Differences

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--- amc:ss2023:group-y:start [2023/07/24 13:35] – [Define email] hoi-fung.sam
+++ amc:ss2023:group-y:start [2023/07/24 14:49] (current) – [2.1.3 Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger - bq24074] hoi-fung.sam
@@ Line 46: / Line 46: @@
 The ESP32-CAM is a popular development board designed for applications requiring a camera module. It includes multiple data pins, a combined Wi-Fi and camera module, and a microSD card slot for easy storage. In this project we mainly use the Wi-Fi function and following pins: Power Pins (5V, 3.3V and GND), general purpose input/output pins (GPIO12), serial pins (U0R, U0T) and GPIO0.\\
 ====2.1.3 Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger - bq24074====
+The micro lipo charger is designed to charge Lithium Polymer or Lithium Ion (LiPoly/LiIon) batteries via a USB Type-C connection, DC or Solar power. This charger charges the batteries by plugging into a USB port and a 3.7V/4.2V LiPoly/LiIon to JST plug.\\
+The Micro-Lipo charger is charged in three stages. Firstly, pretreatment charging, then constant current fast charging, and finally constant voltage trickle charging. The charger has a 0.1-inch connector, D+ and D- data lines, 100mA charging current, which can be adjusted to 500mA by soldering off the jumper.
 ====2.2 Method:====
 ====2.2.1 Wire connection to upload the code====
@@ Line 756: / Line 759: @@
 =====5.Reference=====
+[[https://cdn-learn.adafruit.com/downloads/pdf/adafruit-bq24074-universal-usb-dc-solar-charger-breakout.pdf|Adafruit Universal USB / DC / Solar
+Lithium Ion/Polymer charger - bq24074]]\\
+[[https://wiki.seeedstudio.com/UartSBee_v5/|UartSBee V5]]\\
+[[https://randomnerdtutorials.com/esp32-cam-send-photos-email/|ESP32-CAM: Take and Send Photos via Email using an SMTP Server]]\\
+[[https://randomnerdtutorials.com/esp32-deep-sleep-arduino-ide-wake-up-sources/|ESP32 Deep Sleep with Arduino IDE and Wake Up Sources]]\\
+[[https://lastminuteengineers.com/pir-sensor-arduino-tutorial/#sensitivity-adjustment|How HC-SR501 PIR Sensor Works & Interface It With Arduino]]\\
+[[https://www.arrow.com/en/research-and-events/articles/understanding-active-and-passive-infrared-sensors|The Right Tool for the Job: Active and Passive Infrared Sensors]]\\
+[[https://learn.adafruit.com/pir-passive-infrared-proximity-motion-sensor/how-pirs-work|How PIRs Work]]