I picked up this board while prototyping a datalogger a few years back.  I ended up using a MSP430 instead.  I don't even remember if I even flashed anything to this board!

Has slot for microSD card and a nice processor, see:

Version 1.5 from MicroChip Direct

• PIC32MX795F512H - 512K Flash, 128K RAM @ 80MHz 32-bit MIPS core
• MPIDE (MultiPlatform IDE - a fork of the Arduino IDE) supports Fubarino SD board out of the box
• 45 Digital IO (many are 5V tolerant)
• 15 Analog inputs (10-bit)
• 2 hardware serial ports (UARTs) - one accessible on pins 28 (rx) and 29 (tx), the other on pins 8 and 9, plus a serial connection over USB (12Mbps)
• Comes with headers for easy mounting on a breadboard
• Directly compatible with 3.3V devices. No level converting necessary.
• Small form factor - easy to integrate into your project
• Great for projects that need two hardware serial ports plus a USB connection and file storage
• Easy to program, no additional hardware is required to load sketches – just plug into a USB port and run MPIDE
• Can be used as USB to microSD adapter
• ICSP Header for use with optional Microchip hardware programmer/debuggers (like PICKit3, ICD3 or REAL ICE)
• Can be powered through USB, or 2.3V to 13V DC input power
• Extra power and ground pins for ease of wiring into your project
• microSD slot connected to the PIC32 hardware SPI port
• microSD card accessible for large file access from your sketches
• USB bootloader (avrdude compatible) for seemless sketch uploading within MPIDE