Important Links
3pcs 1 Channel 12V Level Trigger Optocoupler Relay Module For Arduino 3pcs 1 Channel 12V Level Trigger Optocoupler Relay Module For Arduino
$3.79  $3.41
1 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 1 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$2.09  $1.88
BESTEP 1 Channel 24V Relay Module 30A With Optocoupler Isolation Support High And Low Level Trigger For Arduino BESTEP 1 Channel 24V Relay Module 30A With Optocoupler Isolation Support High And Low Level Trigger For Arduino
$3.19  $2.87
24V 1 Channel Level Trigger Optocoupler Relay Module For Arduino 24V 1 Channel Level Trigger Optocoupler Relay Module For Arduino
$1.69
5V-30V Wide Voltage Trigger Delay Timer Relay Conduction Relay Module Time Delay Switch 5V-30V Wide Voltage Trigger Delay Timer Relay Conduction Relay Module Time Delay Switch
$2.83
1 Channel DC 24V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 1 Channel DC 24V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$2.09
4 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 4 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$6.19
TKG2R-101 1 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 24V TKG2R-101 1 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 24V
$7.89
TKG2R-1E-K224 2 Channel Relay Module PLC Amplification Board Controller DC 12V TKG2R-1E-K224 2 Channel Relay Module PLC Amplification Board Controller DC 12V
$11.99
BESTEP 1 Channel 12V Relay Module High And Low Level Trigger For Arduino BESTEP 1 Channel 12V Relay Module High And Low Level Trigger For Arduino
$1.99
6 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 6 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$8.79
TKG2R-1E-K424 4 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 12V TKG2R-1E-K424 4 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 12V
$14.49
1A 12W AC 220V To DC 12V Switching Power Supply Module Isolation Switch Converter Module 1A 12W AC 220V To DC 12V Switching Power Supply Module Isolation Switch Converter Module
$4.29
BESTEP 6 Channel 24V Relay Module Low Level Trigger With Optocoupler Isolation For Arduino BESTEP 6 Channel 24V Relay Module Low Level Trigger With Optocoupler Isolation For Arduino
$5.99
DC 24V Multifunctional Relay Module With LED Display Delay /Self Lock / Cycle / Timing DC 24V Multifunctional Relay Module With LED Display Delay /Self Lock / Cycle / Timing
$7.79
RJ45 TCP/IP WEB Remote Control Board With 8 Channels Relay Integrated 250VAC 485 Networking Controller RJ45 TCP/IP WEB Remote Control Board With 8 Channels Relay Integrated 250VAC 485 Networking Controller
$44.91
3pcs 1 Channel 12V Level Trigger Optocoupler Relay Module For Arduino 3pcs 1 Channel 12V Level Trigger Optocoupler Relay Module For Arduino
$3.79  $3.41
1 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 1 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$2.09  $1.88
BESTEP 1 Channel 24V Relay Module 30A With Optocoupler Isolation Support High And Low Level Trigger For Arduino BESTEP 1 Channel 24V Relay Module 30A With Optocoupler Isolation Support High And Low Level Trigger For Arduino
$3.19  $2.87
24V 1 Channel Level Trigger Optocoupler Relay Module For Arduino 24V 1 Channel Level Trigger Optocoupler Relay Module For Arduino
$1.69
5V-30V Wide Voltage Trigger Delay Timer Relay Conduction Relay Module Time Delay Switch 5V-30V Wide Voltage Trigger Delay Timer Relay Conduction Relay Module Time Delay Switch
$2.83
1 Channel DC 24V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 1 Channel DC 24V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$2.09
4 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 4 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$6.19
TKG2R-101 1 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 24V TKG2R-101 1 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 24V
$7.89
TKG2R-1E-K224 2 Channel Relay Module PLC Amplification Board Controller DC 12V TKG2R-1E-K224 2 Channel Relay Module PLC Amplification Board Controller DC 12V
$11.99
BESTEP 1 Channel 12V Relay Module High And Low Level Trigger For Arduino BESTEP 1 Channel 12V Relay Module High And Low Level Trigger For Arduino
$1.99
6 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A 6 Channel DC 12V Relay Module Solid State High and low Level Trigger For Arduino 240V2A
$8.79
TKG2R-1E-K424 4 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 12V TKG2R-1E-K424 4 Channel Relay Module PLC Amplification Board Controller With Indicator Light DC 12V
$14.49
1A 12W AC 220V To DC 12V Switching Power Supply Module Isolation Switch Converter Module 1A 12W AC 220V To DC 12V Switching Power Supply Module Isolation Switch Converter Module
$4.29
BESTEP 6 Channel 24V Relay Module Low Level Trigger With Optocoupler Isolation For Arduino BESTEP 6 Channel 24V Relay Module Low Level Trigger With Optocoupler Isolation For Arduino
$5.99
DC 24V Multifunctional Relay Module With LED Display Delay /Self Lock / Cycle / Timing DC 24V Multifunctional Relay Module With LED Display Delay /Self Lock / Cycle / Timing
$7.79
RJ45 TCP/IP WEB Remote Control Board With 8 Channels Relay Integrated 250VAC 485 Networking Controller RJ45 TCP/IP WEB Remote Control Board With 8 Channels Relay Integrated 250VAC 485 Networking Controller
$44.91

EDS812 5V 3 Bit 8 Characters LCD Display Module Digit Clock LCD Screen No Backlight/White/Yellow-green

EDS812 5V 3 Bit 8 Characters LCD Display Module Digit Clock LCD Screen No Backlight/White/Yellow-green

EDS812 5V 3 Bit 8 Characters LCD Display Module Digit Clock LCD Screen No Backlight/White/Yellow-green

  • Model: SKUA65022
  • Units in Stock: 100

Price:   $2.29

Please Choose:


  • white
  • yellow&green

Add to Cart:
3 reviews            
       
Details
Reviews
    Product Introduction:
     
    1.Model: EDS812
    2.Appearance Size: 30.7×16.2×2.8mm
    3.Visual Area Size: 27.9×10.0mm
    4.Display Mode: HTN, positive display
    5.Polaroid Type: Semi-transparent 
    6.Visual Angle: 6 O'CLOCK
    7.Connection Type:metal pi
    8.Driving Way: static
    9. Driving Voltage: 5.0V
    10.Operation Temperature: -30 ° C ~ 80 ° C
    11.Storage Temperature: -40 ° C ~ 90 ° C
    12.Backlight: No/White/Yellow-green
     
    Common Problem:
     
    1. The LCD screen has a reflective mode, a semi-transparent mode, and a full transparent mode, do not know what is the difference, how to choose?    
     
    - Reflection mode: The lower polarizer is opaque, so it cannot be used in backlight. It is suitable for occasions with daytime or external light source. The advantage is that the contrast is higher;    
    - Full transmission mode: the transmission rate is about 40%, it must be used with the backlight (otherwise, the component or PCB under the screen will be seen), the advantage is that the backlight brightness is high;    
    - Semi-transparent mode: Between reflection and full-transmission mode, the transmission rate is about 30%. It can be used if it is connected to the backlight. It is more flexible.    
     
    2. LCD segment code screen has static drive and dynamic drive, how to distinguish?    
     
    - Static drive: There is only one common COM, and each pixel is a separate electrode. The advantage is that the display effect is better than that of the dynamic drive, and the disadvantage is that there are many pins;    
    - Dynamic drive: More than 2 common COMs, each electrode controls at least 2 or more pixels, and requires time division scan mode drive.    
     
    3. Can the LCD segment code screen be DC driven? What is the difference between driving with LED digital tube?    
     
    - LED digital tube: DC drive, connected by a common terminal at the anode or cathode, with the difference of common or common;    
    - LCD screen: AC drive, common side and driver side need to add AC square wave signal, relying on changing the phase of the two to control whether the corresponding pixel is displayed, this is the difference between the essence of LED digital tube, so there is no common yin or The saying of Gongyang. Never connect the common terminal COM directly to the ground, and display it by controlling the drive terminal to a high level. This will damage the LCD screen for a long time.    
     
    4. LCD segment code screen can be used without driver chip, direct MCU driver?    
     
    - Statically driven segment code screen, if the number of IO ports of the microcontroller is enough, it can be directly driven;    
    - The dynamically driven screen is driven by a time-division scan mode, and the bias waveform is not well simulated, so theoretically it cannot be directly driven by the microcontroller. Some analog voltage dividers can be used to generate analog bias voltages. They can also be directly driven by a single-chip microcomputer. However, the programming is too complicated and the display effect is not ideal. It is best to use a dedicated segment code LCD driver chip. The most commonly used is the HT1621, which is low in price. 3-wire SPI serial port driver, programming is also simple.    
     

     
    Package Included:
     
    1 x No/White/Yellow-green EDS139 LCD Display Screen

       


    Customer Reviews:

    Displaying 1 to 3 (of 3 reviews)

     
    by g***7
    Date Added: 09/13/2020
    i like it very much

    Rating: 5 of 5 Stars [5 of 5 Stars]

    by s***l
    Date Added: 09/12/2020
    Nice items

    Rating: 5 of 5 Stars [5 of 5 Stars]

    by s***y
    Date Added: 09/14/2020
    :)

    Rating: 3 of 5 Stars [3 of 5 Stars]

    Displaying 1 to 3 (of 3 reviews)

     

    Important Information Zen Cart® and Zen Ventures, LLC assumes no responsibility for the content or effect of these addons or files. No representation is made with respect to their use or suitability for your website. Installing any addons to your site has a direct effect on your site's PCI compliance. You must self-certify all addons you install, in addition to all other customisations you make to your site. Use at your own risk!We must admit that our way of life depends on quality of different goods of popular brands. Many of our clients were surprised by the incredible assortment of products in our store. You know, we have many devoted customers all over the world, and this fact proves that we sell only quality commodities

    Your page text goes here

Similar Products Featured


Please tell us what you think and share your opinions with others. Be sure to focus your comments on the product.