Differences

This shows you the differences between two versions of the page.

--- projets:fuz:operame [2021-11-14 14:35] – [Hardware] +remaining bill of materials Lomanic
+++ projets:fuz:operame [2022-01-15 01:40] – [Planned] +PID detailed doc Lomanic
@@ Line 4: / Line 4: @@
   * Owner: [[:user:Lomanic]]
-  * Participants: you?
+  * Participants: none
-  * Status: **proof of concept**
+  * Status: **deployed at Lomanic's office**
   * Project created on **Sun 14-11-21** by **[[:user:Lomanic]]**
@@ Line 11: / Line 11: @@
   * Implement [[https://operame.nl/Operame|Operame]], a project from the Dutch hackerspace [[https://revspace.nl|Revspace]] using a CO2 sensor coupled to a TTGO T-Display to tell people in a room that they should open the windows to limit Covid-19 aerial spread indoors
   * Document it in English
-  * Maybe extend it in some way (automatic VAC system?)
+  * Maybe extend it in some way (automatic ventilation system?)
 ===== Hardware =====
@@ Line 17: / Line 17: @@
   * [[https://www.aliexpress.com/item/33048962331.html|LILYGO® TTGO T-Display]], ''16MB CH340K Chip'' variant
   * [[https://www.aliexpress.com/item/1005001947070873.html|Winsen MH-Z19C NDIR CO2 Sensor]], ''400-2000ppm-Pin Ver.'' variant, difficulty was to buy a genuine version as mentioned on the [[https://operame.nl/Hardware|Hardware page]], the tip is to buy from Winsen official store even if costlier
-  * [[https://www.aliexpress.com/item/32861400498.html|through-hole header pins]] (bought years ago, look around for cheaper options)
+  * [[https://www.aliexpress.com/item/32861400498.html|through-hole female header pins]] (bought years ago, look around for cheaper options)
   * [[https://www.aliexpress.com/item/32546265487.html|perfboard]] (bought years ago, look around for cheaper options)
   * solid core wire (left overs from other projects)
@@ Line 42: / Line 42: @@
 {{:projets:fuz:operame:img_20211114_123700.jpg?200|The Operame device is shown mounted on temporary breadboards with bridges made of Dupont wires as a proof of concept}}
+{{:projets:fuz:operame:img_20211114_171043.jpg?200|Perfboard implementation, front}}
+{{:projets:fuz:operame:img_20211114_171053.jpg?200|Perfboard implementation, back}}
 ===== Log =====
@@ Line 48: / Line 51: @@
 Initial proof of concept with breadboard, everything works perfectly.
+Then perfboard implementation. A first for me, quite the hassle, I probably didn't go the easiest way with the solder traces and then the cables on the back. A multimeter with continuity mode is a must have to ensure there's no short between traces.
+Next time, solder traces are not worth the time and headache and cables should just be soldered through holes with a single solder joint to the next hole.
 ===== Planned =====
-  * put this on a [[wp>perfboard]], for once!
+  * maybe build another one for the hackerspace, but not convinced at all seeing the general attitude of just being maskless in a cave
-  * deploy it somewhere? (at Fuz or at Lomanic's office)
+  * automatic ventilation system at Fuz? ([[wp>PID controller]], [[http://brettbeauregard.com/blog/2011/04/improving-the-beginners-pid-introduction/|"industry-level library"]] according [[https://old.reddit.com/comments/s3fz4l/comment/hsmomjx|to some dude on the Internet]]), [[https://www.fourmilab.ch/hackdiet/www/subsection1_2_3_0_5.html|bang-bang]])
-  * automatic VAC system (if at Fuz)?
+  * statistics?