Each week I will grab a random electronic component from the vault and build a circuit - this week I look at driving a relay using an ESP32 then updating the code OTA<br /><br />More info at <a href="https://onecircuit.blogspot.com/2022/02/0000-0000-1000-1001.html" target="_blank" rel="nofollow">https://onecircuit.blogspot.com/2022/02/0000-0000-1000-1001.html</a><br /><a href="https://www.tindie.com/stores/bovineck" target="_blank" rel="nofollow">https://www.tindie.com/stores/bovineck</a><br />...<br /><a href="https://www.youtube.com/watch?v=lo_GVy9vSio" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=lo_GVy9vSio</a>