{"product":{"product_id":"B00ZR3B252","title":"XCSOURCE 5PCS 5V/9V/12V/24V 1 Channel Relay Shield Module Optocoupler for PIC AVR DSP ARM Arduino TE213","price":null,"image_url":"https://m.media-amazon.com/images/I/517j0Lns9CL._SL500_.jpg","url":"https://www.amazon.com/dp/B00ZR3B252"},"comments":[{"body":"\u0026gt;Pi with Wifi and a \r\n\r\n\u0026amp;#x200B;\r\n\r\nMy original plan included an existing ESP8266 for Internet so I won't need that any longer.  Any reason for the Zero over the 3 B+?\r\n\r\n\u0026amp;#x200B;\r\n\r\nI purchased both but would love to have someone else's opinion on the right solution here.\r\n\r\n\u0026amp;#x200B;\r\n\r\n\u0026gt;12v-capable relay HAT \r\n\r\n\u0026amp;#x200B;\r\n\r\nI haven't ever heard of a relay HAT so I'll have to google it. I bought a bunch of these for the relay:  [https://www.amazon.com/gp/product/B00ZR3B252/ref=ppx\\_yo\\_dt\\_b\\_asin\\_title\\_o05\\_s02?ie=UTF8\u0026amp;psc=1](https://www.amazon.com/gp/product/B00ZR3B252/ref=ppx_yo_dt_b_asin_title_o05_s02?ie=UTF8\u0026amp;psc=1) \r\n\r\n\u0026amp;#x200B;\r\n\r\n\u0026gt;plus a cheap USB power-bank\r\n\r\n\u0026amp;#x200B;\r\n\r\nI planned on using AC power (w/ a DC converter) to supply power to the relay and I assumed if I used a power supply module or something like that I could just grab 5v off that to power the Arduino and then the usb client would get it's power from the MCU.\r\n\r\n\u0026amp;#x200B;\r\n\r\nI've never messed with the Raspberry products so I'll probably have to re-investigate power options. One problem at a time I suppose - thank you for your advice.","subreddit_name":"microcontrollers","author":"Reddit_In_AZ"}]}