Professional China Digital Panel meter LCD Display for Mauritius Manufacturers

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Sinda Display Technology Co., Ltd. is one of the best China LCD display  manufacturers and suppliers. We can custom LCD display exactly according to your request. Now we are provide customs display for  instrument like digital panel meter,multimunction meter,elevator, POS machines, LGP Dispenser, Fuel Dispenser, Oil Dispenser, Gas Dispenser, Flow Meter, KWH Meter, Energy Meter, Water Meter, Gas Meter, Smart Meter, Clock & Watch, Telecommunications device, Home Appliance, Industrial Contro...


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Professional China Digital Panel meter LCD Display for Mauritius Manufacturers Detail:

Sinda Display Technology Co., Ltd. is one of the best China LCD display  manufacturers and suppliers. We can custom LCD display exactly according to your request. Now we are provide customs display for  instrument like digital panel meter,multimunction meter,elevator, POS machines, LGP Dispenser, Fuel Dispenser, Oil Dispenser, Gas Dispenser, Flow Meter, KWH Meter, Energy Meter, Water Meter, Gas Meter, Smart Meter, Clock & Watch, Telecommunications device, Home Appliance, Industrial Controller, Car Audio, Color Display Systems and the other industries, Measurement device, UPS, Solar Inverter.


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  • Sony Alpha a5000 Mirrorless Digital Camera with 16-50mm OSS Lens

    Sony Alpha a5000 Price & Review

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    The digits look very bright, but they are fine, and can be controlled via software in the control register…

    These are some ways to build some displays for projects.

    The chip i am using i got interested in from seeing modules sold using it so i got the datasheet and started experimenting.

    It is the SAA 1064 and you can get the data sheet here:

    https://www.nxp.com/documents/data_sheet/SAA1064_CNV.pdf

    or order it from www.mouser.com.

    I had a very interesting time with this one, like I mentioned the chip don’t turn on until the 7-segment displays are connected. It is a very simple chip. I also was forced t learn everything on I2C and it too is a relatively simple protocol.

    The chip I used is un-necessarily large for this project, it is a Picaxe 28×1 but anything with a I2C scl, sda will work just fine for driving the SAA1064

    Below is the code snippet i used in the actual presentation. It is written in basic for the picaxe and you can Google “Picaxe” to learn more.

    Using the 28X1 it will also flash 10 LED So you will have to “cut” those lines out or reprogram them for the chip you use.

    Actually this is from another project that i put aside waiting for the transistors, and neglected until now, so the original never “multiplexed because of the transistors” but hibernated beautifully .

    some tips:

    1] connect all the displays
    2] use 4.7k ohm resistors pull up on the scl, sda lines
    3] read the data sheet and how to load the control register.

    The displays are “common anode”

    the snippet to get started is below;

    MAIN:

    low portc 0 ‘Turns off the solid stare relay turning the power off, but to controller
    low 0
    low 1
    low 2
    low 3
    low 4
    low 5
    low 6
    low 7
    low portc 6
    low portc 7

    ‘ toggle state of output 1

    symbol i = w0 ‘ Counter
    symbol j = b13 ‘ Counter
    symbol temp = b12
    symbol Cnt= w1 ‘ Counter

    symbol Digit0 = b8 ‘ Hold digit0 data
    symbol Digit1 = b9 ‘ Hold digit1 data
    symbol Digit2 = b10 ‘ Hold digit2 data
    symbol Digit3 = b11 ‘ Hold digit3 data
    symbol slvAddrWR = $70 ‘ I2C write address
    symbol slvAddrRD = $71 ‘ I2C read address

    ‘Ok to here

    i2cslave slvAddrWR, i2cslow, i2cbyte ‘Initialize I2C-7SEG
    writei2c %00000000,(%00100111, %000000000, %00000000, %00000000, %00000000)
    ‘ note: in above order instruction byte, control byte, the 4 Data digits

    Cnt = 1 ‘ Initialize counter
    FOR i = 0 TO 9999 ‘ Setup to count from 0000-9999
    GOSUB CONVERT ‘ Convert decimal into each LED segment
    writei2c 1,(Digit0,Digit1,Digit2,Digit3) ‘ Write each digit to 7-segment

    Cnt = Cnt+1 ‘ Update counter

    NEXT

    CONVERT: ‘ Lookup table for 7-segment
    high 0
    pause 100
    low 0

    high 1
    pause 100

    low 1
    high 2
    pause 100

    low 2
    high 3
    pause 100

    low 3
    high 4
    pause 100

    low 4
    high 5
    pause 100

    low 5
    high 6
    pause 100

    low 6
    high 7
    pause 100

    low 7
    high portc 6
    pause 100

    low portc 6
    high portc 7
    low portc 7

    pause 100

    ‘ Bellow is the look-up table for the individual digits.

    temp = cnt % 10
    LOOKUP temp, ($3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F,$77,$7C,$39,$5E,$79,$71), Digit0
    temp = cnt / 10 % 10
    LOOKUP temp, ($3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F,$77,$7C,$39,$5E,$79,$71), Digit1
    temp = cnt / 100 % 10
    LOOKUP temp, ($3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F,$77,$7C,$39,$5E,$79,$71), Digit2
    temp = cnt / 1000 % 10
    LOOKUP temp, ($3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F,$77,$7C,$39,$5E,$79,$71), Digit3

    RETURN

    END


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