https://blog.kkessler.com/2017/03/23/transformerless-power-supply-characterization/https://blog.kkessler.com/wp-content/uploads/2017/03/testsetup.jpgTestSetuphttps://blog.kkessler.com/wp-content/uploads/2017/03/buckmodule.jpgBuckModulehttps://blog.kkessler.com/wp-content/uploads/2017/03/transformerlessps.pngTransformerlessPShttps://blog.kkessler.com/wp-content/uploads/2017/03/buckchart.pngBuckCharthttps://blog.kkessler.com/wp-content/uploads/2017/03/zap.jpgZap2017-03-23T05:04:04+00:00monthlyhttps://blog.kkessler.com/about/2015-07-17T22:04:50+00:00weekly0.6https://blog.kkessler.com/2015/06/30/how-i-make-a-pcb-part-2/https://blog.kkessler.com/wp-content/uploads/2015/06/finishedpcb.jpgFinishedPCBCompleted PCBhttps://blog.kkessler.com/wp-content/uploads/2015/06/reflowoven.jpgReflowOvenReflow Oven with Multimeter Temperature Gaugehttps://blog.kkessler.com/wp-content/uploads/2015/06/tining.jpgTiningPCB soaking in the Liquid Tin solutionhttps://blog.kkessler.com/wp-content/uploads/2015/06/soldermasklamination.jpgSolderMaskLaminationLaminator with PCB ready for development2015-06-30T05:11:27+00:00monthlyhttps://blog.kkessler.com/2014/09/19/how-i-make-a-pcb-part-1/https://blog.kkessler.com/wp-content/uploads/2014/09/etchedpcb.jpgEtchedPCBhttps://blog.kkessler.com/wp-content/uploads/2014/09/exposure.jpgExposurehttps://blog.kkessler.com/wp-content/uploads/2014/09/tining.jpgTininghttps://blog.kkessler.com/wp-content/uploads/2014/09/soldermasklamination.jpgSolderMaskLaminationhttps://blog.kkessler.com/wp-content/uploads/2014/09/etching.jpgEtchinghttps://blog.kkessler.com/wp-content/uploads/2014/09/development.jpgDevelopmenthttps://blog.kkessler.com/wp-content/uploads/2014/09/alignment.jpgAlignmenthttps://blog.kkessler.com/wp-content/uploads/2014/09/sparksensorpcb.jpgSparkSensorPCBhttps://blog.kkessler.com/wp-content/uploads/2014/09/shapeokodrilling.jpgShapeOkoDrilling2014-09-19T04:32:33+00:00monthlyhttps://blog.kkessler.com/2012/06/13/rht22-rht03/https://blog.kkessler.com/wp-content/uploads/2012/06/shaderht03.jpgShadeRHT03New location of the RHT03, under the black cover.https://blog.kkessler.com/wp-content/uploads/2012/06/sunrht03.jpgSunRHT03The RHT03 is in the container on the left with the blue top. This container also houses the MAX44009 sun sensor.https://blog.kkessler.com/wp-content/uploads/2012/06/rht03.jpgRHT03RHT03 in breadboard connected to the Saleae Logic Analyzerhttps://blog.kkessler.com/wp-content/uploads/2012/06/shademount.jpgShadeMountMount for the RHT03 to keep it out of the rain and the sun.https://blog.kkessler.com/wp-content/uploads/2012/06/screenshot.pngLogic AnalyzerNote the short pulse caused by the Arduino handling other interrupts.2015-05-12T13:15:13+00:00monthlyhttps://blog.kkessler.com/2014/03/13/2-line-lcd-display/https://blog.kkessler.com/wp-content/uploads/2014/03/lcdtool.jpgLCD Breadboard Debugging ToolLCD Breadboard Debugging Toolhttps://blog.kkessler.com/wp-content/uploads/2014/03/lcdsch.jpgLCD DebuggerLCD Debugger Schematic 2014-03-13T04:09:13+00:00monthlyhttps://blog.kkessler.com/2014/02/27/daskeyboard-repair/https://blog.kkessler.com/wp-content/uploads/2014/02/whole.jpgWholehttps://blog.kkessler.com/wp-content/uploads/2014/02/desolderedkeys2.jpgDesolderedKeyshttps://blog.kkessler.com/wp-content/uploads/2014/02/pcb.jpgPCBhttps://blog.kkessler.com/wp-content/uploads/2014/02/screws.jpgscrewshttps://blog.kkessler.com/wp-content/uploads/2014/02/keyswitch.jpgKeySwitch2014-02-28T17:58:02+00:00monthlyhttps://blog.kkessler.com/2014/02/05/telemetry-bridge/https://blog.kkessler.com/wp-content/uploads/2014/02/board.jpgBoardhttps://blog.kkessler.com/wp-content/uploads/2014/02/debugging.jpgDebuggingQuad hooked up to a logic analyzerhttps://blog.kkessler.com/wp-content/uploads/2014/02/brd.jpgbrdhttps://blog.kkessler.com/wp-content/uploads/2014/02/sch.jpgsch2014-07-09T10:55:57+00:00monthlyhttps://blog.kkessler.com/2012/06/21/sparkfun-weather-station/https://blog.kkessler.com/wp-content/uploads/2012/06/weathermeter.jpgWeatherMeterSparkfun Weather Meters in the wild2021-03-10T20:51:30+00:00monthlyhttps://blog.kkessler.com/2012/06/19/max44009/https://blog.kkessler.com/wp-content/uploads/2012/06/max44009enclosure.jpgMAX44009EnclosureThe waterproof enclosure for the MAX44009 consists of a plastic food container with a clear plastic cover, and the bottom cut out for ventilation. https://blog.kkessler.com/wp-content/uploads/2012/06/max44009.jpgMAX44009Homemade breakout board for the MAX440092014-01-31T15:00:27+00:00monthlyhttps://blog.kkessler.com/2012/06/20/mcp9700/2012-06-20T02:40:24+00:00monthlyhttps://blog.kkessler.com/2012/06/18/bmp085/https://blog.kkessler.com/wp-content/uploads/2012/06/bmp085schematic.pngBMP085SchematicBi-Directional voltage translator for the I2C bus.https://blog.kkessler.com/wp-content/uploads/2012/06/bmp085.jpgBMP085BMP085 breakout board soldered into my weather station interface board2013-03-20T15:06:47+00:00monthlyhttps://blog.kkessler.com/2011/06/21/logger-shield-and-freqcounter-for-the-mega-2560/https://blog.kkessler.com/wp-content/uploads/2011/06/megalogger.jpgMegaLoggerhttps://blog.kkessler.com/wp-content/uploads/2011/06/choppedpins.jpgChoppedPins2015-04-22T15:14:09+00:00monthlyhttps://blog.kkessler.com/2011/05/24/the-sensor-pcb/https://blog.kkessler.com/wp-content/uploads/2011/05/pcbmistake.jpgPCB MistakeFixed mistakes in the PCB designhttps://blog.kkessler.com/wp-content/uploads/2011/05/pcbandarduino.jpgPCB And ArduinoPCB And Arudino with the Logger Shieldhttps://blog.kkessler.com/wp-content/uploads/2011/05/pcbnaked.jpgPCB https://blog.kkessler.com/wp-content/uploads/2011/05/garduinopcb-v10.pngGarduinoPCB-V10Garduino Schematic2014-09-11T11:40:57+00:00monthlyhttps://blog.kkessler.com/2011/05/31/garduino-software/2011-06-22T02:19:29+00:00monthlyhttps://blog.kkessler.com/2011/05/16/solar-power/https://blog.kkessler.com/wp-content/uploads/2011/05/garduinocase.jpgGarduino Casehttps://blog.kkessler.com/wp-content/uploads/2011/05/powersupply.jpgDC Switching Power Supplyhttps://blog.kkessler.com/wp-content/uploads/2011/05/garduinocaseinside.jpgGarduino Power componentshttps://blog.kkessler.com/wp-content/uploads/2011/05/panelbracket.jpgPanel Brackethttps://blog.kkessler.com/wp-content/uploads/2011/05/panelfront.jpgSolar Panel2011-05-17T03:38:47+00:00monthlyhttps://blog.kkessler.com/2011/05/15/project-garduino/https://blog.kkessler.com/wp-content/uploads/2011/05/garduinochart1.pngGarden Datahttps://blog.kkessler.com/wp-content/uploads/2011/05/garduinochart.pngGarden Datahttps://blog.kkessler.com/wp-content/uploads/2011/05/gardens.jpgGardens2022-10-28T21:38:31+00:00monthlyhttps://blog.kkessler.comdaily1.02022-10-28T21:38:31+00:00