HardLabs

7seg16bit

hotkeysoft·7seg16bit-kicad

7seg16bit PCB layout, top view — open source AVR/Arduino board by hotkeysoft

About the 7seg16bit PCB

7seg16bit is an open source AVR/Arduino PCB design by hotkeysoft, published on GitHub under the MIT license. It is a 2-layer board measuring 62.9 × 22.9 mm, with 22 components from 15 distinct parts.

Its main chip is the ATmega8535-16AU, from the AVR/Arduino family. Other key parts include the LTD-2601G. By type, the board carries 7 connectors, 4 ICs, 4 capacitors, 4 resistors, 2 jumpers and 1 diode.

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

From the project

Six-digit seven-segment indicator for 16 bit values with signed/unsigned/hex + latch modes

- ATmega8535 microcontroller running at 8MHz (internal clock) - 3x2 digit 7-segment display - Configurable modes via jumpers: - Decimal / HEX mode - Signed Decimal (-32768-32767) - Unsigned Decimal (0-65535) - Hexadecimal (0-FFFF) - Latch mode - Latch value on L->H transition - Latch value on H->L transition - Unlatched (live display)

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

7seg16bit, from the project README
From the project README

Main components on the 7seg16bit

LTD-2601GATmega8535-16AU

7seg16bit bill of materials (BOM)

22 components, 15 distinct parts.

QtyPartRefs
3
LTD-2601G
U1, U3, U4
1
ATmega8535-16AU
U2
1
RESET
J1
1
IN_UP
J2
1
VCC
J3
1
IN_DOWN
J4
1
GND
J5
2
LATCH
J6, J7
1
LATCH MODE
JP1
1
BIN/DEC
JP2
1
MBR0520LT
D1
4
0.1uF
C1, C2, C3, C4
1
4.7k
R3
2
330
RN1, RN2
1
10K
RN3

7seg16bit design files

The KiCad project lives in the hotkeysoft/7seg16bit-kicad repository on GitHub; these links point at the commit this page was built from.

7seg16bit: common questions

What microcontroller does the 7seg16bit use?

The 7seg16bit is built around the ATmega8535-16AU, from the AVR/Arduino family.

How big is the 7seg16bit PCB?

The 7seg16bit measures 62.9 × 22.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 7seg16bit?

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

Where can I download the 7seg16bit design files?

From the hotkeysoft/7seg16bit-kicad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 7seg16bit 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 7seg16bit 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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