A new era, a new beginning

It's been a while since my last post. The main cause is that I felt the energy drain as the fall gets more visible with worse weather, not too encouraging for quad flights. The darkness is also upon us, which makes flight difficult if it's not during day time.

As I've previously written, I ordered the radio telemetry, which I now got working. No hassle, it worked instantly. The only fault I did was to not turn down the COM-port speed from 115k to 57k, there after it worked as a charm :). The picture displays how the flight controller is connected to the laptop and Mission Planner using the radios. The radios are basically a wireless serial port.

 

Next, I focused on the darkness or rather how to fly when it's not full day light. Dusk has previously also been a hassle but these lights should mitigate that obstacle. Looking close at the picture below you can see how I wired the break out wire directly to the power distribution board. The board has tiny connectors all over, which allows soldering and therefore can provide extra connectivity as these lights require 11V.

 

Now to the final product, I started putting the quad back together, putting the lights in place. Hope this can light up any future winter flights.

I decided to go with green on the front and red on the back. Traditionally you should have green to the left and red to the right, but that doesn't help me when I usually see the quad from behind. Therefore I went with red to back and green up front.

 

Radio telemetry ordered

A few days ago, I decided that it was time to order a radio telemetry set. I went for the set from GoodLuckBuy.com (got to love that name) for roughly $36. However, today when I investigated into why I hadn't received any package tracking information, I discovered that the package hadn't event been shipped out. Slightly disappointing as the page does not clam that the items are out of stock. The support chat however informed me that the items were in fact out of stock. Big minus for that site.

Anyhow. Not loosing fate, I decided to order yet another item, which I found in the new arrivals at DealExtreme as well but for a higher price. This is a current and voltage sensor that is way cheaper than shiny once at Sparkfun.com. It looks the same and has the same specifications but for a lower price, $14. It's used to report how much juice is left in the battery back to the MultiWii flight controller, which may take action if the capacity is going low. Actions such as RTL or land. We'll see how this goes but the support attendee informed me that the item was in fact in stock. At least one item was..

Whats broken

 

Today's casualties:

• Bottom right boom was bent
• Propellers spent as you can see
• One motor with strange sounds
• Ultrasonic range finder is MIA
• Few nuts and buts are spent

I found all electronics including flight controller, GPS, radio and ESC's to seem to work as usual.

Next thing I'll buy is the telemetry radio :).

More electronics

Doing some further research found that HobbyKing also features the 433MHz telemetry kit I found at GLB (GoodLuckBuy.com). Link to mentioned kit.

However, this kit comes with antennas that are optimized for 900MHz rather than 433MHz according to comments. Seem to be the same transmitter and receiver anyhow so if I choose to buy these, it will be from GLB.

Further browsing, I found a flight controller resembling the MultiWii/MegaPirate controller I previously used. This controller claims to be version 3 and seem to have improvements in the way the serial ports are made. Version 2 had three serial ports in the same physical port when this controller has separate physical ports for each serial port. I can't see any other differences looking at chip specifications.

MultiWii & MegaPirate v2.0

MWC Mega 3.0

If I can find that these are compatible, I'd rather choose the version 3 as soldering small wires are a pain when breaking out the serial ports.

Still missing.. and continuation

 

Yesterday I was out with a few relatives again to try and find the X550. No luck but must my posters are still hanging on the trees. My strongest guess is still that it's stuck in one of the trees at 15+ meters. However, due to the thick leafs it's quite hard to see anything. I'll have to wait for the leafs to fall off this fall and have a return trip to see if it's possible to spot it.

In the meanwhile if I get no word from any by-passers in a few weeks and as I still have a lot of parts and utilities, I think I'm going to start building a new quad. Almost half of what I've so far invested into this hobby are things such as battery chargers, spare parts, spare propellers and so on. This means I can probably put one together with not too much money.

What I'm missing are electronics and motors, which at most add up to a little more than $150. What I will further invest into and which would have saved my X550 that's done MIA is a radio linked telemetry system. It would have broadcasted it's position and I'd been able to find it easy. Now there are a few ways of solving the telemetry.

3DR $86

One way is the all expensive 3DR Radio Telemetry Kit seen to the right. It costs $86 and would probably do it's job in excellence. But as I'm still aiming for a shoestring budget, I'm sure there are alternatives.

Below are two low cost alternatives. They cost less than half of the original 3DR but should do the job. I've read a blog post regarding the APC220 about how to connect it properly. The third option I found yesterday browsing the web. I have no idea if it works but its branded as the 3DR with a different price so I guess it's a copy. But might still work as well as as the original.

3DR copy(?) $36

APC220 $33