matrixdisplay

Parts:

• 64x32 LED Matrix (i got this one of amazon)
• ESP8266 (V3 LoLin, NodeMCU v0.9)
• ESP8266 Development Board (makes it easier to use one power supply for the board and the led matrix)
• Power Supply (mine provided 12V - 4A)
• Jumper Cables (female-to-female)

Cabling:

LED Matrix Model: P4-256*128-2121-A2

Pin Layout:

Left	Right
R1	G1
B1	GND
R2	G2
B2	GND
A	B
C	D
CLK	LAT
P_OE	GND

PI --> PO

PI	PO
R2	R1
G1	R2
G2	G1
B1	G2
B2	B1

PI --> ESP8266

PI	ESP8266
LAT	D0
A	D1
B	D2
C	D8
D	D6
P_OE	D4
CLK	D5
R1	D7

Software:

Setup Arduino

1. rename secrets.cpp.template to secrets.cpp
2. enter your wifi information
3. setup all relevant Arduino Libraries
4. upload files to ESP8266
5. upload the website via the Arduino IDE

Setup Website Development

1. run yarn
2. run yarn watch for local development
3. run yarn build to minify and gzip the html file
4. upload the website via the Arduino IDE

Libraries

Arduino Library Manager

• PxMatrix (by Dominic Buchstaller)
• ArduinoJson (by Benoit Blanchon)
• Adafruit GFX Library (by Adafruit)
• NTPClient (by Fabrice Weinberg)

External

• WebSocketsServer (by arduinoWebSockets)
  • install manually to <home_dir>/Documents/Arduino/libraries/

File System

• setup ESP8266 Sketch Data Upload docs

  • extract ESP8266FS to <home_dir>/Documents/Arduino/tools/
  • reload Arduino IDE
  • create a data folder
  • select Tools > ESP8266 Sketch Data Upload