gShield v5 Notes
There are almost none (other than the lower price). The v5 provides some additional options for selecting logic power for compatibility with a large array of Arduinos and Arduino clones. This does not affect the motor power, which is the same on all gShield versions (v1 - v5).
The v5 is compatible with R3 Unos and other R3 Arduinos, including. Most Arduinos shipped in the last year or so are R3s. If you have an older Arduino or a clone you might need to change the logic power jumper.
##v5 Logic Power Jumper Options
The power selection section is the J11 jumper right under the left-most motor connector in the picture above. The power section has 3 positions:
- Left Position (Factory jumper position) - connects to IOREF
- Middle Position - connects to 3.3 volts
- Right Position - connects to 5 volts
###Setting Voltage Position
-
Left Position (Factory jumper position) In the factory shipped position shown above the board power is provided from the IOREF pin of the Arduino. This is what you want if the Arduino has an R3 pinout:
You can tell if you have an R3 pinout if the power connector has all 10 pins. Earlier revisions (R2) have 8 pin power connectors. In this case the gShield has 2 pins hanging in mid-air. THis is OK. See "3.3v Power", below