Hardware question here - we are trying to integrate a Mini210 into a new geophysical instrument. The SBC itself must be mounted on a backpack, but we need a display (touchscreen) to be wrist mounted. Not only do we need the display waterproof (another problem!), but we need to run a 1 meter (3 foot) cable from the backpack to the LCD. Any suggestions on this? The standard 40-pin connectors are far too short. Thanks!
Your problem is not short 40 pin tft cable. Your problems are interference and many other "sh*t" in ether. Look for transceiver maybe something like LVDS or maybe VGA. 1m VGA should be resonable solution, cable with some ferrite of course. Touch by "normal" interface i2c, if some ghost touch will appear then make i2c to rs485 on some small board, spi the same solution. Remember even if u make it with VGA and something wrong will start then u have to look for differential type data transfer, so first solution RGB->LVDS. Oh , I almost forgot i2c can be in very simple way made as differential signal. Waterproof is not a problem put display in waterproof box and let cables by some muffs. Touchscreen hmm , you have to give information how big resolution for touch u need - less resolution less problem, Big resolution expensive problem. Good luck.