３軸重心測定装置 / 3D Center of Gravity Measureme Device
K.Yama
@k_yama_2010
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今回の開発にあたり、同様な作品の前例がないかをネットでも探してみたのですが見当たらず、ロードセルを使った作品があっても、基板が露出しており屋外では使いづらい（子供にも扱いづらい）、またそもそもロードセルを２つ接続できる仕様ではない、といったものがほとんどでした。
M5ｓtack core2 AWSはこの２つの弱点を純正状態のままクリアしており、だからこそ「重心測定装置が作れる！」と自然と思いつけたのかもしれません。
In developing this time, I searched the internet for a similar work, but I couldn't find it. Also, even if there was a work that used a load cell, the circuit board was exposed and it was difficult to use outdoors (even for children). Furthermore, most of them were not designed to connect two load cells in the first place.
The M5stack core2 AWS has cleared these two weaknesses in its original state, and that's probably why I naturally thought, "I can make a center-of-gravity measuring device!"
公開後も順調に活躍中！
下の画像は友人来訪時にコーヒーを奢ってもらうときにつかってる簡易イカサマ装置ですｗ。もちろん来訪者にはM5stackが目に付かないよう位置は変えてますｗ。余裕で100％の的中率です。あとでネタバラシしたときの反応を見るのも楽しみの一つですｗ。
Still performing well even after its release!
The image below depicts a makeshift cheating device used when having friends treat you to coffee during their visits. Of course, the M5Stack device's placement is adjusted so that visitors won't notice it. It achieves a flawless 100% accuracy rate effortlessly. It's also one of the enjoyable aspects to witness the reactions when the trick is revealed later.
またUAVの水上飛行機の調整にも威力を発揮しています。翼弦方向の重心だけを合わせれば一応飛行可能な陸上飛行機とは異なり、さらに重心位置とフロートの浮力中心のズレ、重心位置とフロートのステップ位置（注①）のズレ、これらも密接に関わり、互いに影響を与えるため、仮組み、測定、微調整の繰り返しは欠かせません。これらが適切でなければ、このサイトのトップのスライド画像にもあるとおり復元力を超えた姿勢に陥り簡単に転覆してしまいます。この部分は通常の船よりずっと条件が悪い（Z軸の重心が極めて高い）ことから起こるものです。測定装置があれば、これらの難しいセッティングも極めて正確に調整可能で、荒波のなかでも安定した離着水が可能だとわかりました。「勘」からの脱却です。
It is also useful for adjusting UAV seaplanes. Unlike land aircraft, which can be flown only by aligning the center of gravity in the wing chord direction, the difference between the center of gravity and the center of buoyancy of the float, and the difference between the center of gravity and the step position of the float (Note ①) are also closely related. Repeating trial assembly, measurement, and fine adjustment is essential because they affect each other. If these are not appropriate, as shown in the slide image at the top of this site, it will fall into a posture that exceeds its resilience and will easily capsize. This part is caused by the fact that the conditions are much worse than normal ships (the center of gravity of the Z axis is extremely high). With the measurement equipment, we found that these difficult settings could be adjusted extremely accurately, and that stable takeoff and landing were possible even in rough seas. It is a departure from "intuition".
注①ステップ位置：水上機が離水のため滑走したときに船底と水面の接触面積が少なくなるように設けられた段差。
Note ① Float Step : A step designed to reduce the contact area between the bottom of the seaplane and the water surface when the seaplane taxis for takeoff.