Tricopter build Part 3 – Flashing the ESC’s

Flashing the ESC’s with SimonK firmware

Parts you’ll need in this step:

3x Blueseries 30A ESC’s

USB ASP programmer

Socket flash tool


Lazyzero multicopter flashtool

Let’s flash:

So the first thing you should do is to cut the heatshrink off. Try to cut a straight line in one of the sides so it will be easier to reassemble.

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Now read carefully. On the processor itself, there are a round circle or a “dot” you could call it, in one of the corners. That is your reference point on the ESC. Also on the socket flash tool you are going to use there are a red dot on one of the corners as well. These two should line up! Very important or else it won’t work:

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(i marked them up on the picture so you know what to look for)

Next is to plug in your USB flash tool to the computer install the necessary drivers, and open up the Multicopter flash tool by LazyZero.

Remember to unplug the small jumper on the USBasp tool. Otherwise it won’t connect to the computer.

Here is the settings you need to set in the Multicopter flash tool before putting the socket flash tool on the ESC:

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If the image is too small to see anything here is the settings:

Controller  : “Atmega 8-based brushless ESC (8kb flash)”

Firmware :

First box : “BS N-FET”

Second box : “BS N-FET V2012-09-30 by Simon Kirby”

That’s all you need to select. Now basically just connect the Socket firmware flash tool to the ESC with the right orientation and then hit the green button on the far right and wait a few seconds and it will say something like:

“AVRdude.exe finished…”

And you’re done. Now do that to the rest of the ESC’s and wait for the next step.

That’s all for now. Thank you for reading and Goodbye!


Tricopter Build Part 2 – The making of the frame

Making the frame:

What you need in this step:

Some 2,5 mm plywood plates for the main frame.

10mm*13mm arms x 3 (should be at least 50 cm’s long)

10 x M3*25mm bolts.

10x M3 nuts.


Washers (Spring washers)


Getting started:

Firstly you need to cut your 3 arms or booms to the correct length. I made mine 50 cm each, for extra stability since i am gonna use it eventually for FPV. So you need to markup 50 cm’s and cut them there. Pretty straight forward:

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The next thing you want to or should do is to print out the template from RCexplorers website here. Cut the main frame out with a scissor lay it on you 2,5 mm plate of plywood (or any other sort of wood that is strong enough) and draw around the template with a pencil or a permanent marker. Remember to draw two, as you will need two plates – top and bottom.

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Once you cut your two main plates out you want to sand the edges or file them or something like that to make them more smooth. After that you want to go ahead and drill the holes needed for assembling the frame. What i did was to lay the two plates on top each other, and the template on top of those two and align them all so it’s a “snug fit”. Now clamp them together and take a 3mm drill and drill the holes where they are marked on the template.

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Next up is to drill the holes in the two front arms. The last one (tail arm) doesn’t need holes because it is kept in by the 4 bolts surrounding it and pressing the plates together around it. You need to drill a hole in one (Only one!) end of each arm 20 mm in from the edge in the middle of the arm.

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Now drill a 3 mm hole where you marked it and thats it.

Now from your spare length of the part of the arms you cut away. Cut a small piece of 4 cm’s in length and round to edges which will be the front edges. Now you can assemble the frame, and you now have a professionally made frame. All credits goes to David Windestaal from RCexplorer who designed this frame.

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DSC_3456 DSC_3458

Also be sure to subscribe to both the blog and my youtube channel. That supports a lot. Thank you for reading. Bye for now.


Tricopter Build series – Which parts? [Part 1]

Hello again.

Since the last time i posted a blog update i decided i wanted to build a tricopter instead. This will be done the same way as i did with the quadcopter series, only a little more detailed. I will be uploading the series with only a few days in between the videos, as well as posting the updates here on the blog. I am also currently working a “Complete tricopter guide” where i will be making a full write up on how to make the tricopter. This will be published in a few weeks.

Tricopter build – Which parts? [Part 1]

So basically part 1 will be to collect the needed parts. The parts i used was:

Parts used:

MultiWii Pro board with GPS module:




Yaw Servo:

Yaw mechanism:


ESC flash tool: (You need both)


10mm*13mm*500mm arms. You need three 50cm long booms, which is 10*13 mm’s thick. Bought at local hardware store.
2,5 mm plywood for the two middle plates.

So this is basically part 1. These parts and links are also to be found under the parts tab if you click “Tricopter”.

Thats all for now. More to come shortly. Bye!