Uploaded October 2013 | Updated September 2026, 3 weeks ago
I came across an interesting phenomenon related to infrared light (IR) while I was making my previous video and thought I could share it with you. I was recording the video and wanted to stop, so I took my camera remote control and pressed the "Stop" button. I noticed blinking on the camera screen, which turned out to be infrared light. I checked all other remotes I had at home and all cameras I could put my hands on - it worked in all cases.
If you understand this phenomenon and can explain it, please leave a comment below.
I used my smartphone on a tripod to record this video. If you're curious how I mounted it on a tripod, go to my previous video: youtube.com/watch?v=TVGzS46wAm8
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YouTube channel: youtube.com/user/electronfuncom
Google+: plus.google.com/+Electronfuncom
Facebook: facebook.com/ElectronFunPage
Twitter: twitter.com/ElectronFun
Website: ElectronFun.com
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Video, edit by Chris Lorkowski
Music by Jason Shaw - Clattertrap
audionautix.com
I came across an interesting phenomenon related to infrared light (IR) while I was making my previous video and thought I could share it with you. I was recording the video and wanted to stop, so I took my camera remote control and pressed the "Stop" button. I noticed blinking on the camera screen, which turned out to be infrared light. I checked all other remotes I had at home and all cameras I could put my hands on - it worked in all cases.
If you understand this phenomenon and can explain it, please leave a comment below.
I used my smartphone on a tripod to record this video. If you're curious how I mounted it on a tripod, go to my previous video: youtube.com/watch?v=TVGzS46wAm8
Subscribe to get notified about my new videos:
youtube.com/subscription_center?add_user=electronfuncom
----------------------------------------------------------------------------------------------
YouTube channel: youtube.com/user/electronfuncom
Google+: plus.google.com/+Electronfuncom
Facebook: facebook.com/ElectronFunPage
Twitter: twitter.com/ElectronFun
Website: ElectronFun.com
----------------------------------------------------------------------------------------------
Video, edit by Chris Lorkowski
Music by Jason Shaw - Clattertrap
audionautix.com
![How to unbrick a TP-Link TL-WR1043ND router (re-uploaded) || How-to-fix tutorial
In this video Im demonstrating how to unbrick (recover) a TP-Link TL-WR1043ND router after an unsuccessful firmware upgrade. Im showing the whole process from opening the case to installing firmware files through the serial console.
The whole story happened a few weeks ago when I decided to download and install the latest firmware for my TP-Link TL-WR1043ND router. Theoretically everything went fine, the installation finished and I got the Rebooting message. Unfortunately the router was rebooting over and over again. I realized something went wrong and my TP-Link became an expensive brick with blinking LEDs on it. I tried every non-invasive method I could find to reset the device and bring it back to life. Nothing worked for me, so I had to open the case, solder a gold pin connector and hook it up to my computer. Then I could manually upload a new firmware image to the router and install it.
DISCLAIMER:
If you decide to follow any procedure shown in this tutorial, youre doing it at your own risk. This may void your warranty and/or in rare cases damage your device.
Commands used in this video:
tpl [ENTER]
setenv ipaddr 192.168.0.3 [ENTER]
setenv serverip 192.168.0.5 [ENTER]
printenv [ENTER]
erase 0xbf020000 +7c0000 [ENTER]
tftpboot 0x81000000 firmware.bin [ENTER]
cp.b 0x81000000 0xbf020000 0x7c0000 [ENTER]
bootm 0xbf020000 [ENTER]
Download PuTTY here:
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Download Tftpd server here:
http://tftpd32.jounin.net/tftpd32_download.html
More info about TP-Link TL-WR1043ND:
http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd
Unbricking procedure from OpenWrt forum:
https://forum.openwrt.org/viewtopic.php?id=38424
Originally I uploaded this video on April 10, 2014, under this link:
http://www.youtube.com/watch?v=zrArf9iTMv4
On October 10, 2014 I accidentally deleted it from my channel. Boy, was I mad at myself!
If you want to see how it happened, go here:
https://www.youtube.com/watch?v=qU5OQs68iJI
Subscribe to get notified about my new videos:
http://www.youtube.com/subscription_center?add_user=electronfuncom
YouTube channel: https://www.youtube.com/user/electronfuncom
Google+: https://plus.google.com/+Electronfuncom
Facebook: https://www.facebook.com/ElectronFunPage
Twitter: https://twitter.com/ElectronFun
Website: http://ElectronFun.com
Video, edit, voice by Chris Lorkowski
Music by Jason Shaw - Medium Rock, Pilots Of Stone, Real Bad Girl
http://www.audionautix.com How to unbrick a TP-Link TL-WR1043ND router (re-uploaded) || How-to-fix tutorial](https://i.ytimg.com/vi/IHNrnLnLakE/mqdefault.jpg)
![How to calibrate an MQ-2 gas sensor || Arduino tutorial
In this short tutorial Im demonstrating how to calibrate an MQ-2 gas sensor and get your readings in ppm units. Im assuming you dont want to spend hundreds of dollars for a calibration kit. The method shown in this video is based on a piece of Arduino code created and shared for free by a company called Sandbox Electronics.
See the original video - How to use gas sensors with Arduino:
https://www.youtube.com/watch?v=BIf_mpnsZvY
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YouTube channel: https://www.youtube.com/user/electron...
Google+: https://plus.google.com/+Electronfuncom
Facebook: https://www.facebook.com/ElectronFunPage
Twitter: https://twitter.com/ElectronFun
Website: http://ElectronFun.com
Video, edit, voice by Chris Lorkowski
Music by RataxesUK - Everything [No Samples Edit]
https://soundcloud.com/rataxesuk/rataxes-everything-no-samples How to calibrate an MQ-2 gas sensor || Arduino tutorial](https://i.ytimg.com/vi/QYSDSKn2Vf8/mqdefault.jpg)








