Note that the current firmware does not require a microSD card — if you happen to put in one, take it out and try again. The microSD card feature is useful if you want all Javascript files to be served locally on the controller. It is also useful, for the future, to store more programs and logging data. When using it, the card has to be 2GB or less, and you need to format it to FAT16. If not, the controller will get stuck at the ‘Detecting uSD card’ message. For now you probably don’t need it, so just take it out and try again.