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easy fixed
Each HC-SR04 module includes an ultrasonic transmitter
Vista Win 7
The PIR sensor module provides an output "HIGH" when a human body is detected within its range and an automatic Delay "LOW" when the body leaves its range
Ceramic Capacitor
8 Digit Seven Segment Display Module with MAX7219 jumpers easy fixedThis 8 digit seven segment display module is based upon the Maxim MAX7219 LED display driver. The module uses two standard 4 digit seven segment displays to display a total of 8 digits in RED with decimal point. A convenient input and output header allows additional modules to be daisy chained. The entire device includes a 150A low power shutdown mode, analog and digital brightness control, a scan limit register allows the user to display 1 8 bit
