Many people wonder how much current the Micro MinimOSD draws so I am sharing it here.



People have mixed reports on how much current the unit draws: 100mA, 250mA, 500mA. Looks like it depends where you buy from, it appears the manufacture is inconsistent across the board... e.g. hardware variations of cheaper ones are creating different power consumption. There are so many manufacturers pumping these things out now.

Don't solely rely on the spec provided on the product page, it's most likely to be a "copy and paste" from another seller/manufacture. My advice is to do your own testing/measurement just in case. Worst case senario is to assume it draws 0.5A (although IMO this will cause overheat on most of the PDB out there nowadays with linear BEC), and make sure your voltage regulator can handle that.

By the way Some need to add capacitor to the power line, just to keep the OSD turned on during punch-outs. That's because the MAX chip is extremely vulnerable to voltage variations and "dirty" power, the cap smooths that out.

For setting up guide check out my blog post: http://blog.oscarliang.net/minimosd-micr...-pid-rssi/

(23-Jan-2016, 12:40 PM)Oscar Wrote: By the way Some need to add capacitor to the power line, just to keep the OSD turned on during punch-outs. That's because the MAX chip is extremely vulnerable to voltage variations and "dirty" power, the cap smooths that out.

I feel the answer to this may be obvious - but does this apply if you're powering the OSD from something like a DemonRC v2 PDB?

(26-Jan-2016, 05:06 PM)Jason Wrote:

(23-Jan-2016, 12:40 PM)Oscar Wrote: By the way Some need to add capacitor to the power line, just to keep the OSD turned on during punch-outs. That's because the MAX chip is extremely vulnerable to voltage variations and "dirty" power, the cap smooths that out.

I feel the answer to this may be obvious - but does this apply if you're powering the OSD from something like a DemonRC v2 PDB?

Short answer is "It may be enough, but that depends on Your setup".

My old EMAX ESC's have preinstalled caps and don't trash the power line, so connecting OSD directly to Core V2 (a pre-retail version without additional cap on 5v on that one). Micro works without any problem.

On the other setup, more demanding  - cobras 2300kv with littlebees that are known to make the power noisy or even burning FPV equipment with voltage spikes - I have another pre-retail v2 core, this time with a tantalum cap mounted on 5v line (but it has half capacity of the final retail one) and I loose image from time to time, so I was left with either using additional cap on OSD pins or powering it via aomway 5v out. Both ways work.

Again - note, that current retail version of this PDB has better 5v filtering than both units I have - so may be enough for second setup. My Cores are "test units" and the second one was made to test that exact issue of micro OSD switching off.

PS. Retail core also has dedicated 5v out for micro. Both my versions don't - I powered mine from FC motor pin, so some additional noise might have came into play.