Jens Nickel
About the article

XMEGA Web Server Board

Display, SD card, Ethernet, RS-485, buttons and LEDs

XMEGA Web Server Board
The microcontroller board described here is particularly well suited to monitoring and control applications. The plug-in TCP/IP module allows you to implement a web server and other network-oriented applications and a microSD card provides mass storage. Four LEDs, four buttons, and a removable display provide the user interface options. And of course the board comes with a wide range of external interfaces.
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Relevant websites
Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD 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.

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
All SMD, 0805
R1 = 1.6kOhm
R2 =100Ohm
R3,R21–R31= 10kOhm
R4,R7,R8,R10 = 1Ohm
R5 = 1.2kOhm
R6,R15 = 3.6kOhm
R9,R12,R16,R17,R19 = 680Ohm
R11,R18 = 680Ohm (optional)
R13 = 120Ohm
R14 = 2.2kOhm
R20 = 5.6kOhm
C1 = 220pF (0805)
C2,C4,C7,C9–C15,C17,C18,C19,C21–C29 = 100nF (0805)
C3,C6 = 47µF 10V tantalum (SMD-D/E)
C5,C30 = 10µF 16V tantalum (SMD-C)
C8 = 150pF (0805)
C16,C20 = 22pF (optional)
L1,L2 =470µH (Ferrite, PIS4728)
L3 = 10µH (LQH3C)
D1,D4–D8 = LED, type LG T67K (PLCC2)
D2,D3 = MBRS140
IC1,IC2 = MC34063A (SO8)
IC3 = LT1785CS8 (SO8)
IC4,IC6 = TXB0106 (TSSOP16)
IC5 = ATXmega256A3-AU (TQFP64)
JP1,JP2 = 2-pin pinheader, 0.1’’ pitch, with jumper
JP3,JP4 = 3-pin pinheader, 0.1’’ pitch, with jumper
K1 = 6-pin pinheader (2x3), 0.1’’ pitch
K2 = 2.5-mm-jack socket, solder mounting
K5 = 4-way PCB screw terminal block, 0.2’’ pitch, solder mounting
K8 = 12-pin pinheader, 0.1’’ pitch
K9 = 8-way mini-DIN socket (optional)
K12 = 2 pcs 6-way socket, 0.1’’ pitch for Wiz820io module
K15 = 14-pin pinheader, (2x7), 0.1’’ pitch
K16 = 6-pin pinheader, 0.1’’ pitch, for Elektor ‘BOB’ USB/TTL converter (optional)
K17 = hinge socket for microSD card
K18 = 6-pin pinheader, 0.1’’ pitch, for FTDI USB/TTL cable (optional)
Q1 = 16MHz quart crystal (optional)
S1,S2,S3,S4,S5 = SMD short-action pushbutton
PCB # 120126-1
Elektor # 120126-91 Controller Board, ready assembled and tested
Display Module
(SMD, 0805)
R1,R2,R4 = 27Ohm
R3 = 0Ohm
R5 = 0Ohm (optional)
C1 = 10µF 16V tantalum (SMD-C)
C2–C5 = 100nF (0805)
DISPLAY1 = Display EA-DOG-M163X-A with LED backlight LED55X31
20-way SIL receptacle 0.1’’ pitch + 2 pcs 2-way, for mounting DISPLAY1
K1 = 12-pin pinheader, 0.1’’ pitch
K2 = 12-pin pinheader, 0.1’’ pitch (optional)
K3,K4 = 8-pin pinheader, 0.1’’ pitch
S1,S2,S3,S4 = short-action pushbutton
PCB, Elektor #120126-2
Elektor # 120126-92 Display Module, ready assembled and tested

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