Does anyone have experience in purchasing and installing CNC controllers offered on eBay by manufacturers in China? They offer 2 & 3 axis controllers in very compact sizes, with 10" built-in LCD screens, etc. They are relatively inexpensive, and seem to offer plasma controllers specifically designed to table upgrades. Example of some if them on the site posted are:
https://www.ebay.com/itm/10-4-LCD-CN...e90e%7Ciid%3A1
or
https://www.ebay.com/itm/10-4-LCD-CN...mU8:rk:33:pf:0
Any feed-back would be appreciated. Thanks. J.