$0
 bounty
0
answers
Low power long range IoT networks - LoRa vs SigFox vs Sub Gigahertz vs BlueTooth Mesh
4 years ago • alex@qrid
What is the most promising low power and long range IoT network technology? Is it LoRa or SigFox or Sub Gigahertz or BlueTooth Mesh or something else?
$0
 bounty
1
answers
Raspberry PI 3. How can I control a fan to cool the CPU?
4 years ago • lampego1@qrid
Scope: Raspberry PI 3 Cooler(max 5V, 0.3A) The cooler worked very noisy when I connected it to the 5V pin.
$0
 bounty
1
answers
How to SSH into Raspberry Pi over UART serail console cable?
4 years ago • alex@qrid
Let's say I do not want (or cannot) use WiFi or Ethernet. However, I am connected to my RPi3 over UART serail cable. Is there any way to establish an SSH connection (or any other TCP/IP based connection) to Raspberry Pi from Windows 7 PC? Thanks!
$0
 bounty
1
answers
Accessing UART serial console on Google Nexus 5 phone
4 years ago • alex@qrid
How to access UART serial console on Google Nexus phones, specifically Nexus 5 aka "bullhead"? Thank You!
Tags: , ,
$0
 bounty
2
answers
Is QSEE (Qualcomm's TEE) compliant with GlobalPlatform TEE specifications / API's?
4 years ago • alex@qrid
blank" title="undefined">QSEE is widely deployed on most of Samsungs and other phones that are based on Qualcomm's CPU (Snapdragon, etc). My question is does QSEE implement blank" title="undefined" "undefined">GlobalPlatform TEE API's. In other words, is QSEE compliant with GlobalPlatform TEE specs? Thanks!
$0
 bounty
1
answers
What is a pitch size in a 96boards low speed 40-pin connector?
4 years ago • alex@qrid
Trying to make a custom cable for my HiKey board Lemaker edition. I wonder what is the pitch size (i.e. distance between pins) on a 40-pin Low Speed Expansion Connector? Thanks!
Tags: ,
$0
 bounty
1
answers
Difference between ISO 14443 and ISO 18092, i.e. RFID vs NFC
4 years ago • alex@qrid
What is the difference between NFC (ISO 18092) and Contactless Card / RFID (ISO 14443)?
$0
 bounty
1
answers
[SOLVED] - ORA-01821 while parsing datetime string with Fractional Seconds (FF3 format mask for milliseconds) - ORA-01821: date format not recognized
4 years ago • alex@qrid
Java application is passing date and time to Oracle SPR as a string parameter that contains fractional seconds points (milliseconds). According to Oracle documentation, FF format mask is supposed to work with fractional seconds, and specifically FF3 should work for parsing those milliseconds. However I am getting the following Oracle error ORA-01821: date format not recognized : -- this code does not work - it throws the following ORACLE error
Tags:
$0
 bounty
2
answers
Monitoring ALL Bitcoin Blockchain transactions in real time on a global scale
4 years ago • alex@qrid
We need to monitor / intercept / inspect all bitcoin transactions that are being sent to certain rather small but ever changing list of Bitcoin addresses. Basically, we just need to run a custom code in the event of any new transaction being sent through Bitcoin P2P Network. What would be a reasonable technical approach to accomplish that task? Thanks!
$0
 bounty
1
answers
How to increase Java HEAP SIZE? Getting java.lang.OutOfMemoryError: Java heap space
4 years ago • alex@qrid
How to increase Java HEAP SIZE? Getting this exception: java.lang.OutOfMemoryError: Java heap space at runtime when trying to execute this line of code: byte[] data = new byte[cols * rows * elemSize]; in the main thread (console application). Environment: Win32 (Windows XP SP3 32 bit, 4 Gb of physical RAM): java -version java version "1.7.0_25" Java(TM) SE Runtime Environment (build 1.7.0_25-b17) Java HotSpot(TM) Client VM (build 23.
Tags:
$0
 bounty
1
answers
Android API for APDU over USB - communicating with smartcard / secure element in a USB form factor from Android App
4 years ago • alex@qrid
How to communicate with smartcard / secure element physically connected to Android device over USB? Thanks!
$0
 bounty
1
answers
Android API to communicate with SmartCard reader over USB port
4 years ago • alex@qrid
How to programmatically access PC/SC compliant smartcard reader from Android App? The smartcard reader is physically connected to Android device through the USB port. Thanks!
$0
 bounty
8
answers
Secure Element with JavaCard connected to Android Phone over USB cable
4 years ago • alex@qrid
We are looking at implementing a hardware security token with Secure Element (SE) with JavaCard smartcard connected to Android Phone over USB cable. In this design Android phone will be acting in a "USB host" mode. Looking for a list of SE chips or smartcard manufacturers who provide Secure Element chip in a USB form factor. Thank you!
$0
 bounty
1
answers
Android Wakelock troubleshooting - identifying the app that is preventing the phone from going into sleep mode and fast draining the battery
4 years ago • alex@qrid
My Nexus 5 sometimes drains from 100% chage to zero overnight. This only happens occasionally, and I am assuming some of the apps is not properly handing Android wakelock preventing phone from going to sleep. This assumption is confirmed by the following screenshot (Android KitKat 4.4.4). It shows 9 hrs of "keep awake" time and only 19 minutes of "CPU total" time. Question: how to find out what app is holding that wake lock preventing the phon
Tags: ,
$0
 bounty
1
answers
Global list of AID's - global well known Smart Card Applet ID's
4 years ago • alex@qrid
Is there a list of a well known smart cart AID's (Applet ID's)? APDU ISO/IEC 7816-4 Application Identifiers?
$0
 bounty
2
answers
How to reset DNS cache in Linux
4 years ago • alex@qrid
How to flush DNS cache in Linux? Similar to what you can do in Windows with this command: ipconfig /flushdns Thanks!
Tags: ,
$0
 bounty
1
answers
What is the exact HOSTS file location in Linux
4 years ago • alex@qrid
Where is HOSTS file located in Linux (Red Hat)?
Tags:
$0
 bounty
1
answers
Command to display Linux version / distro name / kernel version?
4 years ago • alex@qrid
What command outputs Linux version info / distribution name? What about kernel version? Thanks!
Tags:
$0
 bounty
1
answers
How to make HOSTS file to take priority over DNS in Linux?
4 years ago • alex@qrid
I want to disable certain hosts on a local Ubuntu Linux box by setting their host names to non-routable IPs. However, it looks like on that box DNS has higher priority over my HOSTS file so the changes that I make to the hosts file are being ignored. How can I make HOSTS file to take priority over DNS lookups?
Tags: ,
$0
 bounty
1
answers
Linux box start date
4 years ago • alex@qrid
How to determine Linux system reboot date and time
Tags:
21 - 40 of 201 items