HardLabs

Tuner

dl9lj·tuner·kicad/Tuner.kicad_pcb

Tuner PCB layout, top view — open source AVR/Arduino board by dl9lj
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About the Tuner PCB

Tuner is an open source AVR/Arduino PCB design by dl9lj, published on GitHub under the MIT license. It is a 2-layer board measuring 81 × 55 mm, with 26 components from 10 distinct parts.

Its main chip is the ATmega328PB-A, from the AVR/Arduino family. Other key parts include the MAX232 and 74HC595. By type, the board carries 11 capacitors, 6 connectors, 5 ICs and 4 resistors.

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

From the project

wireless remote control for different antenna tuners

Yaesu FC-1000 / FC-800 started with buying a Yaesu Automatic Antenna Tuner FC-1000 w/o control unit. I started with removing the existing controller and thought about to do a replacement with an atmega328p in combination with 3 HC595 shift register. Interface to a laptop pc via uart. I had this setup running (328p firmware in C). But after working with NRF24L01 modules I decided to do the interface wireless. 328p is no longer required but the 595 board can be used.The 3 HC595 are connected via wires and DSUB9 connector to an externel arduino with NRF24L01 module. I wrote a python script with…

Tuner, from the project README
From the project README

Main components on the Tuner

ATmega328PB-AMAX23274HC595

Tuner bill of materials (BOM)

26 components, 10 distinct parts.

QtyPartRefs
1
ATmega328PB-A
U1
1
MAX232
U2
3
74HC595
U3, U4, U5
1
3pin
J1
1
4pin
J2
1
40pin
J3
2
2pin
J4, J6
1
2x3pin
J5
11
100n
C1, C2, C3, C4, C5, C6, C7, C8 +3
4
10k
R1, R2, R7, R8

Tuner design files

The KiCad project lives in the dl9lj/tuner repository on GitHub; these links point at the commit this page was built from.

Tuner: common questions

What microcontroller does the Tuner use?

The Tuner is built around the ATmega328PB-A, from the AVR/Arduino family.

How big is the Tuner PCB?

The Tuner measures 81 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tuner?

26 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tuner design files?

From the dl9lj/tuner repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tuner design in my own project?

Yes, under the terms of its MIT license, which dl9lj chose for the repository.

Can I test firmware for the Tuner 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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