Sunday, 10 August 2014

APM 2.5 / 2.6 voltage regulator fix

Two of my APM boards have blown their 3.3V regulators. It is a common problem with APM boards and might be connected to plugging in the USB cable whilst the board is powered by the flight battery. There is a lengthy discussion thread on DIYdrones here: http://diydrones.com/forum/topics/ac3-1-rc5-spi-speed-problem?commentId=705844%3AComment%3A1457284

I got this for a replacement: http://www.coolcomponents.co.uk/voltage-regulator-3-3v.html
A little bit overkill, but it was cheap and available around the corner.

Here is an excellent video showing how it needs to be installed:
https://www.youtube.com/watch?v=5Ur_s2inGHY&list=UUlCZWv9dKygCflwty9_s8Sw
It is in German. A little summary:

  • remove the blown regulator. For me a combination of soldering iron and brute force did it.
  • add three short (few cm) servo wires to the regulator and wrap in heatshrink
  • solder the output to the capacitors on the APM board
  • solder ground and +5V to the side of the APM board. Labels on the underwise

Now my dead APMs are alive again! For less then two pounds!


at
Labels: , , ,

1 comment:

  1. Anonymous30 November 2020 at 19:33

    Here is Mr Benjamin contact Email details, 247officedept@gmail.com. /  Or Whatsapp +1 989-394-3740 that helped me with loan of 90,000.00 Euros to startup my business and I'm very grateful,It was really hard on me here trying to make a way as a single mother things hasn't be easy with me but with the help of Mr Benjamin put smile on my face as i watch my business growing stronger and expanding as well.I know you may be surprised why I put things like this here but I really have to express my gratitude so anyone seeking financial help or going through hardship with their business or want to start a business project can see this and have hope of getting out of the hardship..Thank You.


    ReplyDelete

Subscribe to: Post Comments (Atom)