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Close-up of the assembled P161002 board with Microchip devices in SMD packages Board visualisation with an STM32 microcontroller, SD card socket and GPS module Three-dimensional visualisation of a board with a relay, buzzer and connectors Part of a schematic with an INA326 instrumentation amplifier and MCP3304 A/D converter Three-dimensional visualisation of a densely populated communication module board Device front panel with labelled buttons, volume knobs and a speaker Technical drawing of the front panel showing the layout of buttons and knobs Assembled board with a PIC18F2550 microcontroller, USB socket and trimmer potentiometers TouchGFX interface source code for STM32 in the Visual Studio Code editor Printed circuit board layout with copper layers and component placement
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RFID system

The RFID system module board has a built-in UNIQUE 125 kHz detector. It also carries a real time clock, EEPROM memory, a microSD card socket, a three-axis accelerometer and a BlueTooth communication module. In addition it has a controlled converter generating the 6 V needed to supply a servo. There is a connector on the board for attaching one servo. Besides these functional blocks the board also holds a rechargeable battery and a charge control circuit.

RFID module board with the UNIQUE 125 kHz detector

Fig. The RFID system module board.

A Microchip PIC18 family controller is used in the module.

Block diagram of the RFID system

Fig. Block diagram of the RFID circuit.

Visualisation of the RFID module printed circuit board

Fig. Visualisation of the board.


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