mggates39 / etch-a-sketch

Electronic etch-a-sketch with Aruino Nano Every, a couple of rotary encoders and an OLED dusokay screen

Etch-A-Sketch

An electronic etch-a-sketch

Description

First cut is to just get the rotary enoder working. Then add a second encoder. Finally add support for a screen. In this case, it will be a 128x64 OLED that I already have.

Got the initial wiring working and I noticed some inconsistencies with the data. Reading on the forums, I found a fully interupt driven sample and tried it.

Now to add a second rotary encoder and make it display a graph right underneath the first one in the serial console.

Adding the OLED 128x64 screen using the built in I2C interface.

I needed to tweak the handling of the values from the encoders to allow me to invert the screen coordinates so when I view it upside down it works properly

Parts

• 1 Arduino Nano Every
• 2 CTY1052 Rotary Encoder
• 1 SSD1306 0.96" OLED screen w/I2C 128x64
• 1 Breadboard
• Assorted Jumper wires

Libraries

• SPI
• Wire
• Adafruit_GFX
• Adafruit_SSD1306

Wiring

Wire the first rotary encoder to the Arduino

Enc Pin	Usage	Arduino Pin
GND	Ground	GND
+	5 Volts	5v
SW	shaft push	D4
DT	B closure	D3
CLK	A closure	D2

Wire the second rotary encoder to the Arduino

Enc Pin	Usage	Arduino Pin
GND	Ground	GND
+	5 Volts	5v
SW	shaft push	D7
DT	B closure	D6
CLK	A closure	D5

Wire the OLED Display to the Arduino

I2C Pin	Usage	Arduino Pin
Vcc	3.3 volts	3.3V
GND	Ground	GND
SCL	Serial Clock	SCL - A5
SDA	Serial Data	SDA - A4

References

• Initial Rotary Encoder code came from Turtorial of Rotary Encoder with Arduino

• Discussion of missing data from rotary encoder Aduino Forums

• Adafruit display libraries can be found in the IDE Library Manager