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USB Data Logger

Store serial data conveniently, safely

USB Data Logger
This neat design allows you to use a standard USB memory stick to store data in a microcontroller based system. Memory sticks provide a large volume of low cost, portable, non-volatile memory space. For this application the memory stick simply plugs into the data logger system which acts as a host USB controller and has the ability to log or store all serial data sent to it.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Extra info, Update


* USB 2.0 compatible
* Supports data rate up to 12 Mbit/s
* Connection to the host: +5 V, GND, ?C-Tx
* A file stored on the memory stick configures the UART
* Open-Source firmware
* Power consumption: +5 V, 50 to 80 mA


Additional Information

The link speed command in the config.txt file should be formatted like:


Download the BOM list
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.

R1 = 1kOhm
R2,R4,R5,R6 = 220Ohm
R3 = 5.6kOhm
C1,C2,C7,C8,C9 = 100nF
C3,C6 = 4.7?F 35V radial
C4,C5 = 22pF
D1 = LED, low-current, 3 mm
IC1 = PIC24FJ64GB002-I/SP (programmed, Elektor # 110409-41)
IC2 = LP2950-33LPE3
F1 = resettable fuse, 250 mA hold current, 500 mA trip current (Littlefuse 72R025XPR)
X1 = 12MHz quartz crystal
K1 = USB socket, Type A, PCB mount
K2 = 10-pin (2x5) pinheader, right angled
K3 = 6-pin pinheader
PCB # 110409-1

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