Control 256 relays! Seeing is believing!
Need to control hundreds of relays with your Arduino, ESP8266, Pi, PC or Mac and activate them simultaneously within < 1 ms time window?
Project tutorial by Christian
Use the IO Expander and accessories to connect OLED screens and I2C sensors over a 100ft away.
Intelligently irrigate your yard or garden with dynamic water cycles, rain detection, sunrise detection, and when it's warm enough.
Intelligently reduce the moisture in your basement/crawlspace to help control mildew growth and lower your heating/cooling bill.
Use the IO Expander and Relay Expander with the Arduino to control up to 65,280 relays!
Great job guys! It's great to see young people building electronics. You will become future engineers. Keep up the good work!
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!
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.
Or connect with your social account:
New here? Create an account