256 Relays!

by Christian

  • 17,936 views
  • 16 comments
  • 58 respects

Control/Synchronize Hundreds of Relays at the Same Time

Project tutorial by Christian

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Connect OLED Screens and I2C Sensors Over 100ft Away!

Project tutorial by Christian

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  • 1 comment
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Toolbox 3


Smart Irrigation Controller

Project tutorial by Christian

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  • 14 comments
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Basement/Crawlspace Ventilation System

Project tutorial by Christian

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Control Up to 65,280 Relays with Your Arduino!

Project tutorial by Christian

  • 45,275 views
  • 15 comments
  • 88 respects

  • Smart irrigation system 3 months ago

    Great job guys! It's great to see young people building electronics. You will become future engineers. Keep up the good work!

  • 256 Relays! 4 months ago

    Do you have a video that you can share that uses the WS2811 chips with 768 relays? The link you gave is with LED's and only 32 relays. It was a major pain to get more than 16 shifter chips to work over wire interconnects having to fight capacitance issues. I'm interested in how you solved that problem. If you have two synchronous circuits A and B, where A feeds in B, and both share the same clock then you have the issue if total Tpd(A) < Th(B) where Tpd is the combinational delay of the clock. At 5V typical propagation delay is 19ns, minimum propagation delay is 3ns and required hold time is 2ns. I've been in a cave too long, and I'm not familiar with Sin Shimozono? Thanks!

  • Control Up to 65,280 Relays with Your Arduino! 4 months ago

    Alright another KISS engineer! This is my motto I live by! Sensors are cheap, tether them and when they go bad or drift due to contamination (i.e. humidity) throw them away and replace them.

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