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UART/RS-232S Data Logger

Multi-level monitoring of serial streams

Based on a Labs project | January 2014 | Find it here
UART/RS-232S Data Logger
Our UART data logger registers bytes in both directions with millisecond accuracy. And its flexible connection options and electrical isolation enable it to be hooked up without difficulty into serial data connections employing TTL or RS-232 levels.
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Extra info / Update
* Two serial inputs for bidirectional connections
* Inputs can have separate grounds
* Data transmission to PC via USB
* Operating power derived via USB
* User interface via commands from Terminal Program
* Baud rates up to 230 KBd
* Stores up to 900 data sets
* Data logging for up to 2:20 (h:mm)
* Temporal resolution 1 ms
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.
Component list
Component List
Default: 5%, .125W, SMD 0805)
R1,R2 = 68Ohm 1%
R3,R5 = 270Ohm
R4,R6 = 100Ohm
R7,R8 = 220Ohm
R9,R10,R11 = 330Ohm
R12 = 10kOhm
R13 = 33kOhm
R14 = 56kOhm
R15 = 680Ohm
Default: 10%, 50V, SMD 0805
C1–C6,C10 = 100nF, X7R
C7,C8 = 22pF, C0G/NP0
C9 = 4.7µF 20V, tantalum, SMD A
C11 = 10µF 10V, tantalum, SMD A
L1,L2 = 330Ohm @ 100MHz, 0.08Ohm, 1.7A, SMD 0603
D1,D2 = TS4148 RY
D3,D4,D5 = LED, yellow (SMD 0805)
D7 = LED, green (SMD 0805)
T1,T2 = BF545A (SMD SOT23)
IC1,IC2 = 6N137 (DIP8)
IC3 = ATxmega128A4U-AU, programmed, Elektor Store # 140126-41 [3]
K1,K2 = 2-way PCB screw terminal block, 0.2” pitch
K3 = 10-pin (2x5) pinheader, 0.1” pitch
K4 = 4-pin pinheader, 0.1” pitch
K5 = Micro USB connector, Type B, SMD
K1 = 6-way (2x3) boxheader, 0.1” pitch
JP1,JP2,JP3 = 2-pin pinheader, 0.1” pitch
JP4 = 3-pin pinheader, 0.1” pitch
JP1–JP4 = jumper, 0.1” pitch
PC1–PC4 = solder pin 1.3mm
X1 = 12MHz quartz crystal, CL=18pF, SMD, 5x3.2mm, e.g. Abracon ABM3-12.000MHZ-D2Y-T
PCB # 140126-1 v1.0 [3]
Ready assembled module, Elektor Store # 140126-91 [3]

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