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Where is the positive and negative terminals on this battery?
mantonio

mantonio

@copilot Where is the positive and negative terminals on this battery?
1y

copilot

It seems like your project's description doesn't include a specific battery component. However, I can offer you some general guidance on identifying the positive and negative terminals of most common battery types:
  1. Standard Cylindrical Batteries (e.g., AA, AAA):
    • The positive terminal is usually marked with a "+" and is the smaller circular end.
    • The negative terminal is usually flat and may be marked with a "-".
  2. Button Cell Batteries:
    • The larger flat side is typically the positive terminal and is often marked with a "+".
    • The smaller side is the negative terminal.
  3. Lithium Polymer or Lithium-Ion Batteries:
    • These might have marked wires or pads. The red wire usually indicates positive ($+$), and the black wire indicates negative ($-$).
If you provide the specification or model number of the battery, I can offer more detailed instructions specific to your battery type. Alternatively, if you specify where you need to connect the battery in your project, I can help with those connections.
1y
mantonio

mantonio

I want the pendant to be usb charged
1y

copilot

To create a USB-charged pendant, you can use the MCP73831T-2ACI/OT as a lithium-ion or lithium-polymer battery charger. Here's how you can connect these components:
Connections:
  1. USB Connector (Mini/Micro/Type-C)
    • USB 5V (VCC):
      • Connect VCC from the USB connector to U4:VINU4: VIN.
    • USB GND:
      • Connect GND from the USB connector to U4:VSSU4: VSS.
  2. MCP73831T-2ACI/OT Charger
    • Battery Connection:
      • Connect U4:VBATU4: VBAT to the positive terminal ($+$) of your battery.
      • Connect the negative terminal ($-$) of the battery to a common GND.
  3. ESP32-CAM and other components:
    • Powering the ESP32-CAM:
      • Connect ESP32−CAM1:5VESP32-CAM1:5V to the battery's positive terminal.
      • Connect ESP32−CAM1:GNDESP32-CAM1:GND to the battery's negative terminal.
  4. Battery Status Indicator (optional):
    • Status LED:
      • Connect an LED with a current-limiting resistor between U4:STATU4: STAT and GND. The LED indicates the charging status.
Detailed Connection List:
  • Connect USB 5V (VCC) to U4:VINU4: VIN.
  • Connect USB GND to U4:VSSU4: VSS.
  • Connect Battery positive terminal to U4:VBATU4: VBAT and ESP32−CAM1:5VESP32-CAM1:5V.
  • Connect Battery negative terminal to a common GND and ESP32−CAM1:GNDESP32-CAM1:GND.
  • (Optional) Connect an LED and resistor between U4:STATU4: STAT and GND to indicate charging status.
By following these connections, you can achieve a USB-charged pendant with the capacity to charge the battery and power the embedded components like the ESP32-CAM and sensors.
1y
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