WTB: Jetbeam RRT01 – Any place to buy it?! + [RRT01 2019 discussion]

[contactcr]

See this post from clemence during some of his testing of the “2019” model:

[MOD] RRT01 (slo-mo progression)

UPDATE 190802: I hate RRT01 driver, it creates almost as much heat as the LED. Tried to lower the max current by changing the sense resistor from 0,05 Ohm to 0,18 Ohm. I wanted to make it safe for a single E21A and get slightly more regulation, which wasn’t the case. Although now the output current is reduced to ” single E21A safe” at 2,55A/4,2V, the current still going up and down depending the the input voltage. This is weird because the driver doesn’t look like a linear driver but behaves l…

Basically just confirmation that it was designed to accept CR123 and thus is a boost driver of some kind.