74HC139 (Dual 2 to 4 Line Decoder) aluminum connector This serial Wifi module add

This serial Wifi  module add wireless ethernet connectivity to your microcontroller / Arduino through serial TTL pins (Rx and Tx)

The   Key   to   printing   resolution   is   mostly   depending   on   the  Extruder

K Piezo element is a sensor which is used to detect vibration

Propagation Delay Time: 125 ns at 2V / 21 ns at 6V

74HC139 (Dual 2 to 4 Line Decoder) aluminum connector This serial Wifi module add74HC139 IS A dual 2 to 4 line decoder demultiplexer IC Specification Propagation Delay Time: 145 ns at 2V 25 ns at 6V Power Dissipation: 320 mW Output Current: 5. 2 mA at 6 V No. of Inputs: 3X 3 No. of Pins: 16 Operating Temperature Range: 40C to +125C Supply Voltage Range: 2V to 6V Package: DIP 16 Logic Diagram Symbol Pin Description 1E, 2E 1, 15 enable input (active LOW) 1A0, 1A1 2,3 address input 1Y0, 1Y1, 1Y2, 1Y3 4,5,6,7 output (active LOW) GND 8