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In this guest video Karl Adams shows us how to measure low levels of distortion in audio circuits. The example used is an LM1875 in a compound configuration. Subscribe to Karl Forum HERE

In this guest video, Joel from OpenTechLab reviews and experiments with the IcoBoard, which features the Lattice iCE40 FPGA, and firmware synthesis with the Open Source “IceStorm” tool-chain. icoBOARD is a FPGA based IO board for the RaspberryPi Part 2 is on his channel Show Notes Subscribe to OpenTechLabs Forum …

Solar Freak’n Roadways is the LOL that keeps on giving! Watch the webcam LIVE Forum HERE Podcast: Download

Last mailbag for 2017! Forum HERE SPOILERS: 0:00 Isolated Serial UART Kickstarter https://www.kickstarter.com/projects/902741881/optically-isolated-usb-to-serial-adapter 4:19 TCXO Oven crystal oscillator teardown 17:07 uRad Environmental Monitor Products https://www.indiegogo.com/projects/air-quality-monitoring-network?secret_perk_token=70df5873#/ EEVblog Office Live Data: https://www.uradmonitor.com/?open=820000BE 20:37 Visual VU meter: http://sch-remote.com/ 23:25 Random LCD PCB thingo 25:32 Interesting construction industrial controller teardown 30:32 Open Source Servo …

A review and teardown of the Ledger Nano S crypto currency hardware wallet. Installation, setup, and transferring bitcoin cash, ethereum, and ripple. And a comparison with the Trezor, which one is better? Buy them HERE Secure chip HERE Verify your Ledger Nano S hardware HERE Forum HERE Podcast: Download

Dave finally puts an end to the idea of Solar Roadways. We have the test results of the world’s biggest solar roadways project, the 1km long 336kW Colas Wattway project in Tourouvre France. Stand in awe at how impractical and expensive it is!, and SPOILER, how it won’t usher in …

Dave explains and demonstrates how out of phase digital signals can effectively double your voltage. The magic of moving your reference point. And how you can verify this with a differential probe. A question bought up in the comments of the previous LCD driving video. The HVP70 High Voltage Differential …

How to drive a static LCD display with digital logic and an Arduino / microcontroller. Code HERE LCD HERE Forum HERE Podcast: Download

Part 1 in a series of videos on designing a custom LCD display. This tutorial covers how LCD displays work, the 3 different types of interface (DIP, Elastomeric, Flex), the three different optical types (Reflective, Transflective, and Transmissive), and the two different types of drive (Static vs Dynamic) Microchip AN658 …

More Mailbag! MLCC Paper Forum HERE SPOILERS: AVX Capacitor Bonanza! Pixel LED Light Kickstarter Carbide Steel Multimeter Test Probes AMX Touch Screen controller teardown Patent bullshit and automotive meter teardown Pandora Portable Gaming Console Teardown Podcast: Download

The new Siglent SDS1104X-E $499 4CH oscilloscope is a new contender for Rigol’s DS1054Z dominance. What’s it like inside? Forum HERE Podcast: Download

Peter Daly from Keysight takes us on a tour of their Melbourne calibration and repair lab. Both automated and manual test benches, high voltage PSU test system, phase noise measurement system, and rohs repair. Forum HERE Podcast: Download

A look at the Caesium beam time and frequency standards at the Keysight standards lab in Melbourne Australia, with Peter Daly. Forum HERE Podcast: Download

Peter Daly from Keysight takes us into the Metrology Standards Lab at Keysight in Melbourne Australia. Looking at the RF standards and test rack and detailed looks at metrology grade RF connectors. Standards lab vs calibration lab, and traceability. Forum HERE Podcast: Download

What’s inside the 4CH 100/200MHz entry level Uni-T UPO2104CS oscilloscope? Forum HERE Teardown Photos: Podcast: Download