Sample for Gauge has no Gauge

[DaleSchultz]

In the doc at
https://docs.blynk.cc/#widgets-displays-gauge
there is a link to a sketch which has nothing to do with using a Gauge.

It is also linked from other items such as LCD etc.

[Blynk_Coeur]

you are right

[PeteKnight]

It’s a test - to see if anyone actually reads the documentation

Pete.

[Gunner]

As for the gauge… I use it on this example

C++ Blynk (Legacy) - Code Examples for Basic Tasks

#16 - Ultrasonic Distance Sensor with Servo This little project used the HC-SR04 Ultrasonic sensor… but instead of boring old distance numbers, it will also position a servo within a range of selected distances. This sketch demonstrates a timer that can be enabled and disabled, so as not to be running something like the Ultrasonic sensor if other critical timing functions need to run. And also demonstrates enabling and disabling the servo, so that there is no jitter or fluttering when it is n…

[Gunner]

@DaleSchultz

there is a link to a sketch which has nothing to do with using a Gauge.

Actually… The Blynk Blink sketch is an essential base sketch, using Blynk’s direct GPIO pin control that can relate to most any widget.

Just load it up, place a gauge on your App set to an analog pin and hook up a POT to the same analog pin… done.

Or you can place a Gauge and a Slider, set both to the same vPin and watch the gauge move in accordance to the slider… meanwhile, using another example like the Get Data example as a base, you could then use a BLYNK_WRITE(vPin) function to see the same slider action in the sketch for dimming an LED or something.

The gauge on a digital pin might even recognise a PWM signal on that pin?? I haven’t tested that… EDIT nope, in direct GPIO mode, it is meant for Analog pins only. But with virtual pins it can display any integer value in it’s range.