https://reibot.org/2023/07/22/2-watt-lora-range-test/https://reibot.org/wp-content/uploads/2023/07/image-6.pngimage-6https://reibot.org/wp-content/uploads/2023/07/image-5.pngimage-5https://reibot.org/wp-content/uploads/2023/07/image-4.pngimage-4https://reibot.org/wp-content/uploads/2023/07/image-3.pngimage-3https://reibot.org/wp-content/uploads/2023/07/image-2.pngimage-2https://reibot.org/wp-content/uploads/2023/07/image-1.pngimage-1https://reibot.org/wp-content/uploads/2023/07/image.pngimage2023-11-29T23:28:04+00:00monthlyhttps://reibot.org/2017/07/23/loduino-low-power-arduino-with-fcc-certified-lora-radio/https://reibot.org/wp-content/uploads/2017/07/2017-07-25t04-13-38-767z-u-fl-cad-png-855x570_q85_pad_rcrop.jpg2017-07-25T04-13-38.767Z-u.fl cad.png.855x570_q85_pad_rcrophttps://reibot.org/wp-content/uploads/2017/07/loraduinoschematic.pngLoDuinoSchematicLoDuino Schematichttps://reibot.org/wp-content/uploads/2017/07/loduinosetup-5.pngLoDuinoSetup-5https://reibot.org/wp-content/uploads/2017/07/loduinosetup-4.pngLoDuinoSetup-4https://reibot.org/wp-content/uploads/2017/07/loduinosetup-3.pngLoDuinoSetup-3https://reibot.org/wp-content/uploads/2017/07/loduinosetup-2.pngLoDuinoSetup-2https://reibot.org/wp-content/uploads/2017/07/loduinosetup-1.pngLoDuinoSetup-1https://reibot.org/wp-content/uploads/2017/07/main-image.pngmain imagehttps://reibot.org/wp-content/uploads/2017/07/2.jpg2https://reibot.org/wp-content/uploads/2017/07/1.jpg1LoDuino3282018-09-01T22:34:16+00:00monthlyhttps://reibot.org/2017/04/23/lora-range-test/https://reibot.org/wp-content/uploads/2017/04/20170423_14152901.jpgPager with gps attached in carPager with gps attached in carhttps://reibot.org/wp-content/uploads/2017/04/20170423_15510701-e1492982289460.jpg20170423_155107~01Lora Pagerhttps://reibot.org/wp-content/uploads/2017/04/2017-04-23-15_09_59-google-earth.pnglora range testFind the line of sight path!https://reibot.org/wp-content/uploads/2017/04/2017-04-23-15_08_36-google-earth.pngLora testyellow line represents basestation to tag largest distance2017-08-11T03:33:54+00:00monthlyhttps://reibot.org/about/https://reibot.org/wp-content/uploads/2011/05/20160706_22444601.jpg20160706_22444601Example of a pcbhttps://reibot.org/wp-content/uploads/2011/05/img_03071.jpgLindsay and ILindsay and Ihttps://reibot.org/wp-content/uploads/2011/05/n506127765_794065_3495.jpgIt's MEEhttps://reibot.org/wp-content/uploads/2011/05/wavetek116new.jpgwavetek116newWaveTek 116https://reibot.org/wp-content/uploads/2011/05/benchtop-psu.jpgbenchtop psuhttps://reibot.org/wp-content/uploads/2011/05/oscilloscope.jpgoscilloscopehttps://reibot.org/wp-content/uploads/2011/05/me1.jpgme1https://reibot.org/wp-content/uploads/2011/05/me21.jpgme2https://reibot.org/wp-content/uploads/2011/05/me2.jpgme2https://reibot.org/wp-content/uploads/2011/05/mudkips-warrior.jpgmudkips warrior2024-04-01T20:09:46+00:00weekly0.6https://reibot.org/2012/09/02/easy-high-voltage/2017-05-31T01:55:08+00:00monthlyhttps://reibot.org/2014/06/20/senior-design/2017-05-31T01:52:17+00:00monthlyhttps://reibot.org/2011/05/30/asee-2011-competition/2019-11-12T16:36:03+00:00monthlyhttps://reibot.org/2017/01/16/pager-duino/https://reibot.org/wp-content/uploads/2017/01/screenshot_2017-01-08-15-21-1901.pngscreenshot_2017-01-08-15-21-1901https://reibot.org/wp-content/uploads/2017/01/20170116_13273401.jpg20170116_132734012022-03-26T20:08:33+00:00monthlyhttps://reibot.org/2014/11/17/venturing-into-quadcopters/https://reibot.org/wp-content/uploads/2014/11/20141116_233356.jpg20141116_233356https://reibot.org/wp-content/uploads/2014/11/20141116_233219.jpg20141116_2332192017-04-20T02:03:56+00:00monthlyhttps://reibot.org/2017/01/16/nixie-clocks/https://reibot.org/wp-content/uploads/2017/01/20160520_185557.jpg20160520_185557https://reibot.org/wp-content/uploads/2017/01/20151001_172931.jpg20151001_172931https://reibot.org/wp-content/uploads/2015/12/4nixietubemainboard.jpg4nixieTubeMainBoardMain circuit schematic of the 4 tube nixiehttps://reibot.org/wp-content/uploads/2015/12/4nixietubetubepinout.jpg4nixieTubeTubePinoutpinout mapping of nixie tubehttps://reibot.org/wp-content/uploads/2015/12/4nixietubeindividualtubeschem.jpg4nixieTubeIndividualTubeSchemEach individual nixie tube schematichttps://reibot.org/wp-content/uploads/2015/12/4nixietubeprotolayout.jpg4nixieTubeProtoLayouthttps://reibot.org/wp-content/uploads/2015/10/singletubenix3.jpgSingleTubeNix3Schematichttps://reibot.org/wp-content/uploads/2015/10/singletubenix2.jpgSingleTubeNix2Pinout and some key componentshttps://reibot.org/wp-content/uploads/2015/10/singletubenix1.jpgSingleTubeNix1Lethal Nixie Clock2019-10-09T10:08:47+00:00monthlyhttps://reibot.org/2015/10/04/3d-printed-minigun/https://reibot.org/wp-content/uploads/2015/10/minigun.pngminigun2015-10-04T17:54:22+00:00monthlyhttps://reibot.org/2011/12/26/linear-resistive-divider-for-the-adc/https://reibot.org/wp-content/uploads/2011/12/resistive-sheet.jpgresistive sheetEquations required with explanation. https://reibot.org/wp-content/uploads/2011/12/resistor-divide.jpgresistor divideThe two resistors standing up are both 10k. Two 10k resistors in parallel are equivalent to 5k.https://reibot.org/wp-content/uploads/2011/12/circuit-sheet.pngcircuit sheetCircuit sheet with equationshttps://reibot.org/wp-content/uploads/2011/12/vdivide-eqn.jpgVdivide eqn paperCircuit and deriving the equations. https://reibot.org/wp-content/uploads/2011/12/vdivide.jpgVdivideChanging -24v to 24v into ~ 0 to 5v2016-10-03T12:26:50+00:00monthlyhttps://reibot.org/2011/08/07/intro-to-boost-converter/https://reibot.org/wp-content/uploads/2011/08/boostbasicschematic1.pngboostbasicschematicBasic overview. Original image from Wikipedia.https://reibot.org/wp-content/uploads/2011/08/boost-converter-neon.jpgboost converter neonNeon light!https://reibot.org/wp-content/uploads/2011/08/boost-converter-pic2.jpgboost converter pic2boost converter circuithttps://reibot.org/wp-content/uploads/2011/08/boost-pic1.jpgboost pic1Driving some little neon lightshttps://reibot.org/wp-content/uploads/2011/08/boost-converter.pngboost converter circuitSchematic, C1, C2 are 12V. C3 must be rated for high voltage output. https://reibot.org/wp-content/uploads/2011/08/equations1.pngboost equationsBasic inductor and boost converter equations. D is the duty (0 fully off, 1 fully on)2017-03-26T22:50:23+00:00monthlyhttps://reibot.org/2013/08/16/bode/https://reibot.org/wp-content/uploads/2013/08/breadboard.jpgbreadboardCompleted circuithttps://reibot.org/wp-content/uploads/2013/08/aaaa1.pngaaaaahttps://reibot.org/wp-content/uploads/2013/08/bbbb1.pngbbbbahttps://reibot.org/wp-content/uploads/2013/08/schematic.jpgschematicSchematichttps://reibot.org/wp-content/uploads/2013/08/math.jpgmathArduino mathhttps://reibot.org/wp-content/uploads/2013/08/intropic.jpgintropic2024-05-25T22:32:25+00:00monthlyhttps://reibot.org/2011/09/06/a-beginners-guide-to-the-mosfet/https://reibot.org/wp-content/uploads/2011/09/electronics-reference-sheet.jpgelectronics-reference-sheetxhttps://reibot.org/wp-content/uploads/2011/09/body-diode.jpgbody diodebody diode causing unintentional current to flow for a 5/12v psu selection circuithttps://reibot.org/wp-content/uploads/2011/09/fetbread.jpgfetBreadUCC27424, MIC4422YN, MCP1407https://reibot.org/wp-content/uploads/2011/09/fet-driver.jpgfet driverFet driver is a Half Bridgehttps://reibot.org/wp-content/uploads/2011/09/fetpwm.jpgfetpwmSee how without the driver, the fet takes longer to charge, and it peaks at 5v.https://reibot.org/wp-content/uploads/2011/09/irfp260n.jpgIRFP260N GraphIRFP260N current curves. Notice how it's linear, then saturates?https://reibot.org/wp-content/uploads/2011/09/mosfetchar.jpgmosfet chartIRFP260N gate capacitancehttps://reibot.org/wp-content/uploads/2011/09/pmosfet.jpgpMosfetP channel MOSFEThttps://reibot.org/wp-content/uploads/2011/09/nmosfet1.jpgnMosfetN channel MOSFEThttps://reibot.org/wp-content/uploads/2011/09/2078_5449.jpgIRFP260NIRFP260N image from warf.com2024-06-26T19:10:03+00:00monthlyhttps://reibot.org/2011/08/07/new-laser/https://reibot.org/wp-content/uploads/2011/08/green-laser-pointer-dpss-diagrams.jpgGreen-laser-pointer-dpss-diagramsGreen laser DPSShttps://reibot.org/wp-content/uploads/2011/08/techlasers-infiniti-3.jpgsimilar laserpicture of a similar laserhttps://reibot.org/wp-content/uploads/2011/08/lolwut.pnglolwuthttps://reibot.org/wp-content/uploads/2011/08/laser.jpglaser2013-02-15T07:28:35+00:00monthlyhttps://reibot.org/2012/08/26/1007/https://reibot.org/wp-content/uploads/2012/08/2012-08-26_03-52-32_196.jpg2012-08-26_03-52-32_196very simple high power variable laser driverhttps://reibot.org/wp-content/uploads/2012/08/2012-04-18_19-35-14_848.jpgwireless wii nunchuck mousewireless wii nunchuck mousehttps://reibot.org/wp-content/uploads/2012/08/2012-08-25_22-55-36_195-e1345968993464.jpgxbeexbee galore!2012-09-01T03:44:29+00:00monthlyhttps://reibot.org/2011/07/19/measuring-inductance/https://reibot.org/wp-content/uploads/2011/07/lc-breadboard.jpgLC breadboardhttps://reibot.org/wp-content/uploads/2011/07/inductordivider.jpginductorDividerAnother method that doesn't work well with Arduinohttps://reibot.org/wp-content/uploads/2011/07/lc-eqns.pngLC eqnsLC equationshttps://reibot.org/wp-content/uploads/2011/07/opampall.jpgopampAllLM741, LM339 comparisonhttps://reibot.org/wp-content/uploads/2011/07/lm339.pngLM339https://reibot.org/wp-content/uploads/2011/07/lm741.pngLM741Using LM741 op amphttps://reibot.org/wp-content/uploads/2011/07/opamp1.jpgopamp1bidirational analog to digital - using LM7412022-02-09T07:38:39+00:00monthlyhttps://reibot.org/2011/05/23/sharp-proximity-sensor-function-fitting/https://reibot.org/wp-content/uploads/2011/05/schematicresistive_divider.pngSchematicResistive_dividerhttps://reibot.org/wp-content/uploads/2011/05/voltage-divider-equation.pngvoltage divider equationVoltage divider equation (wikipedia)https://reibot.org/wp-content/uploads/2011/05/sharpdatasheetcutout.jpgSharpDataSheetCutouthttps://reibot.org/wp-content/uploads/2011/05/sharplongrange.jpgsharpLongRangeLong range Sharp Sensor https://reibot.org/wp-content/uploads/2011/05/sharpfit.pngsharpFitsharp Fitting 2012-02-17T17:43:25+00:00monthlyhttps://reibot.org/2012/01/04/self-balancing-robot/https://reibot.org/wp-content/uploads/2012/01/balance-logic-analyzer.jpgbalance logic analyzerTalking to two I2C devices with the same address - Had to include my new tool!https://reibot.org/wp-content/uploads/2012/01/cmoplimentfilter.jpgcmoplimentFilterComplimentary filterhttps://reibot.org/wp-content/uploads/2012/01/seg1.jpgseg1Ugly! Accelerometer in wii nunchuck, Wii motion plus on the right side2014-09-23T04:54:45+00:00monthlyhttps://reibot.org/2011/10/01/sd/https://reibot.org/wp-content/uploads/2011/10/jacksdoor.jpgJacksDoorHis door unlocker.https://reibot.org/wp-content/uploads/2011/10/dooropener.jpgdooropenerNot much of a circuit required!https://reibot.org/wp-content/uploads/2011/10/ma.jpgma2022-10-11T09:44:30+00:00monthlyhttps://reibot.org/2011/05/28/color-detection-with-arduino-for-under-5/https://reibot.org/wp-content/uploads/2011/05/photoresistorplot.jpgphotoresistorPlothttps://reibot.org/wp-content/uploads/2011/05/colortubes.jpgcolorTubeshttps://reibot.org/wp-content/uploads/2011/05/colorsensor3.jpgColorSensor3black tape behind photoresistorhttps://reibot.org/wp-content/uploads/2011/05/sensorpictures.jpgsensorPictureshttps://reibot.org/wp-content/uploads/2011/05/taos2.jpgtaos2https://reibot.org/wp-content/uploads/2011/05/photoresitorspectrals1.jpgphotoresitorSpectrals1https://reibot.org/wp-content/uploads/2011/05/photoschem2.pngphotoSchem2Schematic: Click to enlargehttps://reibot.org/wp-content/uploads/2011/05/taos1.jpgtaos12014-05-08T18:59:43+00:00monthlyhttps://reibot.org/2011/07/06/tcs3200/https://reibot.org/wp-content/uploads/2011/07/tcs3200wiring.jpgTCS3200 WiringTCS3200 Wiringhttps://reibot.org/wp-content/uploads/2011/07/tcs3200spectrals.jpgTCS3200SpectralsSpectral and pins from datasheethttps://reibot.org/wp-content/uploads/2011/07/tcs3200blockdiag.jpgtcs3200BlockDiagImage from TCS3200 datasheethttps://reibot.org/wp-content/uploads/2011/07/tcs3200d.jpgTCS3200Dimage from emartee2017-09-18T22:55:27+00:00monthlyhttps://reibot.org/2011/05/23/measuring-resistance-or-voltage-with-1-digital-io/https://reibot.org/wp-content/uploads/2011/05/rc-timenew.pngRC-TIMEnewhttps://reibot.org/wp-content/uploads/2011/05/rcresistivemeasure.pngRCresistiveMeasurehttps://reibot.org/wp-content/uploads/2011/05/rc-voltagecalculation.pngRC voltageCalculationhttps://reibot.org/wp-content/uploads/2011/05/2011-05-23_02-19-00_132.jpg2011-05-23_02-19-00_132https://reibot.org/wp-content/uploads/2011/05/rcschematic.pngRCschematichttps://reibot.org/wp-content/uploads/2011/05/rccharging.pngRCcharging2022-09-29T14:09:53+00:00monthlyhttps://reibot.orgdaily1.02024-06-26T19:10:03+00:00