A tutorial on how to read timing diagrams. An essential skill for designing and understanding digital logic, FPGA and microcontroller designs and datasheets. Forum HERE Podcast: Download
Read More »EEVblog #1248 – INSANE! A 0.02% Process Meter for $9? WTF!
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 …
Read More »EEVblog #1247 – DDR Memory PCB Propagation Delay & Layout
When does PCB propagation delay matter in PCB layout? Dave goes down the rabbit hole from DIY TTL processor design to DDR memory design and layout. DDR memory termination. What is a timing budget? When is it important? How does signal integrity matter? When do you have to do serpentine …
Read More »EEVblog #1246 – Dumpster TV to Retro RGB Monitor Conversion
How to convert a dumpster Sony CRT TV into a retro computer RGB monitor. Going through the design considerations, schematics, datasheets and the “jungle chip” and how to feed in the RGB signal and switch it. Also a look at the the old school CGA video interface on an IBM …
Read More »EEVblog #1245 – A Most Excellent REPAIR: IBM PCjr Keyboard
Can you find the fault in the IBM PCjr wireless keyboard before Dave does? A most excellent adventure in troubleshooting. Forum HERE Podcast: Download
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