The issue is down to the awful code circulating around various websites that is used to read from one of those NPK sensors. Specifically in how the reading of the response from the sensor is handled.

Sensor NPK adalah sebuah sensor yang digunakan untuk mengukur zat hara pada tanah yang mana nilai yang diukur adalah Fosfor, Potasium, dan nitrogen dengan satuan mm/kg untuk membaca nilai yang dibaca ...

Car Speed Detector using Arduino and IR Sensor. That’s all; now we are in the final stage of testing our Arduino Speed Sensor project to measure the speed of moving objects. In the GIF below, you can ...

I am using fingerprint module r307 and LCD together. In that, I am using 2,3 digital pins of arduino for data transfer to the fingerprint.(I tried other pin configurations for this but it didn't work) ...

Here is a tested Arduino project that uses 3 sensor probes as water level indicator with 3 leds and one LCD display + a simple controller that turns on a motor when the water has reached the desired ...

In this video, the presenter will be demonstrating how to start using a 16×2 LCD with Arduino. The first example displays a static text message and number of seconds since Arduino reset. The next one ...

Soil is the most important medium for plant growth. The aim of this project is to develop a detection system for major nutrients of soil; Nitrogen, Phosphorus and Potassium (NPK) which consists of an ...