Showing posts with label misc. Show all posts
Showing posts with label misc. Show all posts

Monday, January 21, 2019

Monday, November 26, 2018

Watch InSight's Landing on Mars

InSight is set to land on November 26. You can watch Online.

InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, is a Mars lander designed to give the Red Planet its first thorough checkup since it formed 4.5 billion years ago. It is the first outer space robotic explorer to study in-depth the "inner space" of Mars: its crust, mantle, and core. ~ InSight Mission Overview

See inside mission control at NASA’s Jet Propulsion Laboratory as signals return from the InSight mission as it lands on Mars. Landing commentary includes interviews with team members.


See a 360-view from inside mission control at NASA’s Jet Propulsion Laboratory as signals return from the InSight mission as it lands on Mars.

Thursday, September 24, 2015

Win a Halloween Raspberry Pi Kit


element14 community have decided to give away 10 Pi Sense Hats and 7-inch Pi Touchscreens along with other goodies for you to Build-A-Long with two awesome Halloween projects.

details ~ Enter to Win a Pi Sense Hat or Pi Touchscreen 7.0


Friday, November 21, 2014

Raspberry Pi Challenge Day @ UKFast

UKFast hosted a challenge day for The Dean Trust Ashton-On-Mersey School to inspire the next generation of software engineers. Guided by our industry experts; the students learned to program the Raspberry Pi to control bedroom lamps with their smartphones and modified Minecraft.

Saturday, October 11, 2014

Check your Raspberry Pi board revision

To find the board revision of your Raspberry Pi, enter the following command:
cat /proc/cpuinfo



The number in Revision identify the board revision. check the revision list here: http://elinux.org/RPi_HardwareHistory#Board_Revision_History


Monday, August 25, 2014

How much current Raspberry Pi draw

Shown in the video is a low cost USB Voltage Current Multimeter, it show the voltage and current at USB port alternatively. Maybe it's not a professional equipment, I can use it to monitor monitor and estimate power consumption on my RPi.

In order to eliminate the extra power draw by accessories, the Raspberry Pi connect USB power cable and network cable only, for sure with SD Card also.

Saturday, July 19, 2014

Allwinner A80T's Solution Development Cycle

This video shows the progression of 5 PCBA designs throughout Allwinner A80T's solution development cycle:
  1. Initial dev board: a fully-expandable performance evaluation board used for early-stage driver development and IC performance optimization.
  2. A80 OptimusBoard: a small-size development board used for non-tablet application SDK development.
  3. Tablet form factor reference board: a development platform used primarily for Android porting optimization, early-stage reliability testing, and solution reference design.
  4. Customer tablet boards: a mass-production tablet designed by customer based on Allwinner reference design.
  5. CubieBoard 8: a development board designed by customer based on Allwinner reference design.
Allwinner A80T's Solution Development Cycle


Wednesday, July 16, 2014

Read Raspberry Pi CPU temperature

In Raspbian, the file /sys/class/thermal/thermal_zone0/temp keep the CPU temperature, in 1000 (C degree). We can read Raspberry Pi CPU temperature with the command:

$ cat /sys/class/thermal/thermal_zone0/temp


Friday, April 18, 2014

How can I become a good programmer

"Everybody in this country should learn how to program a computer...
because it teaches you how to think" ~ Steve Jobs

A motivational video for new beginner programmers by industrialist and entertainers like: bill gates, larry wall, mark zuckerberg and will i am.

Thursday, April 17, 2014

Raspberry Pi Takes a Swim!

Raspberry Pi submerged in mineral Oil!
***NOTE: DO NOT USE WATER, ONLY MINERAL OIL!

Friday, January 24, 2014

evtest, tool for input event testing

evtest is a open source tool that can be used for testing the USB HID class drivers and any other drivers based on event framework . Its an event device test program. It helps in seeing the event layer events that a USB HID device like a USB keyboard or a USB mouse or a keypad or a touchscreen might be generating. Thus it can be used to test USB HID(USB Mouse and USB keyboard),keypad and touchscreen modules.

Supports-

  • Detection of USB mouse movements, left button click, right button click, middle button click, wheeling.
  • Detection of keys pressed on USB keyboard .Value of key pressed appears on the serial console.
  • Detection of keys pressed on keypad.Value of key pressed appears on the serial console.
  • Detection of pressure values on touching the touchscreen.

reference:



To install evtest, enter:
$ sudo apt-get install evtest


What is a Raspberry Pi?