β 20 min readShowdown: RS550 12V DC 8000 vs RS-555 12V DC 6000 RPM DC Motor
Vol. 56 | The Heavyweight DC Drivetrain Duel Reliability isn’t optional when you’re designing actuators that need to move actual steel or
Read Article βThis 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 canβt be higher than VCC), and the connections function in either direction. To control it, connect 4 digital outputs to the chipβs address select pins (S0-S3), and send it the binary address of the channel you want (see the datasheet for details). 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 microcontrollerβs TX line to 16 deviceβs 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 βonβ resistance and low βoffβ leakage, and to prevent crosstalk, perform βbreak-before-makeβ switching. The board also breaks out the chipβs βenableβ pin, which when driven high, will completely disconnect the common pin (all switches βoffβ).
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Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
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