Help: Time based Rate Of Change (TROC) indicator

Does anyone know of any indicator that measures and plots on an oscillator the average time it takes a candle open-close.

Example.

Candles 1,2,3,4,5,6,7,8 each takes 4,5,8,2,7,1,9,3 minutes respectively from open to close.
So for a set period = 7, at the close of the the 7th candle, the average for the last 7 candles =(4+5+8+2+7+1+9)/7 is plotted on the oscillator.
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This is intended for offline charts whose candles don't take a uniform open-close time.
Helps to measure the increase in speed, signaling a possibility of a clean scalpable continuation.

Asked here, and jeanlouie did the 1st version here.
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If interested, will be posting here the latest version and later my findings.
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Latest version_20.09.2020:

We doing several back & forward tests, may get interesting.
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Latest version uploaded (post#3)

I've been searching for this exact same thing!

Subscribed and thanks to you and @jeanlouie

Should get very interesting indeed

An idea came to me when watching "volume candles" form. As volume comes in the candle grows wider in real-time.

What if we were able to incorporate the idea of visualizing time on a range bar chart in a similar way. The range bar gets wider with time in real-time (millisecond). Then when price sits they would be fat bars and when it runs they would appear thin. Similar to this, but with set ranges of course.

is there an updated version of this indicator?
Candle_Speed_Meter_v1.32.ex4