Raspberry pi zero and USB3 memory stick

Raspberry pi Zero (Pi-Zero) may not be able to recognize USB3 devices because of a power shortage of USB port. My Extreme Pro USB3.0 stick (128G, SANDISK) is not recognized by Pi-Zero without using a self-powered USB hub. However, a self-powered USB hub is too inconvenience to carry due to a bulky AC adapter.

The "max_usb_current=1" in the /boot/config.txt, which changes the Maximum USB current to 1.2 A, is not effective for Pi-Zero

I am using "Double-Powered USB hub (USB-HUB227WH3, SANWA supply, JAPAN)" which I bought very long ago.

If the Red connector is connected to a USB port or a power adapter, electrical power of USB hub is overloaded above 1A, like a self-powered Hub.  It can also be used as a bus-powered hub without using the Red connector.

With the USB-OTG setting, My USB3.0 memory stick can be used in Pi-Zero by connecting the red connecter to a 1A power adapter only.

Needless to say, just USB2.0 speed.

Bose Bluetooth headset Battery replacement

The battery of my favorite Bose Bluetooth headset is almost dead!!

I replaced new battery bought at Akihabara.

New battery 3.7V 85mAh, originaly 90mAh

Disassemble headset

Notice two holding pins.

Lithium polymer battery must be soldered carefully.

My Bose headset becomes refleshed!!

Nov. 5. 2017 added

Dear many friends!!

Thank you for much comments. I'm sorry because my Bose headset has broken....

Windows10 installed on Meegopad T01

Windows10 was released!!  I tried to install onto my Meegopad T01.

First, the upgrading from windows8.1 was performed.

About 2/3 of 32GB eMMC was used.

Display adapter and some devices were needed to be recognized manually as same as Windows 10TP.

Next, the clean instalation was done.  Windows10pro uses about 9GB of eMMC.

The volume label and the file index option couldn't be modified in windows10.  I wanted them but resulted in error.  However in Safe Mode, They can be modified.

SanDisk Extreme PRO USB 3.0 Flash Drive

Recently, I got SanDisk Extreme PRO USB 3.0 Flash Drive.

SanDisk Extreme PRO USB 3.0 Flash Drive (SDCZ88-128G)

and, SanDisk Extreme USB 3.0 Flash Drive (SDCZ80-064G)

Benchmarking by CrystalDiskMark on my NUC USB3.0 (SDCZ88-128G)

The result of SDCZ80-064G as control

This is nothing but large storage capacity ?

Softbank 007z and C01HW don't have GSM mode ?

Recently, I traveled on business to Philadelphia, USA.  I brought my sim-unlocked 007z and C01HW, wifi mobile routers.  My 007z was flashed by 007z for BIZ firmware.  C01HW is a sim-free model originally outside Japan.  As far as I know, it was not obvious whether 007z and C01HW were usable in GSM area or not.  I tried them with T-mobile SIM.

T-mobile USA is using 3G of 1700/2100MHz (AWS), which is of course not supported by 007z nor C01HW.
Softbank 007z and C01HW recognized T-mobile sim but displayed "No Service".  I check every settings on the web-based utillities but they never connected T-mobile USA.  Therefore, it is supposed that 007z and C01HW don't support GSM mode as well as AWS.

My ISW13HT could connect T-Mobile USA at most EDGE speed.

JAL sky wifi in the domestic flight

JAL sky wifi provides the fared internet connection service in the domestic flight of Japan.  It also provides some free video entertainments including anime, sport, comedy, etc.

I enjoyed free videos very much during the flight.

Meegopad T01 can be supplied additional power via the data USB port

Meegopad T01 is very attractive.
From my experiences, at least 1.5A (5V) is necessary to boot OS (windows8.1).  OS doesn't start up on a low-ampere AC adapter.  However, T01 seems to be recieved power from another microUSB port (for DATA) additionally.  Then, dual low-ampere AC adapters can make T01 start windows8.1 at own risk.

diNovo mini can be charged by USB

first story at own risk

Logitech diNovo Mini

Recently, I am using diNovo Mini again.  It was perchased about ten yaers ago but not in use for long.  It is very suitable to ECS LIVA or Meegopad-T01 because of its compact size and touchpad although Windows 8.1 Bluetooth Issue needs to be fixed. 

However, the battery of my diNovo mini is already dead due to its oldness.  According to here, this battery is compatible to NOKIA BLB-2 battery, then I ordered.  

Moreover, I maked a usb-charging cable (DC jack 1.4x3.4mm center positive).

 USB provides only 5V though the original AC adapter provides 8V.  But the battery seems to be charged with my usb cable.

second story

Meegopad T01 and windows10 TP

I bought a Meegopad T01 stick PC.

This stick PC is released without OS.  Correctly, non-activated windows8.1 is preinstalled.  Very manly, therefore very inexpensive.
Immediately, I tried to install windows10 TP claenly from DVD.  Some devices needed to be recognized manually with windows8.1 driver "光棍一号T01驱动.rar".

In my situation, the Wi-Fi conditions are unstable.  At present, it is hard for the daily use.

SSD keychain

The SSD kaychain by BUYMORE, akihabara, Japam.

This is an only keychain (1980JPY).

FON_FREE_EAP

The newly-updated FON firmware becomes to broadcast the SSID "FON_FREE_EAP", that is secured by WPA-enterprise protocole and unnecessary for the additional web-login.  This secured FON seems to be broadcasted from the fonera collaborated with SoftBank Japan (偽FON, 禿FON).  The official tutorial about FON_FREE_EAP is not disclosed as far as I know.
My setting in windows7.

 WPA-enterprise & AES

User authentication

In windows8.1, WPA-enterprise (not WPA2-enterprise) is missing from the internet connection settings.  Nevertheless, WPA-enterprise profiles can be imported using command line.  I exported this profile from windows7 machine, and imported to windows 8.1 machine (ECS LIVA).  It works fine.

ISW13HT HTC J on FOMA plus area

HTC J (ISW13HT), japanese custom model of HTC valente, is my favorite smartphone.  It has been developped to get ROOT, S-off, and SIM unlock (link in japanese).  Recently, I'm using HTC J with Docomo MVNO data-only SIM (iijmio).  In previous android versions,  the problem of "cell standby" battery drainnig would occur in a data-only SIM according to here.
However, the improved fix of HTC J was already disclosed in here (japanese).

In addition, the special modification for HTC J to catch FOMA plus area (W-CDMA 800MHz band XIX) was also disclosed in here.  I adapted these mods to my HTC J with some difficulties.

Yesterday, I traveled to Hokkaido on business.  Then , I comfirmed the above mentioned mods worked well (connection was established on FOMA plus area and antenna pict was displayed).

Connectify PRO

I use my ECS LIVA as a wifi router.  NETSH commands and Ineternet Connection Sharing, featured by windows, creates a wireless hosted network very easily.  However,  the source to share the Internet connection must be configured manually, e.g. wifi, LAN, 3G or 4G modem.
I googled an automatic switching of ICS and the open source software SeventhGate was reported to have an option to select the suitable network connection as the source of ICS of  multiple connection sources, then I tried.

Unfortunately, SeventhGate doesn't work on windows8.1.

So. I googled again and found Connectify also had the same function but not in free version.  Moreover, now 70%off-offer was disclosed.   

I purchased and installed Connectify PRO and the automatic switching of ICS sources was established smoothly.

SIM-unlocked softbank 007z part 3

Even if sim-unlocked and firm-updated, the connections to NTT Docomo of my softbank 007z are not stable.  According to 2ch, a softbank 007z supports Band9 (1.7GHz) and Band11 (1.5GHz) only, Band1 (2.1GHz) is not supported.  It also imformed that the modified 007z for BIZ firmware makes it possible to catch Band1 in exchange for unsupporting Bnad9 and Bnad11.

Change "SBMFAREN_JP_MF80" to "SBM_JP_MF80V1.0." by Binary editor and flash.

The connection to NTT Dococmo becomes very stable.  However, this is not recommended, as it is said that the restoration to original firmware is impossible.

007z in USA

After sim-unlocked Softbank 007z

Last week, I unlocked my Softbank 007z using DC-unlocker, then it could be used with Docomo sim.

But, the connections to Docomo were often disrupted.

My 007z's firmware was BD_MF80V1.0.0B18 although newly BD_MF80V1.0.0B19 firmware had been disclosed.

The firmware update was done.

The connection to Docomo seems to be slightly improved, I feel !?

after story

SIM Unlocking Softbank 007z (ZTE mobile hotspot)

The Softbank 007z, the japan custom model of ZTE MF80, is SIM locked model.  This time, I tried to unlock 007z because I had heard it very easy to unlock 007z using DC-unlocker.

The original 007z with NTT Docomo sim shows "SIM Lock".  Then, I executed DC-unlocker on windowsXP.

===================================================================
For correct ZTE modem detection, please plug modem with invalid operator SIM inserted. Wait till software starts the modem, close ZTE software and then you can detect modem with DC-Unlocker.


DC - Unlocker 2 Client 1.00.0460

Detecting card :

selection :
manufacturer - ZTE datacards
model - Auto detect

Found modem         : MF80
Model               : Unknown ZTE modem
IMEI                : 35*************
Firmware            : BD_MF80V1.0.0B18
SIM Lock status     : Locked (Card Lock)

===================================================================

Unlocking, please wait ...

Card successfully unlocked !

Credits left : **********

===================================================================

Very easy!!
After configuration APN setting at 192.168.3.1, my unlocked 007z catched NTT Docomo soon.
However, the connection to Docomo seems to be unstable and sometimes interrupted.

after story 1
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