![]() ![]() Tft.setCursor((mark - 5), (originY + 16)) I did that and it works if i write a number for "pressure_mbar". The website says to change the code under "void graph()". I copied the code and used the guide on the site to change the scale of the graph. I looked around the internet and found this website: Serial.println("Failed to initialize ADS.") Setting these values incorrectly may destroy your ADC! exceed the upper and lower limits if you adjust the input range! functions, but be careful never to exceed VDD +0.3V max, or to The ADC input range (or gain) can be changed via the following Serial.println("Getting single-ended readings from AIN0.3") I tried it with a 16x2 LCD and it worked fine. The equation for the pressure is: pressure = 10^(Voltage-5.5). The pressure is calculated from a Voltage reading I get from an ADC ( ADS1115). Open the Arduino IDE and create a new sketch named FunctionGenerator with the code shown below.I want to plot a graph of a pressure on an LCD Screen(Elegoo 2.8” TFT). This section will describe how to generate and display waveforms using the Serial Plotter. If you need assistance with your particular setup, post a question in the comments section below and I, or someone else, can try to help you. I am using the Uno WiFi R2 in this tutorial to take advantage of the on-board inertial measurement unit (IMU) so that I do not have to connect additional hardware. If you are using a different Arduino board or computer setup, the vast majority of this tutorial should still apply, however, some minor changes may be necessary. ![]() My development system consists of the Arduino Uno WiFi Rev2 development board connected to a macOS based computer running the desktop Arduino IDE. You know what they say about assumptions. I only realized recently that it is actually used for plotting values on a graph and can be a valuable tool for visualizing data along with debugging code. I had previously seen it in the Tools pulldown of the main menu, but had assumed that since I did not have a physical plotter, it did not apply to me. Arduino Uno WiFi R2 (available on Arduino and SparkFun) With Compatible USB CableĪlthough I have worked with the Arduino IDE for a while now, I only recently came across a really cool feature called the Serial Plotter. ![]() Linux, macOS, Or Windows Based Computer With A USB Port.The resources created for this tutorial are available on GitHub for your reference. If you are new to the Arduino platform or would just like to refresh your knowledge, please see our Blink: Making An LED Blink On An Arduino Uno tutorial before proceeding with this one. A basic understanding of electronics and programming is expected along with some familiarity with the Arduino platform. This tutorial will teach you how to display waveforms and real time data using the Arduino Serial Plotter.
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