From 3c0b589d87966de68f8af0f0e4fe07c4474e4a07 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?H=C3=A5kon=20L=C3=B8vdal?= Date: Sat, 27 Jan 2018 10:32:26 +0100 Subject: [PATCH] Add description of board 2 in electrical readme --- Electrical/README.md | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/Electrical/README.md b/Electrical/README.md index 7b4e7326..c749a85b 100644 --- a/Electrical/README.md +++ b/Electrical/README.md @@ -5,12 +5,26 @@ Here are links to the different board designs together with a short summary. ## Board 1 -This project currently contains only one [board design](Board_001). It +The project's original [board design](Board_001). It * is based on the ESP8266 chip. * is powered by USB. * uses a very simple voltage divider to demodulate the M-bus signal. +* has shematic and pcb design only available as finished pdf/png files. ### Status Prototypes have been made and some people have started using them(?). + +## Board 2 + +This [board design](Board_002) is a newer alternative to the original. It + +* is an Arduino shield. +* uses the industry standard TSS721 chip to interface the M-bus. +* is optically isolated. +* has shematic and pcb design available in editable [KiCad](http://www.kicad-pcb.org/) source files. + +### Status + +Unfinished, just started.