HardLabs

Mod emup usb

sharpdad·mod-emup-usb·hardware/emup_adapter.kicad_pcb

Mod emup usb PCB layout, top view — open source AVR/Arduino board by sharpdad

About the Mod emup usb PCB

Mod emup usb is an open source AVR/Arduino PCB design by sharpdad, published on GitHub under the MIT license. It is a 2-layer board measuring 120 × 80 mm, with 18 components from 14 distinct parts.

Its main chip is the Arduino Nano (5 V), from the AVR/Arduino family. Other key parts include the RECOM R-78B5.0-2.0, TRACO TMR 1-1211 (-12 V: +out to GND), 74HCT245 and 74HCT244. By type, the board carries 5 capacitors, 5 resistors, 4 ICs, 2 diodes, 1 module and 1 connector.

From the project

emupadapter.py describes the board (parts, nets, placement); ./build.sh turns it into the KiCad schematic (emupadapter.kicadsch, .pdf), a routed PCB (emupadapter.kicadpcb), DRC / ERC reports and fab files (fab/`: Gerber + drill zip, BOM). The KiCad files open and edit normally in

emupadapter.py describes the board (parts, nets, placement); ./build.sh turns it into the KiCad schematic (emupadapter.kicadsch, .pdf), a routed PCB (emupadapter.kicadpcb), DRC / ERC reports and fab files (fab/`: Gerber + drill zip, BOM). The KiCad files open and edit normally in KiCad 8; if you edit the board by hand, don't re-run build.sh.

Power: one 12 V DC supply (2.1 mm barrel, centre positive, 2 A) through a 1N5822. +12 V goes to the box as is; +5 V (2 A) comes from a RECOM R-78B5.0-2.0 (7805-footprint switching module); -12 V from a TRACO TMR 1-1211 isolated module with its +output…

Main components on the Mod emup usb

RECOM R-78B5.0-2.0TRACO TMR 1-1211 (-12 V: +out to GND)74HCT24574HCT244Arduino Nano (5 V)

Mod emup usb bill of materials (BOM)

18 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RECOM R-78B5.0-2.0
U1
1
TRACO TMR 1-1211 (-12 V: +out to GND)
U2
1
74HCT245
U3
1
74HCT244
U4
1
Arduino Nano (5 V)
A1
1
12 V DC in (2.1 mm, centre +)
J1
1
1N5822 (reverse protection)
D1
1
LED (+5 V on)
D2
1
100u 25V
C1
1
220u 10V
C2
1
47u 25V
C3
2
100N
100n
C4, C5
4
10K
10k
R1, R2, R3, R4
1
1k
R5

Mod emup usb design files

The KiCad project lives in the sharpdad/mod-emup-usb repository on GitHub; these links point at the commit this page was built from.

Mod emup usb: common questions

What microcontroller does the Mod emup usb use?

The Mod emup usb is built around the Arduino Nano (5 V), from the AVR/Arduino family.

How big is the Mod emup usb PCB?

The Mod emup usb measures 120 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mod emup usb?

18 components, from 14 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 Mod emup usb design files?

From the sharpdad/mod-emup-usb repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Mod emup usb design in my own project?

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

Can I test firmware for the Mod emup usb 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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