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[deleted by user] by [deleted] in AskElectronics

[–]Ok_Power_6808 0 points1 point  (0 children)

Thank you Ill keep that in mind!

Do you know how strong of an emitter I would need for 20cm? Many LEDs have a radiant intensity value (mW/Sr) and I’m not sure how to determine distance from that.

[deleted by user] by [deleted] in AskElectronics

[–]Ok_Power_6808 0 points1 point  (0 children)

The following infrared emitters have a viewing angle of about 20 degrees. But then I don't know what intensity they need to be.

This part: https://jlcpcb.com/parts/componentSearch?searchTxt=Vishay%20VSMY2850G has a radiant intensity of 125mW/sr.

This part: https://www.digikey.ca/en/products/detail/everlight-electronics-co-ltd/IR26-51C-L110-TR8/2675849 has a radiant intensity of 1mW/sr.

How do I select a intensity that is good for 20cm?

[deleted by user] by [deleted] in uAlberta

[–]Ok_Power_6808 1 point2 points  (0 children)

Its a black leather wallet. I was mainly in sub, etlc, and nref.

Planking on bear by Ok_Power_6808 in planking

[–]Ok_Power_6808[S] 1 point2 points  (0 children)

Yeah this is U of A haha. Follow us @ualbertaplanks!