R. X. SegerMy experience with Kickstarter as a backerKickstarter is a popular crowdfunding platform, an American public-benefit corporation whose mission is to “bring creative projects to…Apr 25, 2019Apr 25, 2019
R. X. SegerA look back at nine months of bloggingIn this 44th blog post of mine on Medium, I figured I’d take the opportunity to reflect on the articles written over the past nine months…Feb 27, 20171Feb 27, 20171
R. X. SegerSalvaging and organizing electrolytic capacitorsA brief follow-up to Organizing electronic components, in this article I’ll improve the organization of my electrolytic capacitors, and add…Jan 30, 20171Jan 30, 20171
R. X. SegerReverse-engineering the pinout of vacuum-fluorescent displays (VFDs): HNV11SS27, FIP7FM7, and…Popular in DVD/VCR players, as in Salvaging a Samsung DVD-M101 Player: the vacuum fluorescent display. A glorified vacuum tube, VFDs…Jan 23, 20173Jan 23, 20173
R. X. SegerVoltage regulators revisted: LM317M, 7812, MCP170x, MIC5219, and ICL7660Power is required by all electronic circuits, usually supplied by a voltage regulator. A wide variety of regulator integrated circuits are…Dec 28, 2016Dec 28, 2016
R. X. Seger4x7-segment LED display as a digital clock using two 74HCT595 8-bit shift registersThis is a follow up to Building a 4-bit shift register from 7400 NAND gates for GPIO output port expansion on a Raspberry Pi, building a…Dec 25, 2016Dec 25, 2016
R. X. SegerBuilding a 4-bit shift register from 7400 NAND gates for GPIO output port expansion on a Raspberry…In my various experiments with the Raspberry Pi, I’ve hit a limitation: the number of unused general-purpose I/O ports available. Quite a…Dec 18, 20161Dec 18, 20161
R. X. SegerExploring ternary logic: ternary logic probeWhen working with digital circuits, a logic probe can be a very useful device. You can use the probe to quickly read logic levels of…Dec 17, 2016Dec 17, 2016
R. X. SegerExploring ternary logic: TNAND and TAND gatesTernary logic circuits resemble binary logic circuits, but with three logic levels instead of only two. In this article I’ll build a TNAND…Dec 13, 20162Dec 13, 20162
R. X. SegerDIY fume extractor for soldering safelySoldering is essential for working with electronics, but the smoke from vaporizing flux isn’t something you want to breathe. CDC: rosin…Nov 30, 2016Nov 30, 2016