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| projets:fuz:operame [2021-11-14 14:35] – [Hardware] +remaining bill of materials Lomanic | projets:fuz:operame [2024-10-16 00:37] (current) – [Planned] cave -> basement Lomanic |
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| * Owner: [[:user:Lomanic]] | * 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]]** | * Project created on **Sun 14-11-21** by **[[:user:Lomanic]]** |
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| * 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 | * 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 | * Document it in English |
| * Maybe extend it in some way (automatic VAC system?) | * Maybe extend it in some way (automatic ventilation system?) |
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| ===== Hardware ===== | ===== Hardware ===== |
| * [[https://www.aliexpress.com/item/33048962331.html|LILYGO® TTGO T-Display]], ''16MB CH340K Chip'' variant | * [[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/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) | * [[https://www.aliexpress.com/item/32546265487.html|perfboard]] (bought years ago, look around for cheaper options) |
| * solid core wire (left overs from other projects) | * solid core wire (left overs from other projects) |
| {{: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_123700.jpg?200|The Operame device is shown mounted on temporary breadboards with bridges made of Dupont wires as a proof of concept}} |
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| | {{:projets:fuz:operame:img_20211114_171043.jpg?200|Perfboard implementation, front}} |
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| | {{:projets:fuz:operame:img_20211114_171053.jpg?200|Perfboard implementation, back}} |
| ===== Log ===== | ===== Log ===== |
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| Initial proof of concept with breadboard, everything works perfectly. | Initial proof of concept with breadboard, everything works perfectly. |
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| | 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. |
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| | 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 ===== | ===== 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 basement |
| * 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? |
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