Feedback about circuit design

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gambituk
Posts: 2
Joined: Sat Sep 30, 2017 12:38 pm

Feedback about circuit design

Post by gambituk »

Hello, i've "designed" or more rather guestimated / blundered blindly around designing a circuit as an emitter for 3 IR Led's, i would appreciate any suggestions or alternative solutions that might be better or more easily implemented.

It's 3.3V from an ESP8266

I have a link to the design on a simulator, at the follow link.. http://tinyurl.com/y9kpbewx (I have shortened it because it was huge directly from the site)

Image

It seems to function but i don't know nearly enough to evaluate it's quality etc.

Thanks for any feedback

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AnalysIR
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Posts: 679
Joined: Sat Aug 31, 2013 3:51 pm
Location: Dublin, Ireland
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Re: Feedback about circuit design

Post by AnalysIR »

Your circuit looks fine. Make sure the onboard 3v3 regulator can source the extra 169mA current, without damage.

However, if you sourced 5v into the IR leds, you could put 2 IR leds in series and increase the current, by reducing hte size of the resistors from 22r to 10r...this would save some components & increase IR power.

If you need 3 LEDs, then stick with your current design, which is fine.

FYI: we have recently launched a new IR shield for ESP8266/ESP32, using Wemos D1 Mini footprint, available via our store.

Also see
https://www.analysir.com/blog/2013/11/2 ... d-circuit/

gambituk
Posts: 2
Joined: Sat Sep 30, 2017 12:38 pm

Re: Feedback about circuit design

Post by gambituk »

Great, thanks for the feedback, it's amazing how nervous i can get over a circuit with only a few low value componants! :D

It has to be 3 led's, so i guess i will just try and see if it's enough power.

great site, great support,

wishing you all the best.

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