Programing BS2 Question

firealarmfreak

Hey i was using my basic stamp 2 board of education on one computer and it worked fine, recently that computer crashed and im using it on another and i constontly get "hardware communication failure. Check power supply and usb cable" when trying to download a program to the BS2. If i keep clicking "run" it eventually works but it sometimes takes a while. It works fine on the other computer so im wondering why this computer it doesnt work on since the system requirements are met on both computers. (i checked).

Also it does reconize the basic stamp on one of the ports. It just says "hardware communication failure. Check power supply and usb cable" and yes i did that and its all connected fine.

Any help would be greatly apreciated.

Mike Green

Your second computer probably needs to have the proper USB drivers installed. Unplug the USB to serial adapter and reinstall the latest driver from Parallax's website, then plug the adapter in and try again.

allanlane5

This also can be a symptom of a "FIFO" problem. Some serial ports (and USB adapters) use a FIFO to buffer up serial bytes. You want to turn FIFO off, or FIFO one byte, in order to meet the timing constraints of the BS2 programming communication algorithm.