this is the world’s smallest open-source unmanned aerial vehicle four-axis aircraft.
core: cortex-m4. frequency: 168mhz. memory: flash 1mb, sram 192kb. power supply: lithium battery 3.7-4.2v.charging 100ma/500ma/980ma.
bluetooth: support ios 7.1 +/android 4.4 +. maximum time of flight: 7 minutes.
new battery charging time: 40 minutes. maximum load: 15 grams. size: 92 * 92 * 29mm (motor to motor). weight: 27 grams.