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blynkkk / blynk-library

Blynk library for IoT boards. Works with Arduino, ESP32, ESP8266, Raspberry Pi, Particle, ARM Mbed, etc.
https://blynk.io
MIT License
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SuperChart delta values #421

Closed dontsovcmc closed 6 years ago

dontsovcmc commented 6 years ago

I write increasing values to VirtualPin. I add SuperChart to see history. I need to compare values between measures: see columns upper zero and lower. Like this: http://criticaltosuccess.com/wp-content/uploads/2014/05/IMG-Difference-Chart-Actual-v-Target-01.png I see straight SuperChart settings 'delta', but I can't understand how it works.

Is it possible?

If it is not possible, maybe I should calculate deltas on the device and send to another pins? The better way to do this is read previous values from virtual pin, calculate delta, send new data. I don't see API for reading values..

vshymanskyy commented 6 years ago

Again, please use Blynk community forum for such questions. You may just copy-paste it