{"id":3572,"date":"2022-06-14T18:58:28","date_gmt":"2022-06-14T17:58:28","guid":{"rendered":"https:\/\/www.goodiesrc.com\/?p=3572"},"modified":"2023-01-29T12:29:07","modified_gmt":"2023-01-29T11:29:07","slug":"flight-controller-not-getting-power-from-battery","status":"publish","type":"post","link":"https:\/\/www.goodiesrc.com\/flight-controller-not-getting-power-from-battery\/","title":{"rendered":"Flight Controller Not Getting Power From Battery? Explained!"},"content":{"rendered":"\n

When the battery is plugged in, the flight controller isn’t getting any power? Don’t worry; you are exactly in the right place! I did full research on this topic, and here’s what I found:<\/p>\n\n\n\n

Flight controllers (FCs) don’t get power from the battery, most likely because the voltage regulators or some circuit parts could have burned. However, the issue can also be due to the speed controllers’ lack of an in-built battery eliminator circuit.<\/strong><\/p>\n\n\n\n

Read on to learn the reasons in detail and what you can do to fix the issue!<\/p>\n\n\n\n

\"Flight
Man holding a drone controller<\/figcaption><\/figure>\n\n\n\n

Flight Controller Not Getting Power From Battery: Possible Causes & What To Do<\/h2>\n\n\n\n

#1. Voltage Regulator Is Burned<\/h3>\n\n\n\n

There’s no sign of turning on when you plug in the flight controller to the flight batteries. However, if you plug your FC into the computer, it does show the signs of turning on. And if that’s the case, you have likely burned the voltage regulator<\/strong> in your Flight controller.<\/p>\n\n\n\n

The function of the voltage regulator is to regulate the power from the battery and reduce it to 5V. This is done to appropriately power the accessories on the flight controller.<\/em><\/p>\n\n\n\n

Also, there are other regulators like 3.3V powering the MCU. What is an MCU? It is the biggest square chip you can find on the board.<\/p>\n\n\n\n

What To Do?<\/span> <\/strong>So if the voltage regulators have burned and hindering the power supply to the FC, you must remove them from the board. <\/p>\n\n\n\n

And then, you can use an external 5V BEC to power the flight controller. Does your ESC have a 5V BEC? If thets the case, you can also use that for this purpose. <\/p>\n\n\n\n

Note that if you are trying to use an external BEC<\/strong>, ensure it is at least rated for 2A.<\/p>\n\n\n\n

What is a BEC?<\/strong> BEC stands for Battery Eliminator Circuit, and it is simply an electronic voltage regulator. It is mainly used in radio-controlled items in which separate voltage is needed to power RC equipment.<\/p>\n\n\n\n

How To Know If The Voltage Regulator Has Burned?<\/strong><\/h4>\n\n\n\n

First things first, you need to grab a multimeter. Don\u2019t have one? See a selection here <\/a>on Amazon.<\/strong><\/p>\n\n\n\n

I use this one<\/a> by Etekcity, its ok on price and does what I need when it comes to my RC’s. I mostly use it to check for short circuits on my RC cars.<\/strong> A multimeter is a must have, especially if you have a variety of RC’s<\/strong>.<\/p><\/blockquote><\/figure>\n\n\n\n

Then, put your multimeter in continuity mode. (Basically, the beeping sign, will tell you when you can touch the two ends of the multimeter together)<\/p>\n\n\n\n

Related post: DJI Mavic Pro Won’t Connect To Controller? [Helpful Guide!]<\/a><\/strong><\/p>\n\n\n\n

Now, find the voltage regulator pads and test them to see if there’s a short, using the multimeter. If there’s no short, it is possibly a good indication that your particular voltage regulator is not burned yet.<\/p>\n\n\n\n

#2. Schottky Diode Is Burned<\/h3>\n\n\n\n

Is the Schottky Diode on your flight controller burned? Generally speaking, it is one of the most common things that gets burnt out on a flight controller. <\/p>\n\n\n\n

This diode allows two lots of five volts to come into the board and not touch each other. <\/p>\n\n\n\n

Check out my article:<\/strong> Do drones break easily? <\/a><\/strong><\/p>\n\n\n\n

For example, the voltage from the 5-volt regulator and 5 volts from the USB, so you don’t have to face any problems.<\/p>\n\n\n\n

What To Do?<\/span> <\/strong>Check to see if the diode is ok. <\/p>\n\n\n\n

To do this you will need your multimeter and set it to continuity mode. <\/strong><\/p>\n\n\n\n

You can also watch this video to learn more about how to test the diode using a multimeter: <\/p>\n\n\n\n

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