A learning kit to get acquainted with embedded microprocessor hardware design and programming concepts which will go through the elements needed to build a compact and versatile low-power datalogger:

• Data logger base pcb with Freescale MC9S08LG32 microprocessor
• LCD glass with 7 alpha-numeric characters + 4 digits
• MicroSD flash card adapter for datalogging ( 2GB flash memory card included)
• solar photovoltaique cell enables the device to operate indefinitely without changing batteries
• miniature joystick and capactive touch sensor numeric keypad for input with MPR121 controller
• tutorial includes C code for SD-card access with a PC-compatible FAT file system, LCD display, keypad and the major processor modules
• JM60-OSBDM programmer included for debugging and programming
• TTL-level serial port can be brought to USB with a small dongle adapter for live transmission of data to a PC
• runs on three AA cells (use rechargable AA batteries with the solar panel).

The LG32 microprocessor has a built-in LCD driver that makes it possible to use driver-less LCD glass modules.
This results in a very low power consumption of only 12-14 µA in stop3 mode, even with the display active all the time.
In a typical datalogger application, the microprocessor will wake up briefly every few seconds to measure and record the inputs and then return to a low-power mode, thus allowing it operate for a year on a single set of batteries.
With the solar panel and rechargable AA-cells, it can operate indefinitely.
The charge current of the solar cell is measured with circuitry included on the pcb, so that the datalogger can continuously record the available solar energy for determining the viability of potential solar energy sites, with the data being recorded on the MicroSD memory card over extended periods for later analysis.
RJ45 socket connected to a capture timer can monitor a wind sensor such as the TX23 from LaCrosse for anemometer applications (wind sensor needs to be purchased directly from one of their resellers).
The MC9S08LG processor can operate on 2.7 to 5.5V, but SD flash cards only work with 3.3V, therefore a 3.3V regulator is used on the board.
There is also circuitry to switch off power to the SD card when it's not being accessed.

The hardware is already available separately, the tutorial kit is in preparation.

At end of the process, the user is left with a fully functional datalogger: