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Digital Potentiometer - 10K

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  • SparkFun COM-10613 | Digital Potentiometer - 10K - Image 1 | Proto-PIC.co.uk
£1.30 (inc VAT)
0.5 Grams

0 In Stock For Immediate Despatch A further 432 can be available within 3-5 working days

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 Product Reviews

  1. Hope this helps someone

    Posted by on

    #Picaxe 20X2
    #Terminal 9600

    ' Demo
    ' Controlling the Digital Potentiometer MCP4131
    ' Using the Picaxe 20X2

    SYMBOL CS = C.5 ; chip select pin is tied high
    SYMBOL channel = b0 ; range 0 to 3
    SYMBOL setting = b1 ; range 0 to 255
    SYMBOL index = b2

    channel = %00000010 ; need to get the channel into top 2 bits of byte for MSB_First
    setting = %00000000

    hspisetup spimode00, spifast


    ' get brighter
    FOR index = 60 TO 130
    setting = index
    pause 5
    gosub Send_data

    ' get dimmer
    FOR index = 130 TO 60 step -1
    setting = index
    pause 5
    gosub Send_data

    goto main

    low CS ; enable chip select
    hspiout (channel, setting) ;
    high CS ; disable chip select

 Product Description

Potentiometers are incredibly useful, whether you’re controlling the volume on your stereo or the ‘mood lighting’ in your room. The problem with traditional potentiometers is the fact that your microcontroller doesn’t have an easy way to interface with them. Digital Potentiometers solve that problem by allowing you to control a voltage splitter with digital signals.

Wire it up just like a potentiometer and use serial signals to ‘turn the knob.’ Another handy feature of digital potentiometers is that because they aren’t controlled mechanically, they don’t have a pre-determined sweep profile.In other words, depending on the way you write your code the potentiometer can ‘sweep’ in a linear fashion, a logarithmic fashion, or according to any other profile you like. Digital potentiometers can also be used in conjunction with rotary encoders to consolidate large banks of potentiometers into one ‘smart’ rotary control.


 Other Details

Brand and Part Number:
SparkFun COM-10613 Digital Potentiometer - 10K
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