Run OLED

details

Description:

I want to make the Smart watch.

but there are projects where I want to attach a small display for quickly figuring out the current state.

Step 1: Parts

  • WIZwiki-W7500
    • ARM Cortex-M0
    • Hardwired TCP/IP
  • Adafruit
    • OLED 128 x 64
    • I2C communication
  • Jumper line

WIZwiki-W7500

  • 32-bit ARM Cortex-M0
  • Flash : 128KB / SRAM : 16KB (up to 48KB)
  • Hardwired TCP/IP Core (Supports MII Interface)
  • Internal 8MHz Oscillator
  • External crystal Oscillator (8~24MHz)
  • 48MHz maximum frequency
  • PLL for internal clock source
  • ADC – 12bit, 8ch, 1Mbps
  • DMA – UART, SPI, Software
  • GPIO 53ea I/O
  • 4 Timer/ 8 PWM
  • 3 UART, 2 SPI, 2 I2C
  • 32bit RNG
  • Serial Wire Debug(SWD)
  • Package: 64TQFP (7×7 mm)

Adafruit

  • Power supply
    • VDD = 1.65V to 3.3V for IC logic
    • VCC = 7V to 15V for Panel driving
  • For matrix display
    • OLED driving output voltage, 15V maximum
    • Segment maximum source current: 100uA
    • Common maximum sink current: 15mA
    • 256 step contrast brightness current control
  • Embedded 128 x 64 bit SRAM display buffer
  • Pin-selectable MCU Interfaces:
    • 8-bit 6800/8080-series-parallel interface
    • 3 /4 wire Serial Peripheral Interface
    • I2C Interface

For detailed, please refer the attached file.

FB61PA1IA8WLEY4

Step 2: Structure

WIZWatch is a simple system that is used a hardware platform called WIZwiki-W7500. The overall structure is in the picture above.

You can regulate the time using the button.

Step 3: WIZwiki-W7500 Pinout

Step 4: Electronic Assembly

# WIZwiki-W7500 <————–> OLED

  • 3.3V <————————–> VCC
  • GND <————————–> GND
  • PA_09 <————————> SCL
  • PA_10 <————————> SDA

Battery

You can simply connect battery by connecting (+) -> RAW, GND -> GND. You need to put (+) line to RAW pin in case you use any sort of external power supply, such as an external battery.

(I will write you about the details later on.)

Button

I will write you about the details later on.

Step 5: OLED TEST

Author

For more information:

https://www.instructables.com/id/Make-the-Smart-Watch/

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