Could be hardware. Please post schematics showing all connections, the pin names, the powering of all devices.
All according to: How to get the best out of this forum - Using Arduino / IDE 1.x - Arduino Forum
Could be hardware. Please post schematics showing all connections, the pin names, the powering of all devices.
All according to: How to get the best out of this forum - Using Arduino / IDE 1.x - Arduino Forum