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Project idea: https://miro.com/app/board/uXjVLBm7F8w=/?share_link_id=117991010729 | Project idea: https://miro.com/app/board/uXjVLBm7F8w=/?share_link_id=117991010729 | ||
== Motivation == | |||
In order to observe my houseplants' respiration, a prototype of (soap) bubble maker machine is being developed. The quantity of (soap) bubbles will be in accordance to the CO<sub>2</sub> level of the plants' (closed) environment. | |||
== Materials == | |||
* ESP32 | |||
* CO<sub>2</sub> sensor MH-Z19C | |||
* Stepper motor 28BYJ-48 | |||
* Stepper motor driver module ULN2003 | |||
* PWM fan AMD Ryzen 7 1700 | |||
* 10kΩ resistor | |||
* Power supply 12 volts | |||
* Lots of cables... | |||
== Gallery == | |||
[https://nextcloud.uni-weimar.de/s/qSHqbfojNCGmAdH The Plant Plant Gallery (Nextcloud Bauhaus Uni), Password: theplantplant] (CO<sub>2</sub> sensor first trial pictures are inside) | |||
== References == | |||
===== CO<sub>2</sub> sensor MH-Z19C ===== | |||
* https://www.neumueller.com/datenblatt/neumueller/MH-Z19C.pdf (Datasheet) | |||
* https://randomnerdtutorials.com/esp32-uart-communication-serial-arduino/ (Concept, wiring, code) | |||
===== PWM fan AMD Ryzen 7 1700 ===== | |||
* [https://www.youtube.com/watch?v=YBNEXWp-gf0&list=PLEyreKy4HkAVP-ia8E9pZ6RGObHVtp3l_&index=5 Arduino Fan Control using High Frequency 25kHz PWM // 4-Wire CPU Fans - YouTube] (Concept, wiring, code); adapted to ESP32 | |||
===== Stepper motor 28BYJ-48 and stepper motor driver module ULN2003 ===== | |||
* https://randomnerdtutorials.com/esp8266-nodemcu-stepper-motor-28byj-48-uln2003/ (Concept, wiring, code); adapted to own implementation | |||