From b2405dad581ad58ffea7e90a9e7cdcfd751e657b Mon Sep 17 00:00:00 2001 From: mahjongg2 Date: Sat, 29 Oct 2022 17:56:56 +0200 Subject: [PATCH] Update README.md --- README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/README.md b/README.md index f72fd02..86f4feb 100644 --- a/README.md +++ b/README.md @@ -77,6 +77,7 @@ On October 6, 2022 I uploaded a new BOM, some small errors were repaired, the 74 You can watch a youtube explaining the build of the ZX81+38 here: https://www.youtube.com/watch?v=6a8wxj9vJjU it explains ordering the PCB's assembling the PCB's programming the ROM, and testing the computer. +Note that for a cost analysis you often have to give the dimensions of the PCB, it is 142mm wide and 100mm high. for the keyboard PCB it is 158mm wide and 64mm high. But don't worry these dimensions are only used for a price assemment, the actual dimensions of the PCB's are derived from the gerber files. The main PCB is a two layer one, but the keyboard in priciple is only one layer, but if one layer PCB's are not supported choose two layers, the manufacturor will only actually create the top layer. # KEYBOARD PCB