Jiro Hattori
  • Male
  • Kanagawa-ken
  • Japan

Jiro Hattori's Friends

  • Preston
  • nobuyuki asai
  • GByron Brooks
  • Tetsuo Yamamoto
  • Noriyuki Koike
  • Takuma
  • Tomoyuki Izu
  • Masafumi Miwa
  • Michael Johnston
  • Felix Meissner
  • Weiliang
  • Roberto Navoni
  • Randy

Jiro Hattori's Groups

Jiro Hattori's Discussions

Life size X8 is not stable

Started Nov 11, 2014 0 Replies

Here is a thread in Japan ArduCopter Group.APM powered X8 has more than 176Kg total thrust.Actually,…Continue


Jiro Hattori's Page

Latest Activity

Masafumi Miwa replied to Jiro Hattori's discussion Futaba 920MHz Telemetry in the group Japan ArduCopter Group
13 hours ago
Jiro Hattori added a discussion to the group Japan ArduCopter Group

Futaba 920MHz Telemetry

Futaba の920MHz帯の無線モデムで、APMの通信ができないか、検討中です。これが、APM側の構成です。 1) FEP01キットは、律儀にRS232Cの規格通りの電圧なので、5Vに落としています。2) FEP01キットは、6-12Vの電源が必要なのでAPM用5V供給用のBECをかましてあります。3) 通信速度は、38.4KBpsの次は、115.2KBpsなので、38.4KBpsに設定。4) FEP01のパラメータを添付のようにしています。…See More
14 hours ago
Jiro Hattori replied to Tim V's discussion Futaba RC setup and calibration
"Please connect your R3008SB like this. "
Jan 20
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"”Maker Faire Tokyo 2015は8月1日(土)、2日(日)に開催!” だそうです。 http://makezine.jp/blog/2015/01/maker-faire-tokyo-2015_announce.html *Miwaさん、動画はバッチリ見ました。 素晴らしいですね。"
Jan 20
Jiro Hattori replied to AizuCopter's discussion 無操作なのに回転数が上昇する in the group Japan ArduCopter Group
"Vibrationの状態は最高では無いですが、駄目と言うレベルでは無いようです。 別の方もやっていたのですが、ロープで吊ったりパラメータを自己流で弄った場合に遠隔レスは、困難です。 Defaultの状態(まっとうなQuadとか..)に機体をセットアップしてキャリブレーション等をしっかりやれば、Stabilizationモードで安定して飛びます。  そのような状態でのLogや機体やAPMの取付状態の写真が、あれば少し判断できると思います。 "
Jan 20
Jiro Hattori replied to AizuCopter's discussion 無操作なのに回転数が上昇する in the group Japan ArduCopter Group
"Mission PlannerのLog解析で、Mechanical Failure とVibrationのグラフをupしてくださいませんか? Compass Calibrationとか、実施済みですよね。(磁気干渉が、気になる。)"
Jan 19
Jiro Hattori replied to Edgar Scott's discussion I can't get rid of my toilet bowl in the group ArduCopter User Group
"I am afraid that your four screws are ferrous material and magnetized."
Jan 19
Jiro Hattori commented on hector hind's blog post Micro APM Hardware "Just make it smaller.."
"Where are you ?  Roberto;)"
Jan 16
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"ご無沙汰だと思ったら、こんなに楽しそうな。。 Hokuyo UTM-30LX Laser range finder でしょうか、FCもAPM系では、無いようですね。"
Jan 15
Jiro Hattori replied to AizuCopter's discussion 無操作なのに回転数が上昇する in the group Japan ArduCopter Group
"AC3.1から"Motors will spin (slowly) by default as soon as the copter is armed! You can switch this feature off by setting the MOT_SPIN_ARMED parameter to zero."で、Armedでプロペラが回転します。 3.1.5を、お使いですから、ご存じですよね。  少し回した状態のログを、解析されたら如何でしょうか? "
Jan 15
Jiro Hattori commented on noeL's blog post Walkera Voyager 3 iUAS - Futuristic APM Quadcopter
"It looks like mechanical linkage on camera gimbal and landing gears, then motors are stay in umbrella position.  Those design concept is practical to the Inspire by my thought."
Jan 14
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"無人航空機による西之島空中写真の撮影とその分析の論文ありました。 http://www.gsi.go.jp/common/000094707.pdf Here is English version. http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-8/71/2014/isprsarchives-XL-8-71-2014.pdf 福島に行ったのと、同じ機体ですね。"
Jan 2
Jiro Hattori replied to Toshikazu Takahashi's discussion 3DR IRIS+のペイロード位置について in the group Japan ArduCopter Group
"3DRのは、技術適合していません。国内使用は、違法です。 eRouteさんで言えば、 フタバ 14SGH 2.4GHz FASST ヘリ用 T/Rセット R7008SBhttp://www.enroute.co.jp/store/index.php?main_page=product_info&cPath=618_58&products_id=10935APM…"
Dec 25, 2014
Jiro Hattori replied to Toshikazu Takahashi's discussion 3DR IRIS+のペイロード位置について in the group Japan ArduCopter Group
"ご理解、ありがとうございます。 高度150m以下であれば、法律的制限は、無いのでしょう。 (航空法99条の2の第2項「飛行に影響を及ぼす恐れのある行為」の通報義務違反は、不明ですが、以下の見方をされれば、微妙。) 但し、GPS による自律飛行を考えていらっしゃるのですから、飛行場・スタジアム・甲州街道の至近距離での飛行は、中止してください。 10m以上の高度で飛ばさないと言っても、ArduCopter の信頼性も相当なレベルまで上がっていますが、Fly…"
Dec 24, 2014
Jiro Hattori commented on Randy's blog post Steps towards S&R in Japan
"Congratulations to Randy and Izu-san. This is great work on serious mission by ArduCopter in Japan. The quad you have employed on this mission has ridiculously huge propellers on it.   How do you consider alternative air frame such a fixed wing…"
Dec 22, 2014
Jiro Hattori commented on Randy's group Japan ArduCopter Group
"マルチコプタを買う前に、飛ばす前に見ましょう。(FAA版ですが。。) 飛行場の近所で飛ばすなんて、言語道断。 http://diydrones.com/xn/detail/705844:Comment:1862678"
Dec 22, 2014

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Jiro Hattori's Blog

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 36 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…


Japanes security firm introduces Quad UAV

Posted on December 26, 2012 at 5:30pm 4 Comments

SECOM is Japanese home & business security services provider.

They are introducing Quad UAV to support their business.

The security UAV is based on Ascending Technologies GmbH by ASCII.jp.

SECOM will provide this UAV as rental…


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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