Microchip microcontroller users is quite a useful experiment to work you need a Pic18f452 development Board this way, small-sized double-sided printed circuit board drawing a lot of property has been added … max232 rs232 connection, boot loader, 24c256 eeprom, LEDs, buttons, he16m, lcd, DS1307, etc. also boot loader program code (Pic Basic Pro included) have the schema files, pcb drawings.
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Published: 2012/05/16 Tags: pic development board
dsPIC30F2020 LED Psychedelic TC4427A MCP608 MCP6022 MCP6S26
The project requirements are related to technologies adopted: high power LEDs need to be driven with a constant current; digital filters need a fast DSP engine, to be implemented, and an A/D converter is required to transform an audio signal in a numerical representation. Control data communications between central processing unit and external analog components require to have an SPI on board and, last but not least, the capability to link the system with a PC could be very useful for firmware debugging and for tuning some parameters in real time without needing expensive developing tools.
The dsPIC30F2020 perfect matches all these needs having a very powerful 4 channels independent PWM generator with current fail detection suitable for drive 3 LEDs in a buck booster configuration through two MOSFET drivers TC4427A a built-in 2Msps A/D converter and a DSP core featuring 17×17 bit multiplications for filters implementation; an SPI hardware for in-system communications; an RS232 compatible block useful for communications with an external PC.