How good is your existing oscilloscopes FFT function with the $10 DIY EMC H-field probe compared with a dedicated spectrum analyser? Dave tries the DIY EMC probe with half a dozen different low cost scopes, so it turned into a bit of a practical FFT shootout: Rigol DS1054Z Siglent SDS1202X-E Keysight DSO1204X Rohde & Schwarz ...

A comprehensive tutorial on room (space) heater technology and their effectiveness and efficiency in heating rooms and homes. The different types of heat transfer are discussed, along with the different types of heater technology available and how they apply to room and object heating. The 2nd law of thermodynamics, and the impossibility of new graphene ...

Busting the SOLUS Kickstarter – “The Most Efficient Radiator In The World” based on “completely new, eco-friendly and graphene-based technology” “Save over 80% on your next heating utility bill”! TLDR; It’s a crazy expensive 200W – 300W glass panel heater with magic woo-woo graphene paste that does not produce any more heat than any other ...

Will this dumpster 500MHz 4 channel Tektronix TDS540D scope work? Teardown included of course. Forum HERE

Dave shows how to search for cheap 6.5 digit bench multimeters on Ebay and other auction locations Would you believe less than $200? Equipnet auction The multimeter spreadsheet Forum HERE

Repairing the Schaffner NSD200E Mains Interference Simulator. And the dangers of bad mains filters capacitors, and RIFA brand in particular. HVP-70 High voltage differential probe Forum HERE

A look inside a Swiss made Schaffner NSG200E Mains Interference Simulator after it released the magic smoke. A very unusual bit of kit that tests products for mains line interference like lightning strikes, transients, and dropouts. May involve alien crop circles. Forum HERE

Dave exposes the ECO (Nitro) OBD2 Fuel Saver as a complete SCAM! They are supposed to talk to the car’s ECU via the CAN bus on the OBD2 connector, but does it even do that? Or is this Homeopathy for cars? Bonus rant on Audiophile Audiophoolery! Forum HERE

What is parametric searching, how is it useful, and how to best use it. Dave answers a viewer question and hunts down the best microcontroller for the job, explaining and demonstrating parametric search engines in the process. Forum HERE

Mailbag Forum HERE Stempedia Electronics Learning Kit: https://thestempedia.com Powerfilm Solar flexible indoor solar panels and bluetooth development board. https://www.powerfilmsolar.com/specialty-markets/indoor-solar-panels/ Synwit 25 cent ARM micro http://smdprutser.nl/blog/the-arm-chip-that-wont-cost-an-arm-and-a-leg/ https://lcsc.com/product-detail/Synwit_SWM050I2P7-65_C111818.html Xmas tree light PCB: https://goo.gl/U8H48y Casio Calculator watch teardown Full length video cuts: Stempedia Evive: https://www.youtube.com/watch?v=WXJP_CNYt3o Powerfilm Solar: https://www.youtube.com/watch?v=S-UqkM8iDKM