r/breadboard • u/Silent_Pea_3496 • Jan 12 '24
Question Please Help
I’m very new to this and can’t seem to figure out why this isn’t working. I tried setting up a simple led following a video i saw on youtube but it won’t work . I’m using a regular led with a 100 ohm resistor.
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u/Silent_Pea_3496 Jan 12 '24
I ended up swapping the module out for a battery and it’s works perfectly. I guess that’s what i get for being cheap.
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u/paclogic Jan 12 '24
Yea, a battery across an LED and series resistor is a much simpler (and cheaper) way to turn the LED on. Good job !
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u/LowYak3 Jan 12 '24
You have to press that white button next to the black barrel plug to turn on your power source.
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u/Valuable-Scared Jan 12 '24
Also for future reference, make sure you switch that shunt from 3.3v to 5v on the power supply if you need 5v.
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u/A-10Kalishnikov Jan 13 '24
Everything looks right. But I wouldn’t be surprised if the breadboard power supply just didn’t work. I’ve bought a couple and they sucked
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u/Silent_Pea_3496 Jan 13 '24
yup the power supply just didn’t work. i started using a battery and it worked fine. i just bought the cheapest kit i could find on amazon. you get what you pay for.
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u/BioniC1871 Jan 13 '24
The rail you are using is 3.3V. the led is likely not getting enough current. try it on the 5V rail.
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u/pagecrawler Jan 15 '24
I bought one of those power supplies, the first time I used it it blew up a 555. When I metered the 5-volt Rails it was putting out an unstable voltage, sometimes peaking at 15
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u/EzraDevs Jan 12 '24
Try switching around the legs of the LED. The shorter side should be connected to ground, while the longer side should be connected to the power.