<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>sowbug</author><text>I built something like this but more special-purpose. It just switches a USB-A power source on&amp;#x2F;off. I wanted it to control my 5-volt fish-tank lights. I didn&amp;#x27;t want to use a 120VAC smart switch for each light because I prefer to use a single USB hub to power them all, and a bonus feature was being able to PWM the lights so the fish aren&amp;#x27;t freaked out when the lights suddenly turn on 100% in the morning.&lt;p&gt;I ordered PCBs from JLCPCB and components from LCSC. I think each one cost around $5 in parts, and I hand-assemble them as I need more around the house.&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;github.com&amp;#x2F;sowbug&amp;#x2F;smart-usb-switch&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;github.com&amp;#x2F;sowbug&amp;#x2F;smart-usb-switch&lt;/a&gt;&lt;p&gt;Picture: &lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;raw.githubusercontent.com&amp;#x2F;sowbug&amp;#x2F;smart-usb-switch&amp;#x2F;master&amp;#x2F;completed.jpg&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;raw.githubusercontent.com&amp;#x2F;sowbug&amp;#x2F;smart-usb-switch&amp;#x2F;ma...&lt;/a&gt;</text><parent_chain></parent_chain></comment><story><title>We made an open source ESP8266 dev board for makers</title><url>https://github.com/MaloufSleep/ME-ESP8266</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>makerboardzz</author><text>Cool - it looks like a well-designed board, although the timing is a bit unfortunate with the ESP32-S2 emerging as an ESP8266 replacement with USB.&lt;p&gt;A few questions:&lt;p&gt;* Should the relay have some sort of isolation, like an optocoupler?&lt;p&gt;* Is it FCC-certified?&lt;p&gt;* Like other people asked, any information on how the antenna was designed?&lt;p&gt;I like the old-school dome LEDs. And it&amp;#x27;s cool to see another project with a CH340 USB&amp;#x2F;USART bridge, even if they wouldn&amp;#x27;t need it with an ESP32-S2.</text><parent_chain></parent_chain></comment><story><title>We made an open source ESP8266 dev board for makers</title><url>https://github.com/MaloufSleep/ME-ESP8266</url></story>