Wltoys V666-Altitude testing-with my Diy Tx Rx 2.4ghz Antenna
Using RG58 for DIY Omnidirectional Biquad Antenna for Tx ( transmitter ) + double antenna for Rx (receiver) + using 5pcs batteries 1.2V 2500MAH for transmitter + 7.4v 1500mah for quadcopter.
![ESC calibration APM2.8 | All motors not spinning at same time problem [SOLVED]](https://quadcoptersource.tesb1.com/wp-content/uploads/2020/07/ESC-calibration-APM2.8-All-motors-not-spinning-at-same-time-problem-SOLVED-200x137.jpg "ESC calibration APM2.8 | All motors not spinning at same time problem [SOLVED]")
