HackadayIO]]\\
+Publicatie plek: [[https://hackaday.io/page/10671-making-soft-bubbles|HackadayIO]]\\
-status: proofreaden (prepublicatie)\\
+status: Gepubliceerd\\
-datum: 19-04-2021
+datum: 11-05-2021
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 {{ :playground:thbbi:instalatie_schemer.jpg?direct&300 |}}
+<WRAP>
+++++Folded part|
 ==== road to winter festival ====
-In the summer of 2019 I found myself with a bit of time on my hands - what a good oppurtunity to do some experiments with soft robotics. The first step is ordering a lot of silicone. It isn't cheap, however 1kg of **type** shore 8A (very flexible) will go a long way and it is super multi purpose. **luckily the**  Other things you'll need are DC-airpumps, solenoid valves, some kind of h-bridge and a micro-controller though all these are not expensive. (omschrijven naar eerste persoon)
+In the summer of 2019 I found myself with a bit of time on my hands. So a great opportunity to do some experiments with soft robotics. The first step was ordering a lot of silicone. This isn't cheap, however 1kg of type shore 8A (very flexible) will go a long way and it is super multi purpose. luckily [[https://softroboticstoolkit.com/low-cost-ep-circuit|the other things]] like DC-airpumps, solenoid valves, some kind of h-bridge and a micro-controller were reasonably priced, i.e. cheap.
 {{ :playground:thbbi:construction_winterfestival.jpg?direct&300|}}
-<del>Next</del> **As with with anythings that's unfamiliar** its wise to start designing something simple. A soft robotic bubble is a great project. It let's you get the hang of both motor control and pouring silicone. The less complexity the less that can go wrong. <del>And you can still tell your peers you are working on a one degrees of freedom soft robotic actuator.</del>
+As with anything unfamiliar its wise to start designing something simple. A soft robotic bubble is a great project. It lets you get the hang of both motor control and pouring silicone.
+The less complexity the less that can go wrong. For dealing with the always critical onlooker, just tell them you are working on a one degrees of freedom soft robotic actuator. Which is what I ended up making.
 Around the time I was working on this, our community Makerspace got visited by the neighborhood committee. They were looking to spice up the local winter festival with some technology. The prototype bubble turned into an "art" installation of 17 independent bubbles that could change color via Neopixels. Scaling the prototype and making a fitting enclosure for it took a lot of effort. But with tons of help from my awesome fellow Makerspace participants we managed to finish the installation just in time.
-The winter festival is a weekend long event with, by and for our neighborhood. It's free and anyone is welcome to visit. The soft robotic bubbles garnered a lot of attention especially with the many kids on the festival. The bubbles themselves proved to be very robust which made the installation weirdly interactive. It is nice to have something to show for your work and I really enjoyed my time at the festival.
+The winter festival is a weekend long event with, by and for our neighborhood. It's free and anyone is welcome to visit. The soft robotic bubbles garnered a lot of attention especially with the many kids at the festival. The bubbles themselves proved to be very robust which made the installation weirdly interactive. It is nice to have something to show for your work and I really enjoyed my time at the festival.
-{{ :playground:thbbi:winterfestival_bubble_smaller.png?direct&400 |}}
+{{:playground:thbbi:winterfestival_bubble_v6.png?direct&400 |}} {{ :playground:thbbi:winterfestival_in_action_v2_med.mp4?direct&500|}}
 ==== road to desktop bubble ====
-The festival bubbles have some unresolved challenges. <del> Due to time constraints the neopixels under the bubbles were just displaying the best parts of the Adafruit strand test code, luckily rainbow swipe is beautiful.</del> It also wasn't possible to control the airpumps and the neopixel animation at the same time. It made the whole <del>thing</del> (installation) look very rigid.  The bubbles were also lacking a pressure sensor. **This** proved not to be a mandatory part since testing showed that the airpumps couldn't burst the bubbles. **However pressure sensing will be nice to have when program the behavior of robots.**
+The festival bubbles have some unresolved challenges. Time constraints made the neopixels run a selection of the code used to test LED-strips.Thankfully the Adafruit strandtest.ino code has some beautiful parts, especially the rainbow chase can be quite nice. Another weak point was that it wasn't possible to control the airpumps and the neopixel animation at the same time. This made the whole thing look very rigid.  The bubbles were also lacking a pressure sensor. Though testing proved it wasn't mandatory to have one since the airpumps couldn't burst the bubbles. A soft roboticist might also call this unintentional compliant design, but I am not scared of admitting my shortcomings. Most of all pressure sensing will be nice to have when programming the behavior of the robots.
+When I heard the announcement of the raspberry pi Pico, I got pretty excited about the PIO functionality. PIO seems to be perfect to control both neopixels and airflow, while still being able make decisions with the main loop. So a great prospect for soft robotics control. Thus I decided to reincarnate the festival bubbles into a desktop bubble, a portable soft bubble for code testing, prototyping and showing of soft robotics.
-**When I heard heard** <del>the announcement of the raspberry pi pico on "Ask an engineer", it seemed that the PIO functionality would be perfect to control both neopixels and airflow while still being able make decisions on the main loop. Seemingly perfect for soft robotics control. Thus the decision was made to reincarnate the festival bubbles into a desktop bubble, a portable soft bubble for code testing, prototyping and showing of soft robotics.</del>
+Assembling the first version went pretty well. The  electronics for the festival prototype could be reused and there were still spare bubbles. Running Circuit Python on the Pico was also really straightforward. The only challenging bit so far was running the airpump via PIO. Though with the book, the datasheet and code examples (which were are all really readable) I got the job done in the end. Since then there have been learn guides[link to guide] published about how to specifically do PIO on Circuit Python so it should be more straightforward to get into at the time writing. All said and done it was still pretty fun.
-Assembling the first version went pretty well. The prototype electronics of the festival bubble could be reused and there were still spare bubbles. Running Circuit Python on the pico was also really straightforward. The only challenging bit so far was running the pump via PIO. But a little treasure hunt <del>from</del> **starting at the** Neopixel Pio Learn guide -> getting started with Pico book -> Pico documentation -> code examples of the PIO library did the trick. Since then there have been learn guides published about how to specifically do PIO on Circuit Python so it should be more straightforward to get into at the time writhing. All said it was still pretty fun.
+{{:playground:thbbi:desktop_bubble_v1_030321.jpg?direct&400 |}} {{:playground:thbbi:Desktop_Bubble_v1.mp4?direct500|}}
-{{:playground:thbbi:desktop_bubble_v1_030321.jpg?direct&400 |}}
 ==== what is next? ====
-The next milestone will be adding the pressure sensor and making it battery powered. It would be nice to turn the Desktop Bubble into a <del>learn guide</del> and the electronics into a feather wing. <del>Hopefully, making it easier to start out, I really want to see more hobbyist soft robotics projects.If you see something cool let me know!
+The next milestone will be adding the pressure sensor and making it battery powered. My main goal is to turn the Desktop Bubble into a learn guide and the electronics into a feather wing. Hopefully this will make starting out easier and also encourage more people to give soft robotics a try. It would be nice to see more hobby level projects using these techniques.So if you see something cool let me know!
-</del>
-**Hopefully this will make things easier and encourage more people to give soft robotics a try. It would be nice to see more hobby level projects using these techniques. If you see something cool let me know!**
 ===== Feedback =====
 Naam:        Datum:      \\
 Feedback
-====== Oudere Blogs =======
-Nog geen.
+ ++++
+</WRAP>

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