This is where solid-state relays (SSRs) are worth considering ... it at higher currents or extended periods of time. My mains wiring does not include an electrical ground. This is not due to ...
But what if all you have on hand is an ESP8266? [TechColab] needed to control a solenoid valve with a short pulse via a solid-state relay (SSR) but found that the trusty 555 timer was tricky to ...
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