I'm watching this thread quietly so far and testing of course (one of the strategy I would apply if I master it).
Here are some helfull links:
(check 1st two indicators ... congestion and supres)
(here is the renko EA and complete guide)
Here is a renko ea I was testing. But there is not enough info available for me to see how it is actually opening and closing, etc.
renko_ma_cross_ea.mq4 15 KB | 375 downloads