From 9515c49810f3b686c7e5a48aa2706a587423cfb9 Mon Sep 17 00:00:00 2001 From: Andrew McPherson Date: Mon, 6 Apr 2020 02:11:45 +0100 Subject: [PATCH] Added README for VGA adapter --- hardware/VGA_adapter/README.md | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 hardware/VGA_adapter/README.md diff --git a/hardware/VGA_adapter/README.md b/hardware/VGA_adapter/README.md new file mode 100644 index 0000000..90281c4 --- /dev/null +++ b/hardware/VGA_adapter/README.md @@ -0,0 +1,31 @@ +# VideoMacPac video adapter + +These design materials are in the public domain, with no warranty whatsoever. See `documentation` on this repository for further design notes and `photos` for a photo of the assembled board. + +## EAGLE files + +* `VideoMacPac_adapter.sch`: EAGLE schematic +* `VideoMacPac_adapter.brd`: EAGLE PCB design +* `schematic.png`: image of the schematic + +## Gerbers + +This is a 2-layer PCB which can be fabricated from the files in the `gerbers` directory. It is a simple design which can be made on a mill with no soldermask as long as it has plated-through holes. The most important files are: + +* `copper_top.gbr`: top copper +* `copper_bottom.gbr`: bottom copper +* `profile.gbr`: board outline +* `drill_1_16.xln`: Excellon drill file + +## Bill of Materials + +| Name | Value | +| ------- | ------------------------------------- | +| C1-C2 | 0.1uF 0603 capacitors | +| IC1 | 74LVC245 (20-SOIC) bus transceiver | +| IC2 | MCP1700-3302T (SOT23) 3.3V regulator | +| J1 | DB25 female | +| J2 | HD15 (VGA) female | +| R1-R3 | 133 ohm 0603 resistors | +| R4-R6 | 150 ohm 0603 resistors | +| R7 | 100 ohm 0603 resistor (could use 150) | \ No newline at end of file