16 open source boards using the 74LS688
Real designs built with the 74LS688, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Z80VDP1B
lynchaj
100 × 100 mm93 parts2LNo license31
Z80VDP1A
100 × 100 mm90 parts2LNo license31
RC202-68000 SIO 1
MarkD833
101.6 × 53.3 mm40 parts4LCC-BY-NC-4.08
Z80DUART2
100 × 100 mm70 parts2LNo license31
Z80PRINT
100 × 100 mm66 parts2LNo license31
68000 LBE Board
101.6 × 53.3 mm34 parts4LCC-BY-NC-4.08
Z80PSG1
100 × 100 mm64 parts2LNo license31
68000 SIO BOARD
101.6 × 53.3 mm33 parts4LCC-BY-NC-4.08
Z80VDC
100 × 100 mm63 parts2LNo license31
Z80SERIAL3
100 × 100 mm61 parts2LNo license31
AVR/ArduinoZ80DMA2
100 × 100 mm59 parts2LNo license31
68000 MPF BOARD
101.6 × 53.3 mm27 parts4LCC-BY-NC-4.08
Z80SERIAL2
100 × 100 mm59 parts2LNo license31
RC203-68000 PIO 1
101.6 × 53.3 mm24 parts4LCC-BY-NC-4.08
68000 PIO BOARD
101.6 × 53.3 mm23 parts4LCC-BY-NC-4.08
Z80RAM3
100 × 100 mm58 parts2LNo license31
The 74LS688 in open source designs
The gallery holds 16 open source boards using the 74LS688 from 2 GitHub repositories; a typical one measures about 100 × 100 mm and carries around 59 components.
63% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is Z80VDP1B by lynchaj.
Parts used alongside the 74LS688
Microcontrollers on boards using the 74LS688
What boards using the 74LS688 are built for
74LS688: common questions
Where can I find a 74LS688 reference design?
Each of the 16 boards on this page is a real design using the 74LS688. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the 74LS688 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 74LS688?
The median is 100 × 100 mm, and 63% are two-layer designs.
What is the most popular open source board using the 74LS688?
By GitHub stars, Z80VDP1B by lynchaj, with 31 stars.
Can I simulate one of these boards using the 74LS688 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.