Another look at finding a $50 analog oscilloscope on ebay. Forum HERE Podcast: Download

Dave tears down and takes a look at the classic 1980 Tandy / Radio Shack TRS-80 Colour Computer. Includes hacking a composite video output circuit to get it working on a modern HDMI computer monitor. Service Manual With Schematics Forum HERE Manuals HERE Podcast: Download

Is a $7 LCR Meter / Component Tester from Ebay any good? Dave tests the M328 (LCR-T4) model component tester. HUGE Forum Thread Forum summary videos HERE This group seems to maintain a version of the firmware: Podcast: Download

Dave gets IoT angry in this Mailbag Forum HERE SPOILERS: Bolt IoT challenge Dave to get an Internet Of Things App working in 5 minutes. Will he do it or will he lose his collective… Arduino based DIN rail PLC controller, the Controllino Total Solar Eclipse Stamps Polish 1980’s teardowns …

David explains PID controllers. First part of a mini-series on control theory. Forum HERE Podcast: Download