This post is quite a short one, covering the basics of the PCB (printed circuit board) based chassis plates and connecting the rotor arms to create the quadcopter’s familiar configuration.
The top and bottom members that hold the rotor arms in situ are multi-layer PCBs. This gives a combination of strength from their fibre glass construction and flexibility of electrical connectivity from the copper tracks that run between the fibre glass layers & their break out points on the chassis faces.
The main battery connector is attached to the bottom chassis plate as shown below with the black wire soldered to the -ve pad and the red wire to the +ve pad (pretty basic stuff so far!). The beauty of the PCB chassis is that all the pads marked + are connected together, likewise those marked – . This makes connecting the main power feeds to the ESCs very simple as can be seen a little later on.
As the battery connector will be routed towards the top chassis plate (when fitted) I thought it wise to add some strain relief on the soldered joints by applying a little hot melt glue.
The assembled rotor arms from Part 1 are attached to the bottom plate using cap head bolts provided with the air frame kit (2 per arm) and the 2 ESC power feed wires soldered to the relevant pads on the PCB (as mentioned earlier). This leaves the orange control wire to the ESCs ready to be soldered to the FC later on. You’ll also notice I’ve numbered each arm to correspond with the diagram in Part 1 so I mount them in the correct location and use the correct rotor blade for each motor.
I know, a bit dramatic that title but what the hell, it’s my website!
I read and re-read the article in Hackspace and popped onto the Banggood website … good grief what a site, a veritable cornucopia of things you didn’t even realise you needed or wanted! The only down side with the site is the time you have to wait for delivery but the prices were unbelievably low so I wasn’t going to complain about waiting a couple of weeks to get my goodies.
The day finally arrived and this boring looking battered, black package arrived …
Like a little kid on Christmas morning I removed the packing and grinned at all the goodies within. They were soon laid out on the table for inspection …
That’s pretty much all the parts required to build a fully functional quadcopter. The main missing part is the receiver for the radio control which I had to source from Amazon … Banggood is an excellent source of parts but their restocking can take quite a bit of time on some items in my experience. The LiPo battery on the left was also sourced from Amazon. Banggood had a massive selection but were unable to ship to the UK as the batteries are classed as hazardous cargo I believe.
Another site recommended in the article is written by a guy called Oscar Liang. It’s more biased toward FPV (First Person View) and mini quadcopters but a large percentage of the information relates to any size aircraft … generally it’s just a matter of scaling up or down. There are some excellent articles just for beginners which were very useful.
Hopefully this has whetted your appetite to follow me on my journey to completion and the final step of actually flying the thing!