HardLabs

7seg8bit

hotkeysoft·7seg8bit-kicad

7seg8bit PCB layout, top view — open source AVR/Arduino board by hotkeysoft

About the 7seg8bit PCB

7seg8bit is an open source AVR/Arduino PCB design by hotkeysoft, published on GitHub under the MIT license. It is a 2-layer board measuring 43.9 × 19.8 mm, with 20 components from 15 distinct parts.

Its main chip is the ATmega328P-AU, from the AVR/Arduino family. Other key parts include the LTD-2601G. By type, the board carries 7 connectors, 4 resistors, 3 ICs, 3 capacitors, 2 jumpers and 1 diode.

It belongs with the displays & leds designs in this gallery.

From the project

Two/four-digit seven-segment indicator for 8 bit values with signed/unsigned/hex + latch modes

Note: This revision was produced and works

Images ============ |Front | Back | |------------------------------------------------------|---------------------------------------------------| |||

7seg8bit, from the project README
From the project README

Main components on the 7seg8bit

LTD-2601GATmega328P-AU

7seg8bit bill of materials (BOM)

20 components, 15 distinct parts.

QtyPartRefs
2
LTD-2601G
U1, U3
1
ATmega328P-AU
U2
1
VCC
J1
1
IN_UP
J2
1
GND
J3
1
IN_DOWN
J4
1
RESET
J5
2
LATCH
J6, J7
1
BIN/DEC
JP1
1
LATCH MODE
JP2
1
MBR0520LT
D1
3
0.1uF
C1, C2, C3
1
4.7k
R3
2
330
RN1, RN2
1
10K
RN3

7seg8bit design files

The KiCad project lives in the hotkeysoft/7seg8bit-kicad repository on GitHub; these links point at the commit this page was built from.

7seg8bit: common questions

What microcontroller does the 7seg8bit use?

The 7seg8bit is built around the ATmega328P-AU, from the AVR/Arduino family.

How big is the 7seg8bit PCB?

The 7seg8bit measures 43.9 × 19.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 7seg8bit?

20 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the 7seg8bit design files?

From the hotkeysoft/7seg8bit-kicad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 7seg8bit design in my own project?

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

Can I test firmware for the 7seg8bit 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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