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--- iothings:proiecte:2025sric:homemonitoringsystemwithalerts [2025/05/24 14:15]
andrei.buhnici [Thingsboard]
+++ iothings:proiecte:2025sric:homemonitoringsystemwithalerts [2025/05/24 14:37] (current)
andrei.buhnici [References]
@@ Line 1071: / Line 1071: @@
 ====== Challenges ======
+The most challenging thing was to actually take the photo, because it needed a bit more setup with the google cloud and the actual taking of the photo. And also i really struggled with the google script because it was returning a redirect response and i had to figure out how to follow the redirect link in order to get the image URL. It took me a lot of time to realise i can just extract the url from the body of the redirect message and just make another request. Also i first wanted to send the image url through BLE to the main ESP32 and it took me a while to realise that BLE and Wi-Fi don't really work simultaneously, because there is interference and communication ordering and stuff. So i had to give that up and find another way, because i really didn't want to connect wires since i was skeptical about how to connect them. So i eventually came up with a web server and then it went smoothly.
+Another big challenge was how to send SMS only once and not every time an "alarm" is triggered. And to achieve what i have now i reached the limit of free sms messages sent in 3 different days. I first tried to keep count of alarms in Thingsboard but it didn't went well and i just figured that i can manage the alarm stuff locally and just set them off from the cloud and that's exactly what i did. Now an alarm triggers once until it's turned off.
+And the last challenge i encountered was setting the right values for potentiometers and the thresholds set by me.
+There was a lot of trial and error during this project but thankfully nothing was fried :D.
 ====== References ======
+- https://thingsboard.io/docs/devices-library/esp32-dev-kit-v1/
+- https://docs.sunfounder.com/projects/umsk/en/latest/03_esp32/esp32_lesson04_mq2.html
+- https://www.electronicwings.com/esp32/pir-sensor-interfacing-with-esp32
+- https://circuitdigest.com/microcontroller-projects/interface-ky038-sound-sensor-with-esp32
+- https://randomnerdtutorials.com/esp32-cam-take-photo-save-microsd-card/
+- https://www.niraltek.com/blog/how-to-take-photos-and-upload-it-to-google-drive-using-esp32-cam/
+- https://ocw.cs.pub.ro/courses/iothings/laboratoare/2022/lab3
+- https://thingsboard.io/docs/user-guide/ui/rule-chains/