Altair-Duino Schematics Chris DavisMay 12, 2022Other Click to download: Altair-Duino Schematic version 1.5.2 Pro I/O Board Schematic version 1.3 Standard I/O Board Schematic version 1.0 Altair-Duino Schematic version 2.0.4+ Pro I/O Board Schematic version 2.0.4+