AC - DC Current Monitoring Project with ACS712 and LCD Display

Portable AC/DC Current Monitor with ACS712 & I2C LCD Overview: Compact AC/DC current measuring project using the ACS712 5A sensor and Arduino Nano R3 (ATmega328). Users set a maximum current limit with a 10KΩ potentiometer; the unit shows both the set limit and real-time load current on a 16x2 White-on-Blue LCD via an I2C adapter. When the load exceeds the limit, the display indicates the event and a 5V active buzzer sounds an alarm. Powered and charge-ready using a TP4056 1A Li-Ion charger module. Specifications Current sensor: ACS712 (5A) Microcontroller: Arduino Nano R3 (ATmega328) Limit adjuster: 10KΩ potentiometer (variable resistor) Display: 16x2 LCD (White on Blue) with I2C LCD adapter Alarm: 5V Active Buzzer – Loud Beep Power/charging: TP4056 1A Li-Ion battery charger module Wiring: Slim flexible project wire cable Features: User-set max current limit, real-time current readout, visual alert and audible alarm on overcurrent Use: DIY electronics, teaching demo, small load monitoring