matt_64's blog

This is an MP3 schematic I've created. See the attached PDF.

It includes the following features:

- USB
- SD Card
- Hard Disk
- VS1053B mp3 decoder (with line in, line out & microphone).
- 23k256 for extra ram (used by FAT32 lib), not required.
- 74HC08 to allow for additional SPI devices.
- Serial port
- LCD (Not yet connected). May have run out of pins.

The schematic needs to be tested for errors.

Circuit for H-Bridge Motor Speed Controller for PIC microcontroller.

18f4620_motor_hbridge.jal

Note: I have not tested with the Schottky diodes. I have ordered them. I may blow my FETs with feedback voltage spikes from the motor.