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I am not sure about you 6 buttons.
If you can highlight or mark one item in the list, you need 2 buttons to scroll and one to select.
confirm could be the same as select, just pressed again.
back to parent is just selecting directory ".."
reset to current? what is that supposed to do?
At this point, I am beginning to think that I should supply the machine code via USB from a PC as compared to obtaining the machine code from a microSD card.
I use a device with a wheel button. Love it.
Rayman has an LCD interface module to connect to the Prop
You cannot go wrong learning how to put graphics on an LCD.
During my research, I discovered that the laser must be held firmly, to provide any kind of decent output. So instead of going with single row V-groove bearings for the laser carriage, I decided to go with double row radial ball bearings, because I certainly want as little slop as possible for this carriage. To make a long story short, there will be a total of eight bearings for the carriage, with each bearing having a 1/4" ID, a 5/8" OD, and a 0.196" width, and two bearing sets, along with a spacer for each set, will be pressed into (4) steel V-groove sleeves, which I am currently turning on a wood lathe. The OD of each sleeve will be 7/8", the width of each sleeve will be 0.4545", and each sleeve will have an 80 degree V-groove cut across the center.
In the image below, you will see a side view of my carriage assembly, with the V-groove sleeves being cross sectioned. The laser housing, the laser module clamp, and the carriage are already made, and all I need to finish the carriage is those v-groove sleeves. Making those steel v-groove sleeves on a wood lathe is a real treat. So much fun, I can hardly control my excitement
After looking for a flat piece of sheet stock to use as the bed plate, I could not find anything that was even close to acceptable, unless I was to build a rigid frame, to pull out warpage, which I may do...