From 16f7349fa872ef05020719013afe0a4224787500 Mon Sep 17 00:00:00 2001 From: Kattni Date: Mon, 19 Oct 2020 11:13:05 -0400 Subject: [PATCH] Add STEMMA version. --- README.md | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 4610065..50f8040 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,8 @@ # PCB for the Adafruit 128x64 I2C/SPI 1.3" OLED breakout board -
Click here to purchase one from the Adafruit shop +
+
+ Click here to purchase one from the Adafruit shop __Format is EagleCAD schematic and board layout__ @@ -8,6 +10,8 @@ These displays are small, only about 1.3" diagonal, but very readable due to the The driver chip, SSD1306 can communicate in two ways: I2C or SPI. The OLED itself require a 3.3V power supply and 3.3V logic levels for communication, but we include a 3.3V regulator and all pins are fully level shifted so you can use with 5V devices! +We've updated the design to add auto-reset circuitry so that the reset pin is optional. The default interface is now I2C not SPI - since it speaks I2C you can easily connect it up with just two wires (plus power and ground!). We've even included SparkFun qwiic compatible STEMMA QT connectors for the I2C bus so you don't even need to solder! + The power requirements depend a little on how much of the display is lit but on average the display uses about 40mA from the 3.3V supply. Built into the OLED driver is a simple switch-cap charge pump that turns 3.3v-5v into a high voltage drive for the OLEDs. [We have a detailed tutorial and example code in the form of an Arduino library](http://learn.adafruit.com/monochrome-oled-breakouts) for text and graphics. You'll need a microcontroller with more than 1K of RAM since the display must be buffered. The library can print text, bitmaps, pixels, rectangles, circles and lines. It uses 1K of RAM since it needs to buffer the entire display but its very fast! The code is simple to adapt to any other microcontroller.