I have a ton of ESP8266 boards kicking around. Some I’m using for BLE to connect to temperature sensors which has been working great.
I now also want to build an IR Remote with the ESP8266. Just wondering if there is any specific IR emitter/receiver that works best? I had a quick look and there appear to be a ton of various options, not sure if there are any caveats.
Get a TSOP38238 from a reputable retailer - not just Aliexpress.
Same with your 950nm IR LED, buy from the same source and you should avoid any issues.
You’ll need a suitable resistor for your LED - they typically have 1.5V-2V forward voltage so depending on the max current you should go with a value between 75ohms to 100ohms I think.