Monochrome 128x32 SPI OLED graphic display
These displays are small, only about 1" diagonal, but very readable due
to the high contrast of an OLED display. This display is made of 128x32
individual white OLED pixels, each one is turned on or off by the
controller chip. Because the display makes its own light, no backlight
is required. This reduces the power required to run the OLED and is why
the display has such high contrast; we really like this miniature
display for its crispness!
The driver chip SSD1306, communicates via SPI only. 4 or 5 pins are required to communicate with the chip in the OLED display.
OLED and driver require a 3.3V power supply and 3.3V logic levels for
communication. To make it easier for our customers to use, we've added a
3.3v regulator and level shifter on board! This makes it compatible
with any 5V microcontroller, such as the Arduino.
requirements depend a little on how much of the display is lit but on
average the display uses about 20mA 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, making it one of the easiest ways to
get an OLED into your project!
Of course, we wouldn't leave you
with a datasheet and a "good luck": We have a detailed tutorial and
example code in the form of an Arduino library for text and graphics.
You'll need a microcontroller with more than 512 bytes of RAM since the
display must be buffered.
You can download our SSD1306 OLED
display Arduino library from github which comes with example code. The
library can print text, bitmaps, pixels, rectangles, circles and lines.
It uses 512 bytes of RAM since it needs to buffer the entire display but
its very fast! The code is simple to adapt to any other
PCB: 23mm x 33mm x 5mm / 0.9" x 1.3" x 0.2"
Mounting Holes Distance: 15mm x 24mm / 0.6" x 0.9"
Mounting Hole Diameter: 2mm / 0.08"
Display area: 7mm x 25mm
- Diagonal Screen Size：0.91"
- Number of Pixels：128 × 32
- Color Depth：Monochrome (White)
- Module Construction：COG
- Module Size (mm)：46.30× 11.50 × 1.45
- Panel Size (mm)：30.00 × 11.50 × 1.45
- Active Area (mm)：22.384 × 5.584
- Pixel Pitch (mm)：0.175 × 0.175
- Pixel Size (mm)：0.159 × 0.159
- Brightness ( cd/m2)：150 (Typ) @ 7.25V
- Interface：4-wire SPI
- Display current draw is completely dependent on your usage: each OLED
LED draws current when on so the more pixels you have lit, the more
current is used. They tend to draw ~15mA or so in practice but for
precise numbers you must measure the current in your usage circuit.
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