![firmware - Marlin 1.1.x on Ender 3 changing PREHEAT_1_FAN_SPEED has no effect? - 3D Printing Stack Exchange firmware - Marlin 1.1.x on Ender 3 changing PREHEAT_1_FAN_SPEED has no effect? - 3D Printing Stack Exchange](https://i.stack.imgur.com/dJh5p.png)
firmware - Marlin 1.1.x on Ender 3 changing PREHEAT_1_FAN_SPEED has no effect? - 3D Printing Stack Exchange
![Blue Arrow 64mm Ducted Sports Aircraft Marlin Fixed-wing Anti-fall Electric Remote Control Airplane Model Airplane - Rc Airplanes - AliExpress Blue Arrow 64mm Ducted Sports Aircraft Marlin Fixed-wing Anti-fall Electric Remote Control Airplane Model Airplane - Rc Airplanes - AliExpress](https://ae01.alicdn.com/kf/H91e749d847a048d5b4d6c7b86082aa0cX/Blue-Arrows-RC-Airplane-64mm-Marlin-PNP-Ducted-Fan-Jet-Sports-Aircraft-Fixed-wing-Anti-fall.jpg)
Blue Arrow 64mm Ducted Sports Aircraft Marlin Fixed-wing Anti-fall Electric Remote Control Airplane Model Airplane - Rc Airplanes - AliExpress
![Amazon.com: Ickiya MKS Gen L V2.1 3D Printer Control Board Motherboard, Open Source Marlin Support TMC2209/TMC2208/TMC2208/TFT35 V3.0/TFT35 E3/BL TOUCH/LCD12684 for Ramps 1.4 /Ramps 1.5/Ramps 1.6 3D Printer : Industrial & Scientific Amazon.com: Ickiya MKS Gen L V2.1 3D Printer Control Board Motherboard, Open Source Marlin Support TMC2209/TMC2208/TMC2208/TFT35 V3.0/TFT35 E3/BL TOUCH/LCD12684 for Ramps 1.4 /Ramps 1.5/Ramps 1.6 3D Printer : Industrial & Scientific](https://m.media-amazon.com/images/I/715mh+NjMeL._AC_UF894,1000_QL80_.jpg)