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ADX

WB2CBA·ADX·ADX KiCAD PCB FILES/ADX.kicad_pcb

ADX PCB layout, top view — open source AVR/Arduino board by WB2CBA

About the ADX PCB

ADX is an open source AVR/Arduino PCB design by WB2CBA, published on GitHub. It is a 2-layer board measuring 97.1 × 97 mm, with 68 components from 39 distinct parts.

Its main chip is the Arduino_Nano_Socket, from the AVR/Arduino family. Other key parts include the CD2003GB_GP, SI535X_Module, 74ACT244 and uSDX_LPF_BAND_MODULE. By type, the board carries 24 capacitors, 15 resistors, 9 diodes, 5 connectors, 4 ICs and 4 transistors.

It belongs with the rf & radio designs in this gallery.

From the project

ADX - Arduino Digital Modes HF Transceiver

ADX - Arduino Digital Modes Transceiver UPDATE (02 June 2025):

FOR CAT CONTROL try using KENWOOD TS-440S or KENWOOD TS-140S. HAMLIB in WSJTX has an error in CAT Control for TS-2000 in WSJTX V2.7 or later.It doesn't work. This has nothing to do with ADX CAT Control Routine. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ADX - Arduino Digital Modes Transceiver UPDATE (14 July 2023):

Main components on the ADX

CD2003GB_GPSI535X_Module74ACT244uSDX_LPF_BAND_MODULE

ADX bill of materials (BOM)

68 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CD2003GB_GP
U1
1
SI535X_Module
U2
1
74ACT244
U3
1
uSDX_LPF_BAND_MODULE
U4
3
BS170
Q1, Q2, Q3
1
BS170
Q4
1
SPK
CON1
1
MIC
CON2
1
SMA
J1
1
BNC
J1A1
1
PJ-102A
J2
1
—
CX1
1
UP(BAND)
SW1
1
DOWN(CAL)
SW2
1
TX
SW3
1
Arduino_Nano_Socket
XA1
1
TX
D1
1
FT8
D2
1
FT4
D3
1
JS8
D4
Show 19 more
QtyPartRefs
1
WSPR
D5
1
1N4148
D6
2
1N4148
D7, D8
1
1N5817
D9
1
1uH
L1
1
100uH
L2
3
100uF/16V
C1, C16, C24
13
100nF
C2, C3, C6, C8, C9, C10, C14, C15 +5
2
10nF
C4, C5
1
470nF
C7
1
620pF
C11
2
10nF
C12, C17
2
10uF/16V
C13, C18
1
1M
R1
1
4.7k
R2
5
10k
R3, R4, R10, R11, R15
6
1k
R5, R6, R7, R8, R9, R13
1
2.7k
R12
1
100
R14

ADX design files

The KiCad project lives in the WB2CBA/ADX repository on GitHub; these links point at the commit this page was built from.

ADX: common questions

What microcontroller does the ADX use?

The ADX is built around the Arduino_Nano_Socket, from the AVR/Arduino family.

How big is the ADX PCB?

The ADX measures 97.1 × 97 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ADX?

68 components, from 39 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ADX design files?

From the WB2CBA/ADX repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the ADX design in my own project?

The repository has no license, so all rights stay with WB2CBA. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ADX without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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