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Dual mentor

F6ITU·Mentor

Dual mentor PCB layout, top view — open source AVR/Arduino board by F6ITU
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About the Dual mentor PCB

Dual mentor is an open source AVR/Arduino PCB design by F6ITU, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 48 components from 29 distinct parts.

Its main chip is the Arduino_Nano, from the AVR/Arduino family. Other key parts include the KA78M05_TO252. By type, the board carries 17 resistors, 8 connectors, 6 inductors, 6 capacitors, 3 transistors and 2 ICs.

It belongs with the displays & leds, rf & radio and retro computing designs in this gallery.

From the project

An Arduino base display controler for OpenHPSDR/Hermes familly (8000 DLE retrofit)

An Arduino based SSPA display controler for HPSDR/Hermes familly This module controls - voltage - current - temperature - VSWR/PWR - cooling fan - 4x40 lcd display and shuts down the Bias current while beeping in case of dificulties

This board and the associated firmware have been developped by ON7EQ.

http://www.qsl.net/on7eq/projects/arduino_sspa.htm

Some code modifications have been made by John Melton for the Hermes familly.

Main components on the Dual mentor

KA78M05_TO252Arduino_Nano

Dual mentor bill of materials (BOM)

48 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
KA78M05_TO252
U1
1
Arduino_Nano
U2
2
PZT2222A
Q1, Q2
1
IRFR3303
Q3
2
CONN_01X02
J1, J5
1
CONN_01X06
J2
2
CONN_01X09
J3, J7
1
CONN_01X10
J4
1
CONN_01X03
J6
1
Conn_01x05
J8
1
Buzzer
BZ1
1
EC2-12NU
RL1
1
10k
RV1
2
2k
RV2, RV3
1
LED
D1
6
L_cap
L1, L2, L3, L4, L5, L6
5
100n
C1, C3, C4, C5, C6
1
10u
C2
2
10k
R1, R8
2
0R
R2, R3
Show 9 more
QtyPartRefs
1
330
R4
2
1k
R5, R6
1
2k2
R7
1
100R
R9
1
5k
R10
3
1k5
R11, R14, R15
1
3k3
R12
1
2k
R13
2
500R
R16, R17

Dual mentor design files

The KiCad project lives in the F6ITU/Mentor repository on GitHub; these links point at the commit this page was built from.

Dual mentor: common questions

What microcontroller does the Dual mentor use?

The Dual mentor is built around the Arduino_Nano, from the AVR/Arduino family.

How big is the Dual mentor PCB?

The Dual mentor measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Dual mentor?

48 components, from 29 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 Dual mentor design files?

From the F6ITU/Mentor repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Dual mentor design in my own project?

The repository has no license, so all rights stay with F6ITU. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Dual mentor 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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