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Using AiRScouter WD-300A

When taking aerial shots or movies with a drone, I sometimes lose track of it while looking at a monitor. I usually fly it by myself and decided to use a head-mounted display for one eye named AiRScouter to solve such an anxiety. By using this, I can check images on the monitor without taking my eyes off of the drone, so the operational safety is greatly improved. Although the display is very small, I can watch not only images but also a telemetry information such as its battery level, distance, and altitude.

But there was a problem. The AiRScouter connects to a transmitter or a monitor connected to the transmitter using an HDMI cable and mirrors the image of the monitor onto the display near my eyes. It can be used with Phantom4 Pro+ because its transmitter has an HDMI port. But it cannot be used with Mavic series. It was a big problem for me, so I tried EZCast 2.4G HDMI dongle receiver that was sold for 2,699 yen on Amazon, and I was able to use it without any problems. An iPad or an iPhone connected to the transmitter and this dongle are connected via Wi-Fi, so around the transmitter became tidy.
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Inserting the EZCast directly into the control box of the AiRScouter interferes with the power USB port next to the HDMI port, so I use a 10-centimeter HDMI extension cable (DOSAN brand) . That's a little bulky, but it can't be helped.

The power cable terminals of the AiRScouter and EZCast are both USB Type-A, so I use a mobile battery (MOXNICE brand) that has two Type-A USB ports.

I got a hard case for the Air Scouter and some small items related to it. I also put an adapter for attaching an iPad to the Mavic's transmitter and an HDMI cable for wired use in the case.
TRUSCO Protector Tool Case Olive M TAK13OD-M

I have recently started soldering to remodel toy drones and to make racing drones by myself. It might be the first time that I used a soldering iron since I was in junior high school.

I've been doing it on my own way for a while, but one day I learned that there was the right soldering method from a book. And last week, I participated in a "Soldering workshop" by Masaharu Nose, the author of the book I read. The workshop was held in Shiga Prefecture neighboring Fukui Prefecture, so I could go there easily.

Until then, I thought that soldering was melting solder with a soldering iron and bonding two terminals, or terminals and lead wires with the melted solder. However, I found it was completely different.

The correct method is to use a soldering iron to heat base materials such as terminals and lead wires, and apply solder there to instill. And the appearance of the result is quite different accordingly. It was actually an eye-opening experience for me to know the strong and beautiful soldering method.
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Ugly soldering that I did before

First soldering that I did in the right way

By the end of the workshop, I tried delicate soldering to install these small parts.