13 channel Data Logger with clock

The need of a better datalogger than my first creation, made me create a 13 channel SD-card logger with TFT display.

		A while back, I needed to create a unit for logging data. After searching the Internet I found a way to control a SD Card with a PIC MCU. SD Cards use 3V3 so I used a PIC18LF13K50 to control it. The measured values where written to the SD-card in a raw way, filling the sectors directly. The only way to get a view of the data was to read it in a PC with a serial link. This transfer could take up to 3 hours and was to long.

My next data logger is based on a PIC18F4620 controlling a TFT display and has FAT firmware for SD-card writes. Also, a digital clock module is installed. The casing is completely printed on 3DDIE.

   

The number of channels, the measuring delay, a start trigger and the time stamps are completely configurable by a menu.

All inputs can work at different voltages, set by jumpers.

Because of the FAT firmware, the files written with the measured data, is easaly read in any SD-card reader by a PC or laptop.
I wrote a small VB6 application for making the data viewable. The window is resizable.

Each file sector has a time stamp. This is shown above the data