Hello everyone, I need help to advance in my practice, I am working with the ENC28J60 ethernet module, I already did the first step that is to turn on and off an LED with this module, I worked at first and without complications. Then I followed the practice of the DHT11 sensor and all good, very well I would say. Now I replaced the DHT11 with an LM35DZ with which I was working on ARDUINO and measuring negative temperatures, which I show on a 16x02 LCD with I2C. Now I wanted to make the values be displayed in GAUGE or Display in BLYNK, but I have not succeeded. So the question is, how do I, I have seen that there is an LCD in BLYNK, is there any way to configure it so I can see my negative values ?. Thanks for your help and taking advantage of what I am writing and that I have your attention, I have seen that for the module WIFI ESP8266 I must update it to version AT v1.1.0.0, they will know of some link to get it and learn to change the firmware.
Hello. Did you change min/max values for Gauge?
Many widgets will display negative values without any changes from your end. Some widgets like the LCD require Strings. Study the examples for each widget so you know what data type they will accept.
Use Arduino function of dtosrf() to covert numbers to Strings if the widget will only accept Strings.
Blynk will work with at least half a dozen AT versions as per the docs at https://github.com/blynkkk/blynk-library/wiki/ESP8266-with-AT-firmware. You should establish which version you currently have before considering any change to your hardware.
First of all, I appreciate your prompt attention. It is already working, and I made the change of values in the GAUGE widget but did not show it to me, now I put my LM35 in the freezer of the refrigerator and it shows me the reading. As data, I thought I needed to display the value for an analog port but not ... I'm showing the value for the V5 Port and it works great, I can see the monitoring from my phone with WIFI or my phone data. Thank you very much, I will continue with something new now,
Is Blynk totally free or I have to pay if I make a project and some company is interested? because with Blynk you can do many things.I wanted to make a connection between my ARDUINO UNO and the ESP8266, previously I had already configured it, I did a simple practice of monitoring for a local IP port, with that, I wanted to make the example that Blynk offers once you install the library. As you say, I did not set the version, so I will do what I can to start working with it, I thank you for sharing the link to read and inform me well before starting. Thank you very much.