Project #MicroLongRange [3 Inch version]

thingiverse

__ABOUT THE DESIGN__ This design is a 3-inch version of my [MicroLongRange](https://www.thingiverse.com/thing:4054381) 4-inch frame. I decided to put it in a separate post since its not only shorter arms but also new bottom plate to adapt the angle of the dead cat layout. Just like the 4-inch version this frame configuration allows you to easily fit an impressive amount of feature in your sub-250 setup: * GPS for speed, location, return home etc. * 4K video footage with no props in view * And independent buzzer for easier post-crash recovery even if the battery is ejected * 3+ miles of range with and 800mW VTX __FRAME SPEC__ - Max. Prop Size: 3 Inch - Frame weight: ~ 32 g - Front Stack: 16x16 only - Rear Stack: 20x20 only - Cam mounts: 19mm Micro - Motor Mounts: 9-12mm 4-hole - Standoffs: M2x25 and M2x20 __BUILD RECOMMENDATIONS__ The build recommendations for the 3-inch version are basically identical to the 4-inch version except for the propellers. I recommend getting the [HQ T4x2.5](https://www.banggood.com/custlink/D3GvAHR392) since they are really smooth and efficient. * ESC/FC stack: I recommend getting the [HGLRC 16x16](https://www.banggood.com/custlink/mDDmn3NftF) stack since it has two main advantages: First a cable connector instead of fragile pins and second two fully accessible UARTS (RX and TX). * FPV Antenna: I had the best results using a full-sized [Lumenier Axii](https://www.banggood.com/custlink/mmDGstrDvN) but you can also go for the [Nano version](https://www.banggood.com/custlink/mK3Kn5rGGj) if you want to shave off a few extra grams * Buzzer: An independent buzzer is absolutely crucial on a micro long range build. Good luck finding such a small quad without it! My recommendation is the [Full Speed Luck Box](https://www.banggood.com/custlink/vKvvsVRmlE). Not the loudest at 90dB but incredibly light and small. * GPS: The GPS mount is designed for the [BN-180 GPS](https://www.banggood.com/custlink/DDKDnVRGaF) __CARBON PARTS SOURCES__ * **North America & Global:** Send an email to Nick from [CNC Madness](http://www.cncmadness.com/contact-us.html) with a link to the post. They will know what to do and can also add the required M2 standoffs and screws. Prices should be similar the $24 the 4-inch version costs. * **Germany / Europe:** [AHLtec](https://www.ahltec.de/shop/de/info/Unser-Fraesservice.html) Please be aware that you will have to email them in German. Hit me up if you need some help ;-) **Disclaimer:** I'm not directly affiliated to the the above third party CNC service providers. These are recommendations only and I cannot guarantee prices, quality and shipping times. __REQUIRED HARDWARE__ * 6x M2 [20mm Standoff](https://www.banggood.com/custlink/DGvmnVET7S) * 2x M2 [25mm Standoff](https://www.banggood.com/custlink/DGvmnVET7S) * 4x [M2 Nut](https://www.banggood.com/custlink/3G3vsVy7wb) * 4x M2x8 Steel screw * 12x M2x5 Steel screw * 4x M2x12 Steel screw