I designed a PCB for a programming box (based on OlliW’s original schematic) for the Assan GA250 gyro flashed with OlliW’s custom firmware (see my original post about flashing your gyro here). The programming box hooks up to your gyro and enables you to tune the parameters on the field. The design is really simple, it basically has an ATMega8, four buttons, 16×2 HD44780 compatible LCD and some auxiliary stuff. The […]

The Assan GA250 is nifty little gyro for $9,99, unfortunately it is very hard (or impossible) to get it to hold the tail in aggressive maneuvers with the original firmware, it just does not have enough adjustments. Don’t worry, there is a solution; flash a custom firmware to your GA250! There are at least two custom firmwares for the GA250 that I know of, but this how-to will deal with […]