Nothing close enough? Start from a blank circuit diagram → Describe it in one paragraph.
How to use a circuit diagram template.
- 01Describe your battery management needs
Start by telling the AI what you want: e.g., “ESP32 with solar charger and battery monitor using INA219.”
- 02Review the generated schematic
The tool instantly builds a circuit diagram with the correct components—charging ICs, voltage dividers, protection modules—and labels connections.
- 03Customize components and values
Adjust resistor values, swap out parts, or add extra sensors like a fuel gauge. The editor updates in real time.
- 04Export or share your diagram
Download as PNG, SVG, or copy the schematic URL to share with your team. You can also embed it in documentation.
Questions about circuit diagram templates
What battery management circuits work best with ESP32?
Common configurations include TP4056-based Li-Ion chargers, voltage dividers for ADC monitoring, and ICs like INA219 or MAX17048 for precise fuel gauging. The ESP32’s deep sleep mode benefits from low-quiescent-current LDOs and P-channel MOSFET load switches.
Can I power an ESP32 directly from a Li-Ion battery?
Yes, but you need a 3.3V regulator. A Li-Ion battery range is 4.2V down to 3.0V; a low-dropout (LDO) regulator or buck converter is essential. Built-in USB charging via TP4056 is a popular combination.
How do I add over-discharge protection to an ESP32 circuit?
Use a battery protection IC like DW01 or a protected battery cell. You can also implement software-based low-voltage cutoff by reading battery voltage via ADC and putting the ESP32 into deep sleep before the voltage drops too low.
What’s the simplest way to monitor battery level on an ESP32?
Use a voltage divider connected to an ADC pin. For example, a 180kΩ + 100kΩ divider scales a 4.2V battery down to ~1.5V. Read the ADC and map it to percentage. For higher accuracy, add an external ADC like ADS1115.
Can I charge a Li-Ion battery while the ESP32 is running?
Absolutely. Charging ICs like TP4056 or MCP73831 handle load sharing; they will power the ESP32 and charge the battery simultaneously. Just ensure your power source can provide enough current for both.