Project Idea
This project is designed to monitor and control the temperature of industrial devices according to user-defined limits. It uses an 8051 microcontroller and DS1621 digital thermometer/thermostat to sense temperature, display it on an LCD, and control external loads like heaters. User settings are stored in EEPROM for non-volatile operation.
Components
8051 Microcontroller
DS1621 Temperature Sensor
EEPROM 24C02
Crystal Oscillator
Resistors, Capacitors, Diodes
Transistors & Relay Driver Circuit
Relay & Lamp
LED Indicators
Push Buttons & Switches
PCB & Breadboard
Transformer/Adapter
Cables & Connectors
IC Sockets
Power Supply Circuit
Project Features
Real-time temperature sensing using DS1621
LCD display for temperature readings
User-adjustable min/max temperature limits
Automatic relay-based load control
Non-volatile storage of settings in EEPROM
8051 microcontroller-based control logic
Simple and compact design
Applications
Industrial machinery temperature control
Laboratory equipment temperature monitoring
Food processing temperature regulation
HVAC systems
Thermal safety systems
📦 Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code
(For DIY KITs - only the components will be provided)
Project Types:
- DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
- DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
- Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
- Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Dimensions:
Approx. 20 cm(L) x 15 cm(W) x 8 cm(H)
Shipping dimensions:
length: 25cm
width: 20cm
height: 10cm
Weight:
Approx. 750 grams
Estimate project weight: 2kg
Notes: All the products are made by LearnElectronics India and not for re-sale.

