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Flash the DJI 30A OPTO esc with BLHeli (and get rid of that annoying 8kHz high pitch sound) - YouTube
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Dji 30a Opto Brushless Esc (30hz - 450hz) For Dji Flame Wheel F450 F550 & Wookong-m & Naza-m - Parts & Accs - AliExpress
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Original Dji Brand Esc-30a Opto Brushless Speed Controller,f450 F550 Multicopter Dji Parts Accessories Free Shipping - Parts & Accs - AliExpress
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DJI E300 ESC 18a Opto 11.1-14.6v 3-4s Lipo for Flame Wheel F330/f450 Multi-rotor for sale online | eBay
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30A OPTO Brushless Remplacement ESC Contrôleur de Vitesse Electronique pour DJI roue de Flamme F330 F450 F550 - Cdiscount Jeux - Jouets
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