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At a glance
- Condition
- New
- Color
- Yellow & Blue
- Model
- EL-SM-008
- Memory
- 2 MB DDR
- Screen size
- 0.96 in
- Weight
- 1.06 oz
- Screen Resolution
- 128x64
Features 5
- Three Displays For More Projects: Build a sensor dashboard, robot status panel and classroom demo at the same time, or keep spare modules ready for testing; each compact screen delivers 128x64 graphics with self-luminous pixels and no backlight
- Fixed Yellow-Blue Zones Make Status Information Easy To Scan: Use the yellow upper band for headings, alerts or icons and the blue lower area for readings and menus; the display colors are fixed by the OLED panel rather than programmable RGB, and the screen does not support touch input
- Four-Wire I2C Connection Saves Controller Pins: Connect GND, VCC, SCL and SDA according to the module labels, scan the I2C bus and use the default 7-bit address 0x3C; the 0x78 PCB marking represents the corresponding 8-bit write-address format used by some documentation
- Works With Common 3.3 V & 5 V Project Platforms: Add compact visual feedback to compatible microcontroller and single-board computer projects, but verify the module pin order, supply voltage, I2C logic levels, pull-up voltage and SSD1306 software configuration before powering
- Three Modules Plus Ten Dupont Wires: Includes 3 OLED display modules, 5 female-to-female and 5 male-to-female jumper wires; controller boards, breadboards and enclosures are not included, and multiple displays on one I2C bus require unique addresses where supported or an I2C multiplexer
Description
Note: The 7-bit I2C address of the 0.96-inch OLED screen is 0111100 (0x3C). 0x78 in the PCB is 0111100, and the 8th bit represents the "write" operation. If the code only specifies the I2C slave device address, use the 7-bit binary code (such as 0x3C). Specifications: Q1: The I2C scanner reads the address 0x78. Should I use 0x78 directly in the code? A: Do NOT use 0x78 directly! 0x78 is the 8-bit I2C write address (the least significant bit is the read/write control bit). Shift it right by 1 bit: 0x78 >> 1 = 0x3C. 0x3C is the 7-bit device address required by most libraries. Popular OLED libraries for Arduino and ESP32 (U8G2, Adafruit_SSD1306, SSD1306Wire) all accept the 7-bit address 0x3C. Wrong usage: display.begin(0x78); → The OLED screen will not light up Correct usage: display.begin(0x3C); Q2: When to use address 0x3C, and when to use 0x3D? A: The address is determined by the logic level of pin SA0 on the PCB (hardware feature of SSD1306): The OLED display doesn’t require backlight, which results in a very nice contrast in dark environments. Additionally, its pixels consume energy only when they are on, so the OLED display consumes less power when compared with other displays. The model we’re using here has only four pins and communicates with the ESP32 using I2C communication protocol. There are models that come with an extra RESET pin. There are also other OLED displays that communicate using SPI communication. Because the OLED display uses I2C communication protocol, wiring is very simple. You just need to connect to the ESP32 I2C pins as D21(SDA)、D22(SCL) To control the OLED display you need the adafruit_SSD1306.h and the adafruit_GFX.h libraries. Follow the next instructions to install those libraries.
Specs 24
| Standing screen display size | 0.96 inches |
|---|---|
| Screen Resolution | 128x64 |
| Max Screen Resolution | 128x64 |
| Processor | core_i7 |
| RAM | 2 MB DDR |
| Hard Drive | SSD |
| Graphics Coprocessor | Integrated Graphics |
| Card Description | Integrated |
| Brand | ELEGOO |
| Series | EL-SM-008 |
| Item model number | EL-SM-008 |
| Hardware Platform | PC |
| Operating System | All Windows Server Versions 2000 |
| Item Weight | 1.06 ounces |
| Package Dimensions | 4.65 x 2.05 x 0.83 inches |
| Color | Yellow & Blue |
| Processor Brand | ELEGOO |
| Number of Processors | 3 |
| Computer Memory Type | DIMM |
| Hard Drive Interface | Firewire |
| Hard Drive Rotational Speed | 1 |
| Optical Drive Type | DVD-R |
| Voltage | 3.3 volts, 5 volts |
| Manufacturer | ELEGOO |
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