There are many simple embedded system projects that are suitable for beginners. Here are a few ideas:

LED blinker: This is a classic beginner project that involves programming a microcontroller to turn an LED on and off at regular intervals.

Temperature sensor: This project involves using a temperature sensor to measure the ambient temperature and displaying the result on an LCD screen.

RFID door lock: This project involves using an RFID reader and a servo motor to build a simple electronic door lock that can be opened using a RFID tag.

Line following robot: This project involves building a small robot that can follow a line on the ground using sensors.

Home automation system: This project involves building a simple home automation system using IoT devices that can control lights, appliances, and other devices using a microcontroller and a smartphone app.

Automatic plant watering system: This project involves building a system that can automatically water plants when the soil moisture level falls below a certain threshold.

Automatic pet feeder: This project involves building a device that can dispense food to a pet at a specific time or when a sensor detects that the food level is low.

Voice-controlled light: This project involves using a voice recognition module to control a light or other device using spoken commands.

Digital dice: This project involves building a device that can roll a virtual dice using a microcontroller and display the result on an LCD screen.

Smart parking system: This project involves building a system that can detect when a parking space is occupied and display the information on a display or through a smartphone app.

These are just a few more examples of simple embedded system projects that are suitable for beginners.