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Krista K's user avatar
Krista K's user avatar
Krista K's user avatar
Krista K
  • Member for 10 years, 10 months
  • Last seen more than 1 year ago
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Stable frequency generation
awarded
 Student
asked
Set PWM by period? And have it variable?
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Set PWM by period? And have it variable?
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 Enlightened
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 Nice Answer
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 Caucus
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 Nice Answer
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 Yearling
comment
If I have a group of Arduinos connected via I2C, can one Arduino cause the rest to freeze?
Sounds like the unpowered node pulled down the I2C +5V. I've also had I2C devices not work when the arduino is powered by 5V plug (but does with USB power).
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Reading quadrature encoder
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How to protect my arduino, while hotplugging its power supply and other related electronics
Also consider a Ruggedino as a 2nd tier kind of protection. While it's possible it would survive, I'd suggest making the design improvements first. ruggedcircuits.com/microcontroller-boards/…
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 Yearling
awarded
 Commentator
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Arduino Digital Input Causing Output Problems
Sounds like a pull-up / pull-down resistor problem. You're leaving the pin floating instead of giving it the physical ability to go to 0V.
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Arduino Mega's 4 Serial Ports?
Don't overlook the ChipKIT uC32. It roughly compares to the Mega at a glance, but has 2x the RAM and 10x the clock speed. Plus tons of I/O.
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Arduino Shield Pin Conflict
I blather on about something similar here: arduino.stackexchange.com/questions/3892/…
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Motor shield and wireless transceiver compete for same pins
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Stacking shields without headers
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2.4" TFT LCD Shield isn't working on Arduino Mega
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