SElabs tech blog

লওঁতে ৩০০০টকা ভৰিব  ( ১৩৯৯/- এফেক্তিফ প্ৰাইচ মানে 3year refund আদিত চেভ হৈছে বুলি কিবা হিচাব)  ৩ বছৰে ৬০০০টকাৰ ৰিচাৰ্জ কৰিবই লাগিব  তাৰ পিছত ১৫০০/- ঘুৰাই দিব          কিন্তু একাউন্তলৈ নহয় ! পেমেন্ত ৱালেতলৈ হে  JUST TWO REASONS NOT TO BUY IT 1) JUNK KARBONN MOBILE  Really looting 6000Rs for a bad karbonn phone .karbonn is a bad cellphone company . many defects in all devices  . They have tied to airtel to dump waste model to desi ciustomers .  প্ৰথম হৈছে ফন কোৱালিতি  ই কাৰ্বনৰ নিম্ন মানৰ হেন্দচেত ... কিবাকে ৪জি কৰিছে । কাৰ্বন সকলো ফন লাখ দিফেক্ত ওলাই কম্পনি বন্ধ হৈ পৰিব ওলাইছে ।  ১গিগাহাৰত্জ(1Ghz cpu) প্ৰচেচৰ ফন বোৰ ডাস্টবিনলৈ পেলাব ধৰিছে ...

you said Joule Thief?  you said Joule Thief?  It’s a little wisp of a circuit that allows you to drive aPOWER  LED from a low voltage. Normally, if you want to light up a blue or white LED you need to provide it with 3 – 3.5 V, like from a 3 V lithium coin cell. But the magic of JT is  a 1.5 V battery like a AA cell simply will work.  Easy make  Joule Thief,  works like a charm. Not only does it work with a brand new battery, but it works until the battery is nearly dead– down to 0.3 V.  That’s well below the point where your other toys will tell you the battery is dead, so it can steal every last joule of energy from the battery (hence the name). how about a cellphone charger , yes it is doable , we are here to give you  a usable tested diagram . get  the ring toroid from a OLD smps of pc ! 

The embedded designs have been gaining rapid acceptance in  smart homes . The world is a connected place now a days .  The physical data is plugged to net via The Internet of Things (IoT) . Physical data access embedded with electronics, software, sensors, and connectivity enabling data exchang The trend is , a little networked board is attached to a thing,or a item that has  special data . The  thing can be  lightbulbs, toasters, refrigerators, flower pots, watches, fans, planes, trains, automobiles, or anything else around you .  So to get you the data on your nice HD screen of mobile we need a brain and a connection . So most IOT devices have these and associated memory and IO pins .  Usually they are designed to fill a gap in the device i.e.control the thing according to USER and monitor . That can be a home based system and a office system or traffic related .  The IOT is limitless  and most seeked after device domain among de...