I've ordered 20+ Pro Mini clones from here. Just ordered 3 more today for a project, under $3 can't complain. And these have proper upload. Have tried other Pro Mini clones that need the reset button manually pressed for proper upload.
You don't "control" the hexadecimals. For your own words you need to record them on your PC, then use the encoder included with the talkie library, then manually convert to hexadecimals and use that. It is NOT an easy process. The better way of using your own words is to get a dedicated speech module like these: Ginsing , Speakjet voice sheild or an eMic2.
I have made a talking clock/thermometer with the Talkie library, it works well. I went off of this code . The library is quite simple, I suggest working off of the Vocab_US_Clock example, it's pretty straight forward. Include the words you want to use, and call them in your sketch using:
voice.say(the word you want here);
As for the 0x values. The words are stored in hexadecimal format, nothing for you to play around with or the words won't work.
It's not so much the temp of the heatsink to be concerned with, it's the heat build up at the junction of the LED and the heatsink. You said you have an " active processor cooler" what temp is it set to activate at? Is it liquid or passive? Just curious.
Fungus says he runs his eBay LEDs at 50-60%, I also follow that rule. Specs I found on these 100w RGB chips says: Red: 18-24V or Red: 25-28V Green: 30-36V Blue: 30-36V DC Forward Currect (IF) : 1000mA So run them at 500mA and they will have a lower forward voltage. Running LEDs at their max rated forward current will produce unwanted behavior and heat, doing this on a high powered chip will produce much more visible problems. Also I would recommend a fan on the heatsink if you plan on having this on for extended periods of time.