Green Heron Engineering RT-21 Az/El
firmware v1.04
Green Heron Engineering · Released Sep 9, 2026 · First seen Sep 9, 2026
Source:
greenheronengineering.com
v1.04 is not the latest firmware for the Green Heron Engineering RT-21 Az/El: the current version is v2.013 (September 9, 2026). Go to v2.013
What's in this update
Adds Brightness Control for OLEDS v2.0 RT-21 Az El Firmware Version 2
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