Note: This sketch is an example of 2 units of HC-SR04 Ranging Module connected to Arduino Uno ATMega 238. The dual HC-SR04 trigger by the same output pin 2 and echo ...

💧 Monitoring water tanker level using NodeMCU ESP8266 and HC-SR04P Ultrasonic Sensor and broadcasting it using a simple HTTP server inside NodeMCU ESP8266 and show data in an Android App ...

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The HC-SR04 sonar modules are available for a mere pittance and, with some coaxing, can do a pretty decent job of helping your robot measure the distance to the nearest wall. But when sellers on eBay ...

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Makers, developers and enthusiasts building distance related projects may be interested to know that the HC-SR04 ultrasonic sonar distance sensor is now available to purchase directly from the ...

Some of the best hacks are the ones which seem perfectly obvious in hindsight; a solution to the problem that’s so elegant, you wonder how it never occurred to you before. Of course we also love the ...

Abstract: Internet of Things (IoT), Wireless Sensor Networks (WSN) and robotics systems consist of an embedded processor along with a myriad of possible sensors and actuators chosen according to the ...