LitterBug: Thanks for the info. Seems like overkill to have to put in an FC just to get an altitude OSD, but that may be the only option. By the way, the Barometric OSD linked to above (which also provides battery and timer) actually is still available. It's perfect for my needs. Self zeroing, self timing, 1 meter resolution, etc. However it costs $75 to get one here in the USA. GetFPV said they didn't have a device like this, but wished they did. My opinion is that if you could get this for under $30 here in USA, they would sell gobs of them. The idea of running a altitude sensor through a $7 MinimOSD seems doable but for the inability to find a compatible altitude/barometric sensor.