Everything you need to know about how Thermocouples work. K type thermocouples, the Seebeck effect, the Seebeck coefficient, and cold junction compensation. Along with some practical measurements with a multimeter to demonstrate the effect. Seebeck effect on a single conductor: http://www.dataforth.com/catalog/pdf/an106.pdf NIST Tables: http://srdata.nist.gov/its90/download/download.html Forum Topic: http://www.eevblog.com/forum/blog/eevblog-419-thermocouple-tutorial/ ... https://www.youtube.com/watch?v=AYblSfpKRUk

Dave explains the Dickson Doubler building block circuit. a.k.a diode charge pump. Use a spare microcontroller pin, some diodes, and capacitors to create a useful voltage doubler or voltage multiplier. EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: ... https://www.youtube.com/watch?v=I4ED_8cuVTU

Dave takes a look at the Orange Pi One $10 single board 4 ARM Cortex A7 processor computer and compares it to the Raspberry Pi 2. Coving the install of the ARMbian flavour of Debian. Beware the security bug! And what is the power/watt efficiency between the two? http://www.orangepi.org/orangepione/ Schematic: http://linux-sunxi.org/images/7/7e/ORANGE_PI-ONE-V1_1.pdf Allwinner H3 datasheet: http://linux-sunxi.org/File:Allwinner_H3_Datasheet_V1.2.pdf Open source Allwinner H3 community: http://linux-sunxi.org/Main_Page ... https://www.youtube.com/watch?v=TEyU1zSqFwU

Dave found this crazy bargain of the century no-name $9 0.02% class multifuction process calibrator on Aliexpress. Is it any good? Actually, it's an AIMOmeter AMPX1 that sells for over $200 on ebay, so what gives? How can they possibly manufacture and sell a 0.02% class device for under ten bucks? Teardown time. Links to stores with availability, grab two before they are gone: GONE! http://s.click.aliexpress.com/e/2q15Asnm GONE! http://s.click.aliexpress.com/e/KzXfowmG GONE! http://s.click.aliexpress.com/e/pXZzeMQM GONE! http://s.click.aliexpress.com/e/N2SvlX3i GONE! http://s.click.aliexpress.com/e/qREQSsXA GONE! http://s.click.aliexpress.com/e/n9bRRByU GONE! http://s.click.aliexpress.com/e/mgEv3VYU GONE! http://s.click.aliexpress.com/e/B1dhXBHI GONE! http://s.click.aliexpress.com/e/5SZr1USk http://s.click.aliexpress.com/e/KOvQe5u8 http://s.click.aliexpress.com/e/MM6QzxEo http://s.click.aliexpress.com/e/rROyF3hm http://s.click.aliexpress.com/e/Dw6LDRCk Forum: https://www.eevblog.com/forum/blog/eevblog-1248-insane-a-0-02-process-meter-for-$9-wtf/ Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Stuff I recommend: https://kit.com/EEVblog/ Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 ... https://www.youtube.com/watch?v=y3h02BDPMJw