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Arduino with Ultrasonic Sensor HC-SR04

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The HC-SR04 ultrasonic sensor uses SONAR to determine the distance of an object just like the bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package from 2 cm to 400 cm or 1” to 13 feet. The operation is not affected by sunlight or black material, although acoustically, soft materials like cloth can be difficult to detect. It comes complete with ultrasonic transmitter and receiver module. Follow the circuit diagram and make the connections as shown in the image given below. This code returns the distance in Inches... I think it's more accurate than other code I have seen online and returns more usable results. Write below program  const int t1 = 7; const int p1 = 8; void setup() {   Serial.begin(9600);   pinMode(p1, INPUT);   pinMode(t1, OUTPUT); } void loop() {   long duration1, cm1;   giveSignal(t1);   duration1 = pulseIn(p1, HIGH)...
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Can computer control human body

watch this https://www.ted.com/talks/greg_gage_how_to_control_someone_else_s_arm_with_your_brain Electrophysiology  is the study of the electrical properties of biological  cells  and tissues. It involves measurements of voltage  change or electric current  on a wide variety of scales from single  ion channel   proteins  to whole organs like the  h eart . In  neuroscience , it includes measurements of the electrical activity of  neurons , and particularly  action potential  activity. Recordings of large-scale electric signals from the  nervous system , such as  electroencephalography , may also be referred to as electrophysiological recordings.  They are useful for  electrodiagnosis  and  monitoring . It is just a basic concept how the brain can control the human body. But now think in now's a day we are exploring new ideas on machine learning so using this kind of approach computer can...
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Make ultrasonic sensor more efficient with arduino

If you have seen my last post on ultrasonic sensor then i have some very basic trick to make ultrasonic sensor to give some efficient result by using averaging method i have done it.... the connection is same as my last post after done connection write this code const int t1 = 7; const int p1 = 8; void setup() {   Serial.begin(9600);   pinMode(p1, INPUT);   pinMode(t1, OUTPUT); } void loop() {   long duration1, cm1;   giveSignal(t1);   duration1 = pulseIn(p1, HIGH);   cm1 = microsecondsToCentimeters(duration1);   giveSignal(t1);   long duration2 = pulseIn(p1, HIGH);   cm2 = microsecondsToCentimeters(duration1);   giveSignal(t1);   long duration3 = pulseIn(p1, HIGH);   cm3 = microsecondsToCentimeters(duration1);   giveSignal(t1);   long duration4 = pulseIn(p1, HIGH);   cm4 = microsecondsToCentimeters(duration1);   giveSignal(t1);   long duration5 = pulseIn(p1, HI...
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