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The 3D Printing Pen is compatible with both 1
control a robot
and T cobbler with ribbon cable
Dual output: Analog and Digital signals
ADC also includes a programmable gain amplifier
Dual 4-input AND Gate IC - 74HC21 SPST The 3D Printing Pen isDual 4 input AND Gate IC 74HC21 The 74HC Series 74HC21 contains two independent 4 input AND gates. The 74HC21 is characterized for operation from 0 C to 70 C. The 74HC21 features is a package Options include Plastic "small outline" packages, ceramic chips carriers and flat packages and plastic and ceramic DIPs. Pinout: Pinout Of 74HC21 IC
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