![\"IMG_8972.JPG\"](\"http:\/\/www.corbinstreehouse.com\/blog\/wp-content\/uploads\/2012\/11\/IMG_8972.jpg\")
<\/a><\/p>\nNotice there are 5 buttons below; those will be wired up to the arduino to control more functions, but for now, the 1.0 release seems to be working well enough. The display shows errors\/warnings at the top when they occur (and given that I have a dying cell, I see them). For example, here it is showing what happens when it can’t find the BMS (ignore the lower red line\u2026that was testing):<\/p>\n The display housing is 1\/8″ aluminum. I used Sketchup to accurately place all the holes I wanted. The Sketchup file (LCD Layout.skp<\/a>) looks like this:<\/p>\n \n I measured for 5 buttons based on a little prototype board, and the 2.2″ TFT display from Adafruit:<\/p>\n \n I machined out the holes with my mill:<\/p>\n \n and bent the 90 degree back with a cheap-o Harbor freight brake:<\/p>\n \n The backside has an indentation to let the buttons stick out, but the bend messed up my clearance:<\/p>\n I solved this by machining out the bottom area more that let the 5 buttons fit on:<\/p>\n They are held in place by some small bolts that I drilled and tapped into place. I actually had to turn the head of the bolts to get them to not hold the buttons up too tight, which prevents them from freely clicking. I may have to tweak how this is done\u2026since the buttons are intended to have a 5v source on one side, which I don’t want to be grounded via the bolts:<\/p>\n \n The display mounts perfectly, as my holes lined up dead on:<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a> \\<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n