DS3231 RTC wakes up ESP-32Cam periodically and a photo is sent to a Telegram bot.
Power ON > send photo and/or message > alarm is set for the next power ON > alarm is enabled > Power turned OFF
https://www.youtube.com/watch?v=TPH_MbMufHI (timelapse done with virtualdub using photos exported from Telegram Desktop)
This project utilizes the following Arduino libraries:
https://github.com/cotestatnt/AsyncTelegram https://github.com/cotestatnt/AsyncTelegram/blob/master/REFERENCE.md https://github.com/adafruit/RTClib
https://asciiflow.com/ http://www.jave.de/
5V
+
|
+-----------+
+-+ |
10K | | + +--+S
+++ | |
| G | + |
+------------+--------+--+ AO3401 P-CHANNEL MOSFET
| |
| | +
| + +--+D
| |
| +------+------+
| | 5V |
| | |
| +---+----+3.3V |
| | | | |
+----+----+ +++ +++ | |
| SQW | | | | |10K| |
| | | | | | | ESP32CAM |
| DS3231 | +++ +++ | |
| | | | | |
| SDA +---+--------+IO14 |
| | | | |
| SCL +-------+----+IO15 |
| | | |
+-----+---+ +----+--------+
| |
+-----------+---------+
|
+
GROUND
Another hardware version with DS3231 chip taken from the breakout board:
Example photo in UXGA resolution, whie balance set to Cloudy
