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This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip is like a rotary switch - it internally routes the common pin (COM in the schematic, SIG on the board) to one of 16 channel pins (CHANxx). It works with both digital and analog signals (the voltage can't be higher than VCC), and the connections function in either direction. To control it, connect 4 digital outputs to the chip's address select pins (S0-S3), and send it the binary address of the channel you want. This allows you to connect up to 16 sensors to your system using only 5 pins!
Since the mux/demux also works with digital signals, you can use it to pipe TTL-level serial data to or from multiple devices. For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller. You can then select any one of those 16 devices to listen to. If you want two-way communications, you can add a second board to route your microcontroller's TX line to 16 device's RX lines. By using multiple boards, you can create similar arrangements for I2C, SPI, etc.
The internal switches are bidirectional, support voltages between ground and VCC, have low "on" resistance and low "off" leakage, and to prevent crosstalk, perform "break-before-make" switching. The board also breaks out the chip's "enable" pin, which when driven high, will completely disconnect the common pin (all switches "off").
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This load sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales ..
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The Arduino Mini 05 is a small microcontroller board originally based on the..
The Arduino Mini 05 is a small microcontroller board originally based on the ATmega168, but now..
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This sensor adopts TCS3200 programmable color light-to-frequency converter, it can be applied to col..
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keyestudio GUVA-S12SD 3528 Ultraviolet Sensor is used to detect ultraviolet light. It includes GUVA-..
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This latest IR remote control kit is comprised of mini super-thin IR remote control and 38HKz IR rec..
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The AD8232 is an integrated front end for signal conditioning of cardiac bioelectrical signals to mo..
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1. 5V Omron solid state relays 240V / 2A, output with resistive fuse 240V / 2A.2. Size: 57 * 55 * 23..
keyestudio PRO MICRO is a microcontroller board based on the ATMEGA32U4-MU. It is an easy-to-use ope..
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Using this device enables the use of Arduino code in a custom embedded project witho..
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Decode nearly any kind of 1D (striped) barcode in your project using this adorable compact barcode s..
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Bare Conductive Paint is a multipurpose electrically conductive material perfect for all of your DIY..
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The credit-card-sized computer has become even smaller! The Raspberry Pi Zero W is still the Pi you ..
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