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LED sign control board replaced with Arduino

Wednesday, January 9th, 2013

Bob picked up a huge LED matrix sign on eBay that has power supply problems. After fixing the power supply, he decided to replace the controler boards with an Arduino. Via Hacked Gadgets.

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Posted in LEDs, repair, tutorials | 1 Comment »

Recent Comments

  • Bob: Jambalaya rocks.
  • KH: I should point out something... well, lead acid car batteries are designed to be well-charged all the time. The plates (which are patterned and thin)...
  • David Haile: You are a smart person and absolutely correct. That kind of current needs a lead acid car battery behind it. Still, it does have its...
  • KH: The solution discussed in the linked article is wrong. It's a largish Lipo (2500mAh) and he thinks 77uA is acceptable... ha ha ha ha ha....
  • Dave: I never had to opportunity to learn or use this stuff when I was in college (I'm sooo old that op-amps were just being developed...