My LCD display is pretty easy to read, actually easier to read than reading the car radio’s LCD screen. The LCD I use is the HD44780 type. I don’t see any MISO MOSI pins and I didn’t have to select it by address. So, at least, I am pretty sure it is not I2C.
But that’s why I built in the traffic lights- so I wouldn’t HAVE to read the LCD to detect general health of the hearth. Besides, I wanted some practice with Eagle CAD and laser printing for making PCBoards.
A lot of my stuff comes from Adafruit, by the way
I use the data a lot because I am still in the learning process. Every run I have made to date has ended for some not-too-well-understood reason, so my goal is to understand everything that could get in my way of running for as long as I please.
The data most useful:
Above and below grate temperatures, which always drop as the run proceeds
Below grate suction
Pressure drop across the filter system
And, when I hook it up. O2 sensing, I want to use that to tell me ahead of time when the gas quality is changing.
In my case, I now know I HAVE to have a grate shaker. And I will switch to a “drizzle” feed technique for fuel (if it ever gets above zero up here)
This drizzle technique is being actively discussed on the Yahoo group.
Of course all this relates to my Chinese JXQ-10 gasifier only.