Voltage Dividers: How to Safely Bridge 24V to MCU Logic
In industrial environments, 24V DC is the standard. However, the microcontrollers we use for hobbyist and “Open Automation” projects—like the Arduino (5V) or ESP32 (3.3V)—will be instantly destroyed if they receive a 24V signal. To bridge this gap, we use a Voltage Divider. This simple circuit uses two resistors to “scale down” a high voltage … Read more