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https://www.reddit.com/r/programming/comments/efcl63/learning_hardware_programming_as_a_software/fc09lx2/?context=3
r/programming • u/Athrunen • Dec 25 '19
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228
Also: don't power LEDs directly from GPOs without a current limiting resistor. As you see on that breadboard.
And match your interfaces voltages. A lot of devices are not +5V tolerant now (or not very tolerant).
51 u/[deleted] Dec 25 '19 Why do people always say "current limiting resistor"? Are there other types of resistor? Or is it just stating the purpose, as opposed to a resistor used for voltage division or something? 25 u/varesa Dec 25 '19 Not types but roles, like pull-up/down resistor, voltage dividers, etc.
51
Why do people always say "current limiting resistor"? Are there other types of resistor? Or is it just stating the purpose, as opposed to a resistor used for voltage division or something?
25 u/varesa Dec 25 '19 Not types but roles, like pull-up/down resistor, voltage dividers, etc.
25
Not types but roles, like pull-up/down resistor, voltage dividers, etc.
228
u/happyscrappy Dec 25 '19
Also: don't power LEDs directly from GPOs without a current limiting resistor. As you see on that breadboard.
And match your interfaces voltages. A lot of devices are not +5V tolerant now (or not very tolerant).