SparkFun Mux Shield II Shields
SKU: 1336656922

SparkFun Mux Shield II Shields

Sale price$1993.50 Regular price$2215.00
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Description

SparkFun Mux Shield II ShieldsSometimes youve got way too many inputs, or outputs or both. How are you going to get them all connected to your Arduino? The Mux Shield, thats how. The Mux Shield II from Mayhew Labs is an upgrade on their previous Mux Shield which makes it possible to route up to 48 analog and digital inputs or digital outputs to and from your Arduino board. The Mux Shield II improves on the original by moving all of the I O pins to the end of the board, thus

Sometimes you’ve got way too many inputs, or outputs… or both. How are you going to get them all connected to your Arduino? The Mux Shield, that’s how. The Mux Shield II from Mayhew Labs is an upgrade on their previous Mux Shield which makes it possible to route up to 48 analog and digital inputs or digital outputs to and from your Arduino board.

The Mux Shield II improves on the original by moving all of the I/O pins to the end of the board, thus allowing you to add one big connector and hook up a ribbon wire or similar cable solution. This also gets the pins out of the way so that the Mux Shield can be in the middle of a stack, with a shield on top of it, and you can still get to the I/O pins. The pins are arranged into three rows of sixteen and each row can be individually set as a digital input, a digital output or an analog input from the Arduino sketch! Further increasing the flexibility of the board, Mayhew Labs added solder jumpers to the bottom of the board that allow you to shut off this software control feature and “hard wire” the functionality of each row, freeing up the associated Arduino pins for other shields in the stack.

The Mux Shield uses TI 74HC4067 analog multiplexers (mux?s) for input functionality and TI 74HC595 shift registers for output functionality. Don’t worry if that’s jibberish to you, the included Arduino library wraps it up and makes it very easy-to-use.

The shield comes without any headers so be sure to pick up some stackable shield headers!

Features:

  • Control up to 48 Pins from your Arduino!
  • Multiple modes:
    • Analog Input
    • Digital Input
    • Digital Output
  • Solder Jumpers for Hard-Wired Mode Select
  • Arduino Library and Example Code Available

Documents:

Replaces:DEV-09832

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SKU: 1336656922

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Eve
Omaha, US
★★★★★ 1
Lost its quality after gaining popularity
Size: 1 count (Pack of 12)
I’ve been subscribed to this brand for at least 2 years now. It used to be heavy duty, now they switched to cheap thin carton like everyone else has. No point to overpay for average quality.
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Chelsea, US
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Great product
Color: 3675 Silver Blue, Color: 3675 Silver Blue
This watch is beautiful. And feels great
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JJ
Grantham, US
★★★★★ 1
Junk!
Color: 3675 ALL Silver
Good luck getting the back plate back in once you change the battery! You get what you pay for so spend the extra money and buy a better watch not made in China.
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John S. Willard, Jr.
West Palm Beach, US
★★★★★ 4
Really nice watch!
Color: 3675 ALL Black
Really nice and clean looking watch. Fairly easy to adjust the watch band, with a little patience. Item description stated battery operated, but I don’t think it is as there is no indication that it has a battery in it. Other than that, really decent watch! I would have given it a five star rating if it were battery powered.
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Reviewed in the United States on March 23, 2026
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Ralph
Birmingham, US
★★★★★ 5
Great price
Color: 3675 Silver Grey
The watch looks like it should cost more than the actual price. It catches people's eye and so far it keeps accurate time. Keep in mind I've only had the watch about two weeks. Of my 10 every day watches this one is the most attractive.
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Reviewed in the United States on December 5, 2025

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