Jiro Hattori
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  • Kanagawa-ken
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Latest Activity

Jiro Hattori commented on Laser Developer's blog post LW20 LiDAR - half the size, twice the performance, infinitely better.
"It is back order now. Should we wait another 8 weeks for that?"
Jan 18
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"こちらは、3DRの残骸です。 簡単な質問、雑談、プレゼンテーションは、以下に https://www.facebook.com/groups/1661960827376400/ サポートは、こちらに(基本的に英語で) http://discuss.ardupilot.org"
Jan 10
Jiro Hattori replied to Forrest Frantz's discussion Japan Communication Hardware--What Do You Fly With? in the group Japan ArduCopter Group
"Hi Forrest. Do you have any plan to visit Japan? or You have already come to Japan. Anyway, very well come:-) Here is regulation for radio communication,Telec. http://www.telec.or.jp/eng/ Your equipment needs to be certified by Telec. Then the…"
Oct 26, 2016
Jiro Hattori commented on luke cooke's blog post Is DIY Dead
"+1 for ChrisA. New non-flying platforms, such as autonomous cars, might be a next(or temporally) frontier for DIY'ers. Actually, this will be a just detour of autonomous fly those things that computer and sensors coming to light, small and…"
Oct 20, 2016
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"日本語(英語も)の受け皿を作りました。 非公開なので登録希望を出してください。 ArduPilot Japan https://www.facebook.com/groups/1661960827376400/ 勝手に名前を付けたけれども良いのでしょうか?"
Oct 17, 2016
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"xBee下駄を装着可能な920MHzモジュール 基になっているガラパゴス規格を越えてMission Planner で使えるかは、不明です。 Lazurite 920J(Lazurite Miniシリーズ) http://www.lapis-semi.com/lazurite-jp/products/lazurite-920j Lazurite 920J Xbee Shield(Lazurite Miniシリーズ)…"
Oct 13, 2016
Jiro Hattori commented on Chris Anderson's blog post An autonomous RC car guided by TensorFlow machine vision
"Thank you for interesting input. May be TX1 is good to go when you intend to fly that thing, but Intel is robust while it moves on the ground:-)"
Oct 10, 2016
Jiro Hattori commented on Chris Anderson's blog post An autonomous RC car guided by TensorFlow machine vision
"The cost of i5-NCU and Tegra is almost same. Which one is your recommendation or like for this purpose?"
Oct 10, 2016
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"楽しそうなコトを(*^^)v  潜水と浮上でリバース回転になっているのですか?"
Oct 7, 2016
Jiro Hattori commented on Julian's blog post 3DR's Rise and Fall
"The supply of spare parts for Solo will be a next issue post bargain sales of Solo. Buying battery and spare body parts are things to do now. But open sourcing of Solo hardware and software(?) going to be one of the way. I hope 3DR still has some…"
Oct 6, 2016
Jiro Hattori replied to murata,katsutoshi's discussion ArduPilotは「組み込みソフト」、だったら保守性や品質をあげていきたい。 in the group Japan ArduCopter Group
"頑張っていますね。 ご存じのようにPixhawk本体とpx4flowは、既にDisconの風情です。  Pixhawk2と並行してSolo用のOptical Flow Sensor(px4flowの改良品)が、開発中なようなので、ネタをお知らせします。 詳細は、”Optical flow on Solo” http://discuss.ardupilot.org/t/optical-flow-on-solo/8756 です。 CANBUSになるのかなぁ?"
Sep 10, 2016
Jiro Hattori replied to 虎汰狼's discussion AutoTuneについて教えてください。 in the group Japan ArduCopter Group
Sep 3, 2016
Jiro Hattori replied to 虎汰狼's discussion AutoTuneについて教えてください。 in the group Japan ArduCopter Group
"Flight controller と ArduCopter の機種・バージョンを、お知らせください。 普通にAltHoldで飛んでいられる機体の状態ですか?"
Sep 2, 2016
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"Randyさん、JapanDronesの方に発注のメール致しました。 よろしく、お願いします。 そうですね、お陰でFacebookを復活させてPixhawk2 on Facebook にも、出かけています。"
Sep 1, 2016
Jiro Hattori replied to Isamu Yamashita's discussion QGroundControlに地理院地図を追加 in the group Japan ArduCopter Group
"何気に凄いです。 業務に使用されそうですね。"
Sep 1, 2016
Bingo Hiroki replied to Jiro Hattori's discussion Futaba 920MHz Telemetry in the group Japan ArduCopter Group
"思ったのですが、フロー制御を使う方法はどうでしょうか? Pixhawkに繋がるケーブルが6ピンコネクタなのに5ピンまでしか繋がっていないので、今すぐにはテストできないですが。"
Aug 23, 2016

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Enthusiast for machine and electronics and computer
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Jiro Hattori's Blog

Two hour and 12 minutes flight by PEM fuel cell

Posted on March 19, 2015 at 4:00am 19 Comments

This is really great accomplishment:-)

Montreal, Canada: EnergyOr Technologies Inc., a leading developer of advanced PEM fuel cell systems, recently demonstrated what are believed to be the world’s first fuel cell powered and longest ever duration multirotor VTOL UAV flights, flying for a record 2 hours, 12 minutes and 46 seconds.



Smartphone Case N

Posted on December 5, 2013 at 3:00pm 15 Comments

HONDA is introducing "Smartphone Case N" that has small six air bag to protect Smartphone in the case.

Sorry, the video is Japanese.  Followings are some essence;

The engineer is start development this case by his loss of his own smartphone, drop and damage.

He start drop test and found the critical height of damaging phone…


EMC Shielding for ArduCopter3.0

Posted on June 25, 2013 at 5:40am 37 Comments

The EMC shielding material reduce magnetic interference that is good to ArduCpoter3.0.

Measurement of magnetic interference becomes half by 60micron meter low-loss,high permeability nano-crystalline material.

Without magnetic shield…


How should we dealing with Li-ion Battery for flight safty?

Posted on January 17, 2013 at 2:55pm 16 Comments

As you know the Boeing 787 has been grounded by caught fire on the Li-ion battery.

It looks like Japanese battery may have some issues on this incident:-(

You might reminded some laptop PCs caught fire by its Li-ion battery, few years before.

It is ironic to the restriction of…


Comment Wall (6 comments)

At 5:27am on March 31, 2011, Whooper said…


What do you fly and is your field close to Tokyo? I'm located in Meguro and mainly into UAV aircraft, although just started to fly a KKmulticopter.



At 5:49am on March 31, 2011, Jiro Hattori said…

I'm living in Atsugi. It looks like lots of space to fly air craft in Atsugi. However, there are very few places to flay.

This is my main frustrated issue. You can visit my web site. It is some sort of language translation web site. http://aeroquad.at.webry.info/

At 6:23am on March 31, 2011,
Gary Mortimer
Thank you very much for helping me find the platform
At 7:50am on August 24, 2011,

Jiro, thanks for the suggestions on demonstrating the heli in Tokyo.  I might give that a try at the Tokyo Institute of Tech.  I guess the make fair is at the ookayama campus.  I'll ping you when I'm getting close to being ready..

At 1:41pm on November 25, 2014, Gary Elias Dimas Flores said…

Hi Jiro, I have an issue regarding the use of xbee with pixhawk, I'm using xbee as follows, 

but I´m still having problems. I write the next program to try send some data but I don't get any positive results.

#include <AP_Common.h>
#include <AP_Math.h>
#include <AP_Notify.h>
#include <AP_Param.h>
#include <AP_Progmem.h>
#include <AP_InertialSensor_MPU6000.h>
#include <AP_InertialSensor.h>
#include <AP_ADC_AnalogSource.h>
#include <AP_ADC.h>
#include <GCS_MAVLink.h> // Rediculous dependency to AP_InertialSensor_MPU6000
#include <DataFlash.h> // Rediculous dependency to AP_InertialSensor_MPU6000
#include <AP_GPS.h>

#include <AP_HAL.h>
#include <AP_HAL_AVR.h>
#include <AP_HAL_AVR_SITL.h>
#include <AP_HAL_PX4.h>
#include <AP_HAL_Empty.h>


AP_HAL::AnalogSource* ch;
AP_InertialSensor_MPU6000 _INERT; // MPU6050 accel/gyro chip

void setup (void) {
hal.uartA->begin(115200); // USB
hal.uartC->begin(57600); // RADIO

_INERT.init(AP_InertialSensor::COLD_START, AP_InertialSensor::RATE_100HZ);

void loop (void) {

hal.uartA->write("start \n");



Do you have an idea of what is happening?

Thank you in advance.


At 3:33pm on November 25, 2014, Jiro Hattori said…

Hi Gary

Do you have good communication through Mission Planner by your setup?

Please separate an issue for hardware or your software.


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