HardLabs

2-digit-Turbo-Display

wiretap-retro·2-digit-Turbo-Display·Turbo-Display-V2/Turbo-Display-V2.kicad_pcb

2-digit-Turbo-Display PCB layout, top view — open source AVR/Arduino board by wiretap-retro
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About the 2-digit-Turbo-Display PCB

2-digit-Turbo-Display is an open source AVR/Arduino PCB design by wiretap-retro, published on GitHub. It is a 2-layer board measuring 39.1 × 30 mm, with 15 components from 11 distinct parts.

Its main chip is the ATTINY85, from the AVR/Arduino family. Other key parts include the SN74HC595DR. By type, the board carries 4 resistors, 3 ICs, 3 connectors and 3 capacitors.

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

From the project

This project is a ATTiny85-based turbo display for retro PC's. It displays 2 digits.

2-digit-Turbo-Display, from the project README
From the project README

Main components on the 2-digit-Turbo-Display

ATTINY85SN74HC595DR

2-digit-Turbo-Display bill of materials (BOM)

15 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY85
ATtiny85
U1
2
SN74HC595DR
U2, U3
1
+5V
J1
1
TLED_IN
J2
1
TLED_OUT
J3
2
TDSG5150-N
DS1_LSB1, DS2_MSB1
2
0.1UF
0.1uF
C1, C2
1
0.1UF
0.1uF
C3
1
10K
10k
R1
1
470
R2
2
4816P-T01-471LF
RN1, RN2

2-digit-Turbo-Display design files

The KiCad project lives in the wiretap-retro/2-digit-Turbo-Display repository on GitHub; these links point at the commit this page was built from.

2-digit-Turbo-Display: common questions

What microcontroller does the 2-digit-Turbo-Display use?

The 2-digit-Turbo-Display is built around the ATTINY85, from the AVR/Arduino family.

How big is the 2-digit-Turbo-Display PCB?

The 2-digit-Turbo-Display measures 39.1 × 30 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 2-digit-Turbo-Display?

15 components, from 11 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 2-digit-Turbo-Display design files?

From the wiretap-retro/2-digit-Turbo-Display repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the 2-digit-Turbo-Display design in my own project?

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

Can I test firmware for the 2-digit-Turbo-Display 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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