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IR LED is not working #22

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sayanee opened this issue Aug 12, 2020 · 3 comments
Closed

IR LED is not working #22

sayanee opened this issue Aug 12, 2020 · 3 comments

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@sayanee
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sayanee commented Aug 12, 2020

Because 2N222A pinout (used in breadboard) is different from BC817

2N222A

image

BC817

image

Differences

Chip PN222A BC817
Pin 1 E B
Pin 2 B E
Pin 3 C C
@sayanee
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sayanee commented Aug 12, 2020 •
edited
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Changed schematic

Before

image

After

image

@sayanee
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sayanee commented Aug 12, 2020

Change layout

@sayanee
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sayanee commented Aug 13, 2020

closed with fbd26d9

@sayanee sayanee closed this as completed Aug 13, 2020
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@sayanee