From e4e4f4f1043b54068ab8e06883bf925680626d46 Mon Sep 17 00:00:00 2001 From: workinghard Date: Mon, 17 Oct 2016 20:58:53 -0700 Subject: [PATCH] Update README.md --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 8d5de8c..c791a5f 100644 --- a/README.md +++ b/README.md @@ -38,7 +38,7 @@ The communication is working through I2C protocoll. The basic logic is very simp | End key | 69:","
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72:" " | ## Hardware -Because most of the esp8266 boards are working with 3.3V and our Cube board is a regular ATMEGA328 with 5V, we need a voltage shifter. This is a basic schematic realized with a BSS138 MOSFET. Breakout boards are available on most popular sites. +Because most of the esp8266 boards are working with 3.3V and our Cube board is a regular ATMEGA328 with 5V, we need a voltage shifter. This is a basic schematic realized with a BSS138 MOSFET. Breakout boards are available on most popular sites. There are also esp8266 boards with 5V logic shifter already on board. In that case, you don't need this schematic. Just connect SDA and SCL. ![alt_text][schematic1]