Arduino_transmitter for ELRS

This is an Arduino based RC transmitter TX. Features:

• Support ExpressLRS 2.4G external TX module
• Serial communicatin （Up to 250Hz packet rate）
• 4 analog channel
• 4 AUX channel
• M7 hall Gimbal

This firmware was tested on ELRS 1.0. It is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.