HiLetgo 5pcs HC-SR04 Ultrasonic Module Distance Sensor
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To compute range, it necessitates the use of a microprocessor to interpret the timing pulses it generates. Any small microprocessor will do the job - ESP8266 and Arduino For instance, consider the 8266, ESP32, or Raspberry Pi.
Selected User Reviews For HiLetgo 5pcs HC-SR04 Ultrasonic Module Distance Sensor
These sensors aren't working properly - After a few seconds or minutes of use, they will stop responding. HC-br>I have an HC-br>I have an HC-br>I have an HC-br>I have an SR04 from another kit (the Elegoo EL-1) KIT- 3 Arduino Uno starter kit) that functions perfectly. I started a new project a few days ago that required a range finder, so I ordered a few of these and used one in my project. br>br>However, after a short period of use, the range finder became unresponsive. Power- The range finder became responsive after cycling it, but only for a short time before falling asleep again. br>br>I double-checked my wiring and Python code - they were both fine. There will be no issues. br>br>I looked on the internet for people who were having similar issues and discovered that there were a lot of them. (Type "hc-" into your search engine. ) to see what I found, type "sr04 stops responding echo" )br>br>The problem is that *some* of the HC- There is a fatal bug on the SR04 boards. I switched the cable from this HC- to confirm my suspicions. Elegoo HC-SR04 SR04 SR04 SR04 SR04 SR04 SR04 SR04 SR04 - It worked perfectly for an hour with no changes. br>br>As far as I can tell, the HC- SR04 provides an output pulse (on the pin labeled ECHO) in response to an input pulse (on the pin labeled TRIG), but it also expects an echo on the ECHO pin. It's possible that a microcontroller won't respond to an echo right away, or that the HC- It will go unnoticed by SR04. Many HC- A timeout is built into the SR04s. They will resume operation if they do not receive the echo within a short period of time. Some HC-infected individuals, on the other hand, have been found to be SR04s don't, and if an echo is initially missed, they'll keep waiting indefinitely. Some people have found a way to get around this bug by pulsing the Echo pin to get it to work again, but with some HC-compatible devices, this isn't always possible. SR04s - including those for sale on this page - This isn't going to happen. The only way to get things going again is to turn on the power. cycle it. tealdeer - a tealdeer is a tealdeer is a tealdeer is a t Purchase these items at your own risk. Buy HC- SR04s from a different manufacturer.
The day after I placed my order, it showed up at my door! There will be no delays or mucking around. br>These sensors are great value for money, with 5 pieces for $9 and bubble wrapping to ensure safe shipping. br>To make use of one, a project was built in about 10 minutes, as seen in the video attached. There are a plethora of Arduino libraries available, all of which function as expected. For small movements, the detection range has been measured as high as 10ft. br>These will almost certainly end up in robot line follower projects, perhaps even a mosquito repellent circuit (which I sincerely hope is the case!). ), as well as a rangefinder that works on a screen. They'd be ideal for home security projects as well.
This was not done by HiLetgo in this case. These are high-quality parts that are dependable and perform exactly as they should. br>br>The five-pack is ideal if you want to build something that can measure clearance from all sides or if you want to make multiple projects that require the ultrasonic distance sensor. br>br>These sensors are part of a class I'm teaching, and I know I won't have to worry about my students' hardware malfunctioning when they use them.
It performs admirably.
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