I have flashed my Geeklink IR Blaster with Tasmota, change IO for the template, and everything works, so it seems. If I point my AC remove towards it, and click a button, I get a unique value per key, so it is defiantly working.
15:44:19 MQT: tele/Tasmo_13_IRblast/RESULT = {“Time”:“2020-06-06T15:44:19”,“IrReceived”:{“Protocol”:“NEC”,“Bits”:32,“Data”:“0x01FE6996”}}
Now I wanted to test if I could send the command directly from the Tasmota console, before dumping it into HA.
I have read a couple of pages, and I am getting some different results, maybe based on the age of some of threads.
I tried this, but nothing happens.
{“Irsend”:{“Protocol”:“NEC”,“Bits”:32,“Data”:“0x01FE39C6”}
So I must be doing it wrong, unless I cant test from the console.
So I went to HA, and into the developer tap, found MQTT (Im using Mosquitto Broker, and is working with my Sonoff devices already).
I gave it the topic “tele/Tasmo_13_IRblast” and then the payload
{“Irsend”:{“Protocol”:“NEC”,“Bits”:32,“Data”:“0x01FE39C6”}
But nothng 
Once I have it working, I cant seem wrap my head around how to add it to the configuration files, as all I have done so far have been adding simple switches.