{"id":6841,"date":"2025-06-06T22:47:40","date_gmt":"2025-06-07T02:47:40","guid":{"rendered":"https:\/\/www.mepsking.shop\/blog\/index.php?p=6841"},"modified":"2025-06-06T22:47:41","modified_gmt":"2025-06-07T02:47:41","slug":"review-speedybee-f405-aio-40a","status":"publish","type":"post","link":"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html","title":{"rendered":"Review: SpeedyBee F405 AIO 40A Flight Controller"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Specifications\" >Specifications<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Flight-Controller-FC\" >Flight Controller (FC):<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#ESC-4-in-1\" >ESC (4-in-1):<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Design-and-Quality\" >Design and Quality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Weight-and-Size\" >Weight and Size<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Key-Features\" >Key Features<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Integrated-40-A-4-in-1-ESC\" >Integrated 40 A 4-in-1 ESC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Bluetooth-Wireless-Configuration\" >Bluetooth Wireless Configuration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#USB-C-Extension-Pad\" >USB-C Extension Pad<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Dual-BEC-Outputs-External-BEC-Module\" >Dual BEC Outputs &amp; External BEC Module<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#ICM-42688P-Gyro-Barometer\" >ICM-42688P Gyro &amp; Barometer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Onboard-OSD-Ample-Blackbox-Memory\" >Onboard OSD &amp; Ample Blackbox Memory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#UARTs-Expansion\" >UARTs &amp; Expansion<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Accessories-Included\" >Accessories Included<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Areas-for-Improvement\" >Areas for Improvement<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Heatsink-Access-Soldering-Difficulty\" >Heatsink Access &amp; Soldering Difficulty<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Weight-Thickness\" >Weight &amp; Thickness<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#INAV-Support-Clarification\" >INAV Support Clarification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Blackbox-Logging-Options\" >Blackbox Logging Options<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Flight-Performance-Tuning-Notes\" >Flight Performance &amp; Tuning Notes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"#\" data-href=\"https:\/\/www.mepsking.shop\/blog\/review-speedybee-f405-aio-40a.html\/#Final-Thoughts\" >Final Thoughts<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The <strong><a href=\"https:\/\/www.mepsking.shop\/speedybee-f405-aio-40a-bluejay-255x255-3-6s-flight-controller.html\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#354fb9\" class=\"has-inline-color\">SpeedyBee F405 AIO<\/mark><\/a> <\/strong>flight controller brings a compact yet powerful solution for FPV builds ranging from 2\u2033 cinewhoops to 5\u2033 freestyle quads. In this review, I\u2019ll share my firsthand testing experience\u2014unboxing, setup, and flight performance\u2014while drawing on insights from a professional reviewer\u2019s structure to ensure a comprehensive look at what sets this board apart (and where it could improve).<\/p>\n\n\n\n<p>Looking to upgrade your FPV build? Check out our full range of <a href=\"https:\/\/www.mepsking.shop\/drone-parts\/aio\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#354fb9\" class=\"has-inline-color\">AIO flight controllers<\/mark><\/strong><\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1572\" height=\"884\" data-id=\"6843\" src=\"https:\/\/pre-statics.mepsking.com\/blog\/2025\/06\/Speedybee-F405-AIO-FC.jpg\" alt=\"Speedybee F405 AIO FC\" class=\"wp-image-6843\"\/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Specifications\"><\/span><strong>Specifications<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Flight-Controller-FC\"><\/span><strong>Flight Controller (FC):<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MCU: STM32F405 (42688P)<\/li>\n\n\n\n<li>Gyro: ICM-42688P<\/li>\n\n\n\n<li>Barometer: SPA06-003<\/li>\n\n\n\n<li>Mounting Holes: 25.5 \u00d7 25.5 mm, 2 mm diameter<\/li>\n\n\n\n<li>Dimensions: 33 \u00d7 33 \u00d7 8 mm (including heatsinks)<\/li>\n\n\n\n<li>Weight: 13.9 g (with CNC heatsinks)<\/li>\n\n\n\n<li>OS: Betaflight (default), INAV (supported)<\/li>\n\n\n\n<li>OSD: Integrated<\/li>\n\n\n\n<li>Bluetooth: 2.0 module (for wireless Betaflight configuration)<\/li>\n\n\n\n<li>USB Port: Onboard USB-C + breakout pad for external access<\/li>\n\n\n\n<li>Blackbox Flash: 8 MB (internal)<\/li>\n\n\n\n<li>Input Voltage: 3S\u20136S LiPo<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ESC-4-in-1\"><\/span><strong>ESC (4-in-1):<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuous Current: 40 A per motor<\/li>\n\n\n\n<li>Burst Current: 45 A (10 s)<\/li>\n\n\n\n<li>ESC Firmware: BlueJay JH-40 @48 kHz<\/li>\n\n\n\n<li>Protocols: DShot300 \/ DShot600 (others possible, but with caution)<\/li>\n\n\n\n<li>BEC Outputs: 5 V @ 2 A (shared with 4.5 V) and switchable external BEC (5 V\/9 V @ 2 A)<\/li>\n\n\n\n<li>Input Voltage: 3S\u20136S LiPo<\/li>\n\n\n\n<li>Current Sensor: Supported (scale = 254, offset = 0)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Design-and-Quality\"><\/span><strong>Design and Quality<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Upon unboxing, the first thing that stands out is the dual-sided aluminum heatsinks\u2014one on each side of the board. These vivid purple heatsinks not only give the <strong>SpeedyBee F405 AIO<\/strong>&nbsp;a premium look but also serve two critical purposes:<\/p>\n\n\n\n<p>\u00b7&nbsp;&nbsp;<strong>Heat Dissipation &amp; Protection:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The thick aluminum plates help keep both the FC and ESC MOSFETs cooler during sustained high-current flights.<\/li>\n\n\n\n<li>They offer physical protection, shielding the board from minor impacts and soldering mishaps.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;<strong>Aesthetics:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The signature purple finish differentiates it from more common black- or green-PCB AIOs.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1472\" height=\"828\" data-id=\"6844\" src=\"https:\/\/pre-statics.mepsking.com\/blog\/2025\/06\/SpeedyBee-F405-AIO-flight-controller-with-dual-heatsinks.jpg\" alt=\"SpeedyBee F405 AIO flight controller with dual heatsinks\" class=\"wp-image-6844\"\/><\/figure>\n<\/figure>\n\n\n\n<p>Of course, the trade-off is added thickness and weight. At 8 mm thick and nearly 14 g total, this board is heftier than many competing AIOs. For casual cinewhoops or 5\u2033 builds, that extra 3\u20134 g isn\u2019t a deal breaker. But for sub-250 g micro builds, it\u2019s worth noting.<\/p>\n\n\n\n<p>Between the heatsinks, the exposed pads are somewhat harder to locate, especially for less experienced builders. Fortunately, the quick-start guide\u2019s annotated pad diagrams are very helpful during soldering.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Weight-and-Size\"><\/span><strong>Weight and Size<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1457\" height=\"981\" data-id=\"6847\" src=\"https:\/\/pre-statics.mepsking.com\/blog\/2025\/06\/weight-of-Speedybee-F405-AIO.png\" alt=\"weight of Speedybee F405 AIO\" class=\"wp-image-6847\"\/><\/figure>\n<\/figure>\n\n\n\n<p><strong>Weight:<\/strong>&nbsp;13.9 g (FC + heatsinks) vs. ~9 g typical for similar AIO boards. The extra mass comes from the robust heatsinks.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"810\" data-id=\"6846\" src=\"https:\/\/pre-statics.mepsking.com\/blog\/2025\/06\/thickness-of-Speedybee-F405-AIO.jpg\" alt=\"thickness of Speedybee F405 AIO\" class=\"wp-image-6846\"\/><\/figure>\n<\/figure>\n\n\n\n<p><strong>Thickness:<\/strong>&nbsp;8 mm total\u2014consider frame clearance before swapping in this board. Its extra height could conflict with low-profile frames or tightly stacked electronics.<\/p>\n\n\n\n<p><strong>Mounting:<\/strong>&nbsp;Standard 25.5 \u00d7 25.5 mm holes mean it fits most 2\u2033-5\u2033 frames. Just verify your canopy\u2019s internal height to accommodate the heatsinks.<\/p>\n\n\n\n<p>In practice, I installed this board on a lightweight 3\u2033 freestyle frame and a 5\u2033 long-range build. It fit perfectly in both, so long as I planned for the extra thickness.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key-Features\"><\/span><strong>Key Features<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Integrated-40-A-4-in-1-ESC\"><\/span><strong>Integrated 40 A 4-in-1 ESC<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pre-flashed with BlueJay JH-40 firmware at 48 kHz, the ESC delivers smooth throttle response and reliable current handling up to 40 A continuous (45 A burst).<\/li>\n\n\n\n<li>Large, half-millimeter-thick solder pads on M1\u2013M4 simplify motor soldering, even for beginners. However, the corner solder pads are close to the heatsink, so using a fine-tip iron or angling your iron helps avoid bumping the heatsink fins.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bluetooth-Wireless-Configuration\"><\/span><strong>Bluetooth Wireless Configuration<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pair the onboard Bluetooth module with the SpeedyBee smartphone app to configure Betaflight settings wirelessly\u2014no laptop needed.<\/li>\n\n\n\n<li>Flashing new firmware, adjusting PID gains, and toggling motor rotation can all be done in the field, which is a huge advantage during on-site tuning sessions.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"USB-C-Extension-Pad\"><\/span><strong>USB-C Extension Pad<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The FC exposes breakout pads for an external USB-C port. In cramped cinewhoop builds, you can wire an external Type-C to a more accessible location on the frame.<\/li>\n\n\n\n<li>During my test, having the USB-C extension made quick adjustments much less fiddly when the FC was deep inside a carbon tube frame.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dual-BEC-Outputs-External-BEC-Module\"><\/span><strong>Dual BEC Outputs &amp; External BEC Module<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Onboard BEC: 5 V @ 2 A (shared with 4.5 V output) for powering receivers and small peripherals.<\/li>\n\n\n\n<li>External Switchable BEC: The included module can be soldered to VBAT and give you a 9 V @ 2 A or 5 V @ 2 A output, ideal for powering a <a href=\"https:\/\/www.mepsking.shop\/dji-o3-air-unit-vtx.html\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#354fb9\" class=\"has-inline-color\">DJI O3 Air Unit<\/mark><\/strong><\/a>, O3 Lite, or a high-draw LED strip without overloading the FC\u2019s onboard 5 V regulator.<\/li>\n\n\n\n<li>This flexibility means you can run modern digital FPV systems without adding extra converters.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ICM-42688P-Gyro-Barometer\"><\/span><strong>ICM-42688P Gyro &amp; Barometer<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The factory SP A0-6003 barometer offers more stable altitude hold in INAV or autonomous GPS modes.<\/li>\n\n\n\n<li>The ICM-42688P gyro is known for its low noise and accurate readings, benefiting precise flight control and smoother hover.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Onboard-OSD-Ample-Blackbox-Memory\"><\/span><strong>Onboard OSD &amp; Ample Blackbox Memory<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The integrated OSD displays real-time flight data in analog goggles.<\/li>\n\n\n\n<li>8 MB of Blackbox flash allows for dozens of flight logs without an SD card. During tune-ups, this made it easy to capture detailed logs and refine PID settings.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"UARTs-Expansion\"><\/span><strong>UARTs &amp; Expansion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Four full-function UARTs let you connect ExpressLRS\/Crossfire receivers, GPS modules, SmartAudio \/ IRC Tramp VTX control, and more.<\/p>\n\n\n\n<p>An I2C port is available for external compasses\u2014useful if you eventually want to run INAV or advanced GPS-assisted modes.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1522\" height=\"856\" data-id=\"6842\" src=\"https:\/\/pre-statics.mepsking.com\/blog\/2025\/06\/Aluminum-heatsinks-on-SpeedyBee-F405-AIO-for-heat-dissipation.jpg\" alt=\"Aluminum heatsinks on SpeedyBee F405 AIO for heat dissipation\" class=\"wp-image-6842\"\/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Accessories-Included\"><\/span><strong>Accessories Included<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>SpeedyBee packages this AIO with several handy add-ons:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>USB-C Extension Board &amp; Cable<\/strong><strong>&nbsp;&#8211; <\/strong>Makes USB port access easier in tight builds.<\/li>\n\n\n\n<li><strong>LED Strip Power Distribution Board<\/strong><strong>&nbsp;&#8211; <\/strong>Simplifies soldering multiple WS2812 LED strips by breaking out a single data pad into four pads.<\/li>\n\n\n\n<li><strong>External BEC Module<\/strong><strong>&nbsp;&#8211; <\/strong>Switch between 5 V and 9 V output; connect to VBAT for stable power to VTX or high-draw peripherals.<\/li>\n\n\n\n<li><strong>Soldering Practice Board<\/strong><strong>&nbsp;&#8211; <\/strong>A neat idea for newcomers\u2014practice soldering on a replica pad layout before working on the actual FC.<\/li>\n\n\n\n<li><strong>Connection Accessories<\/strong><strong>&nbsp;&#8211; <\/strong>Heat-shrink tubing, silicone grommets, extra screws, a QR-coded quick-start guide, and a set of vibration-damping spacers.<\/li>\n<\/ul>\n\n\n\n<p>While none of these are mandatory for basic operation, they streamline setup and add flexibility. For example, I used the LED breakout board to power my 1 m LED strip without worrying about drawing too much current from the FC\u2019s onboard BEC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Areas-for-Improvement\"><\/span><strong>Areas for Improvement<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Heatsink-Access-Soldering-Difficulty\"><\/span><strong>Heatsink Access &amp; Soldering Difficulty<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The glued-on heatsinks can obstruct several pads (e.g., some UART or motor pads near the edges). Users with thicker soldering irons may find it tricky to reach these pads without special angles or a finer tip.<\/p>\n\n\n\n<p>It would be helpful if SpeedyBee offered a heatsink-free version or allowed easy detachment (e.g., via small screws) for weight-conscious builds.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Weight-Thickness\"><\/span><strong>Weight &amp; Thickness<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>At nearly 14 g, the <strong>SpeedyBee F405 AIO<\/strong>&nbsp;is heavier than many competing boards (~9 g). For cinewhoops or 5\u2033 quads, this extra mass is negligible. However, if you\u2019re targeting sub-250 g micro builds or very tight builds, consider the added weight and 8 mm profile.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"INAV-Support-Clarification\"><\/span><strong>INAV Support Clarification<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>While the specs claim INAV support, I couldn\u2019t find an official INAV target in the current firmware flasher. INAV users may need to wait for a dedicated target or flash via raw BIN files (with added complexity).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Blackbox-Logging-Options\"><\/span><strong>Blackbox Logging Options<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Although there\u2019s 8 MB internal Flash, there\u2019s no microSD slot. If you record many Blackbox logs in a single session, you might need to offload logs frequently. An SD slot option could benefit heavy tuners.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Flight-Performance-Tuning-Notes\"><\/span><strong>Flight Performance &amp; Tuning Notes<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>After mounting the <strong>SpeedyBee F405 AIO<\/strong>&nbsp;on a 3\u2033 freestyle quad (500 g all-up weight) and a lightweight 5\u2033 long-range frame (700 g all-up weight), these observations stood out:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Arming &amp; Throttle Response:<\/strong>&nbsp;Smooth and consistent. No unexpected motor desyncs, thanks to the BlueJay firmware running at 48 kHz.<\/li>\n\n\n\n<li><strong>PID Tuning:<\/strong>&nbsp;With the ICM-42688P gyro\u2019s low-noise readings, I achieved crisp roll and pitch response in Betaflight. Altitude hold in INAV was more stable than other AIOs I\u2019ve tested.<\/li>\n\n\n\n<li><strong>ESC Heat:<\/strong>&nbsp;Even after several 3-minute freestyle sessions on 5\u2033 builds, the purple heatsinks stayed relatively cool to the touch. I never saw ESC overheat warnings.<\/li>\n\n\n\n<li><strong>Connectivity:<\/strong>\u00a0Using the SpeedyBee app over Bluetooth, I swapped motor rotation and adjusted filter settings mid-session without connecting a laptop\u2014immensely convenient when racing or filming on location.<\/li>\n\n\n\n<li><strong>Powering a DJI O3 Air Unit:<\/strong>&nbsp;Soldering the external BEC and wiring directly into the DJI O3 was foolproof\u2014no voltage mismatches, and video feed remained stable even under full throttle.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final-Thoughts\"><\/span><strong>Final Thoughts<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The <strong>SpeedyBee F405 AIO 40A<\/strong>\u00a0flight controller offers an outstanding blend of performance, convenience, and build quality for its $55.99 price point. Its standout features\u2014dual-sided heatsinks, reliable 40 A ESC, Bluetooth configuration, and dual BEC outputs\u2014make it a top contender for cinewhoop and 5\u2033 freestyle builds.<\/p>\n\n\n\n<p><strong>Pros:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Robust dual-sided aluminum heatsinks for excellent cooling and crash protection<\/li>\n\n\n\n<li>40 A ESC with BlueJay firmware (48 kHz), delivering smooth motor performance<\/li>\n\n\n\n<li>Wireless Betaflight configuration via Bluetooth + SpeedyBee app (no laptop needed)<\/li>\n\n\n\n<li>External USB-C breakout makes in-frame adjustments hassle-free<\/li>\n\n\n\n<li>Dual 5 V\/9 V BEC outputs (onboard + external module) power modern VTXs and accessories<\/li>\n\n\n\n<li>ICM-42688P gyro and SPA06-003 barometer for stable flight and altitude hold<\/li>\n\n\n\n<li>Ample accessories (LED breakout, practice board, screws, grommets)<\/li>\n<\/ul>\n\n\n\n<p><strong>Cons:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Added thickness (8 mm) and weight (~14 g) due to heatsinks\u2014may not suit ultra-light builds<\/li>\n\n\n\n<li>Heatsinks glued on, making pad access and troubleshooting trickier<\/li>\n\n\n\n<li>INAV support is not fully smooth yet (no official target in flasher)<\/li>\n\n\n\n<li>No microSD slot for external Blackbox logging<\/li>\n<\/ul>\n\n\n\n<p>If you\u2019re building a cinewhoop or a standard 5\u2033 quad and want a user-friendly, fully featured AIO flight controller, the <strong>SpeedyBee F405 AIO<\/strong>\u00a0is a hard board to beat at this price. Just be mindful of its extra thickness and weight, and prepare your soldering setup (fine-tip iron or angled techniques) to navigate around the heatsink edges. Overall, the F405 AIO strikes a great balance between convenience, reliability, and performance, worthy of any serious FPV pilot\u2019s consideration.<\/p>\n\n\n\n<p>Buy the <strong><a href=\"https:\/\/www.mepsking.shop\/speedybee-f405-aio-40a-bluejay-255x255-3-6s-flight-controller.html\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#354fb9\" class=\"has-inline-color\">SpeedyBee F405 AIO 40A<\/mark><\/a><\/strong> now at MEPSKING and take your build to the next level.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction The SpeedyBee F405 AIO flight controller brings a compact yet powerful solution for FPV builds ranging from 2\u2033 cinewhoops to 5\u2033 freestyle quads. In this review, I\u2019ll share my firsthand testing experience\u2014unboxing, setup, and flight performance\u2014while drawing on insights from a professional reviewer\u2019s structure to ensure a comprehensive look at what sets this board apart (and where it could improve). Looking to upgrade your FPV build? Check out our full range of AIO flight controllers. Specifications Flight Controller (FC): ESC (4-in-1): Design and Quality Upon unboxing, the first thing that stands out is the dual-sided aluminum heatsinks\u2014one on each side of the board. These vivid purple heatsinks not only give the SpeedyBee F405 AIO&nbsp;a premium look but also serve two critical purposes: \u00b7&nbsp;&nbsp;Heat Dissipation &amp; Protection: \u00b7&nbsp;&nbsp;Aesthetics: Of course, the trade-off is added thickness and weight. At 8 mm thick and nearly 14 g total, this board is heftier than many competing AIOs. For casual cinewhoops or 5\u2033 builds, that extra 3\u20134 g isn\u2019t a deal breaker. But for sub-250 g micro builds, it\u2019s worth noting. Between the heatsinks, the exposed pads are somewhat harder to locate, especially for less experienced builders. Fortunately, the quick-start guide\u2019s annotated pad diagrams are very helpful during soldering. Weight and Size Weight:&nbsp;13.9 g (FC + heatsinks) vs. ~9 g typical for similar AIO boards. The extra mass comes from the robust heatsinks. Thickness:&nbsp;8 mm total\u2014consider frame clearance before swapping in this board. Its extra height could conflict with low-profile frames or tightly stacked electronics. Mounting:&nbsp;Standard 25.5 \u00d7 25.5 mm holes mean it fits<\/p>\n","protected":false},"author":12,"featured_media":6845,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[431,434,433],"tags":[456,73,74],"collection":[],"class_list":["post-6841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-beginner-guide","category-parts","category-reviews","tag-5-inch","tag-esc","tag-flight-controller"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SpeedyBee F405 AIO Review \u2013 Reliable Power for FPV Builds<\/title>\n<meta name=\"description\" content=\"In this SpeedyBee F405 AIO review, discover how this simple, powerful AIO can boost FPV performance and make your FPV drone build easier.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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