Project Idea: A Bluetooth‑controlled antenna positioning rig that uses an 8051 board, HC‑05 UART link, and a 28BYJ‑48 stepper via ULN2003 to set angle, direction, and speed from an Android app.
The 16x2 LCD reports live angle/status while a 12V adapter and 7805 regulator power the system for stable field use.Project description
project Description: Commands sent from an Android app over HC‑05 are parsed by the 8051 to drive the ULN2003 stepper stages in full/half‑step sequences, moving the antenna to target headings with L/M/H speed profiles and CW/CCW selection.
Angle/status are displayed on a 16x2 LCD, with accurate timing derived from an 11.0592 MHz crystal for reliable serial communication and UI refresh, powered by a 12V/1A adapter regulated to 5V onboard.
Total components list
Hardware Specifications
- 8051 Microcontroller
- Stepper Motor
- Bluetooth Module
- LCD Display
- Crystal Oscillator
- Resistors
- Capacitors
- Transistors
- Cables and Connectors
- Diodes
- PCB and Breadboards
- LED
- Transformer/Adapter
- Push Buttons
- Switch
- IC
- IC Sockets
- Software Specifications
- Keil µVision IDE
- MC Programming Language: Embedded C
Features:
Android control via HC‑05 UART for angle, direction, and speed setpoints, enabling simple pairing and robust 2.4 GHz connectivity.
Precise motion using 28BYJ‑48 geared stepper with ~64:1 reduction driven by ULN2003 for stable stepping at low speeds.
Live readout on 16x2 LCD for user feedback on current angle and movement status during operation.
Reliable power with 12V/1A adapter and 7805 regulation to 5V rails for MCU, LCD, HC‑05, and driver logic.
Educational 8051 platform with on‑board peripherals and standard 11.0592 MHz clocking suited for serial comms and timing.
Applications
Remote antenna alignment for RF testing, lab demos, and educational training on closed‑loop positioning.
Classroom/lab demonstrations of UART control, stepper drive sequencing, and HMI using 8051 and LCD.
Prototype platform for pan/pointing mechanisms in robotics and communication projects.
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.
Assembled dimensions (est.): 18 × 12 × 6 cm, sized to accommodate a compact 8051 board, 16x2 LCD module (80 × 36 mm), and stepper/driver mounting with wiring clearances.
Shipping dimensions (cm)
Box size (est.): 24 × 18 × 8 cm, based on a typical components kit package footprint of ~22 × 15 × 5 cm plus development board, LCD, motor/driver, and adapter space.
Weight
Net weight (est.): ~0.6–0.8 kg, derived from a ~150 g components kit plus dev board, LCD, motor/driver, HC‑05, adapter, hardware, and wiring mass.
Shipping weight (est.): ~0.9 kg including protective packing, cabling, and carton
Notes: All the products are made by LearnElectronics India and not for re-sale.
Android Antenna Positioning System
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