Hacker News
- Math, Physics, and Engineering Applets http://falstad.com/mathphysics.html 22 comments
- Original Pong did not have any code or even a microprocessor https://www.falstad.com/pong/ 144 comments
- Paul Falstad's Math and Physics Applets https://falstad.com/mathphysics.html 3 comments
- Pong Circuit-Level Simulation https://www.falstad.com/pong/vonly.html 38 comments
- Electronic Circuit Simulator in the Browser https://www.falstad.com/circuit/circuitjs.html 134 comments
- Dipping your fingers in molten lead [pdf] http://www.falstad.com/cgi-bin/go.pl?http%3A%2F%2Fwww.wiley.com%2Fcollege%2Fphy%2Fhalliday320005%2Fpdf%2Fleidenfrost_essay.pdf= 16 comments
- Evidently teaching physics is hard http://www.falstad.com/gravity.html 46 comments
- Falstad Circuit Simulator integrated with Arduino Simulator! https://falstad.com/circuit/avr8js/ 5 comments arduino
- Weird problem with SMD tantalum capacitor in a detector circuit. https://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l5AmALATjejGAcIDMWFoB2ANgQFYCwlc1ISkQSURzXJWBTAWjDACgALkyIIQFEiCKRGE8SF5RoJSKSyQsuSGBRIkJUktwJclLEiwla5NEjC4QSBBwDOABwCWAYx4ATTgBmAIYArgA2gvwATkzkknIkceAoYhy4WvDRUs7iotlp5Kng8JD8AO6x8UkGYnKlFdKySByiHMgcpQBK+clireAIOB2OadAOwzDk-ADmPaZ9ObgkQ1DlPQh5jbmp-F6V4tUaB5IcYDw4hAS4YMxIRHcoWI+4REpwAjEqF0nkesdQxRKu1Yfzk5DAtSSbWgzhKcJKuB4LF4SGg5GktBSJDA5HoRF+b20MykyzwhRJOCWK1KVJAmlqeSw6m2ANKzQcKRwzLQYmawwhAH0IVgBZABQAPLB8QXkAUkaBIAW8AUIUVopVEXBC1Va1WlWa-RjzEFG0kdNb0llqFn1dabUkbHYNHI6MSJSSu1YxS2OunGMlFMDw4mW42hs2rXyOG54JZ4cx4GTyfzBcKRKN2STpSR6SlJsQp0IRfgZiyJxiZlkFwJF9Pxo1Jyu+6up4sAN3rIw4ua7AIguPA8rYEzRa3wFbgna0jFtPb5jjL09Ws0r2ejWfJ5piqCqOZQG8DQJX+4DjhPtPNFSbeSbULWt73u9WV5PYIh-xppK+Axw35P5vZTtmTiNpkABdIhRIUUJSlPhVVlINCEVZVVTAaCIK1XFRX4F4WhdFJ1macBiLZSAHHxMRuXfT0Ckg6DmhQIgBVlGA4GuCglTQnVZVwLJ0Q9Aj+J-PtgwNQxPSE5xqTWb8EiOYVnyYeTBlYcSVNKZwWGtX1rWNDpYBKTAjMwPBYBxFBVHdZwcQQKxCQgJB+BcJSLiZE1xDc04QGCMIXE4YFDVPQLBhWQhYXheEEHOJRCgYXBmieBAbgs9SDIECpZLc2S73wcRGAAMQgU42g4RQAFkgnFAAdFwADUAHsIiCaZ-KAA 6 comments embedded
- monitor high voltage pulse without damaging components https://falstad.com/circuit/circuitjs.html?ctz=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-pqtH9vGC5XjJD6WJswQAJhM43tfkG+BnGKiAIYAVwANgAXNhcjFYo5kaxHCMl8ssxjhtjcMQAL0YADtGCETOACURDmsSA9MFP4JgWGZJLBvV6UzxwGwe9QGni8x8xHw+4Ph9x2gC-iA4cD2le-DZ-XUfjujufzM2zw1-Xu1yC7JBRkif4Ac2CwdI0whSKM-SPvkTSQeBAzdiAR5DswSAQHI47wlOOyznA87MIuPCwIQ+AIBoUikRYkDmkgJyoJuQHmDUTH9IeA6ofo5SvrugIaBGdQAPY8BArwxAaox0cuNH4K6mB0XYInrsqABqWq6mwwnYJeYiyKsYCKOG0AYYp2nmgqLLCppdijGJsxnES0i4Ha3DqAgHryY5gRIKkNnrihISnkAA 5 comments arduino
- Original Pong did not have any code or even a microprocessor -- overview and simulation by pfalstad https://www.falstad.com/pong/ 18 comments programming
- Simple current controlled multivibrator from two inverters https://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l3BWcMBMcUHYMGZIA4UA2ATmIxAUgpABZsKBTAWjDACgBJEFBQ73kNgQp+fKjCTZOg4YLw1RcheOiS2Ac3Ao8tbCLDbaNHeLYBjRTz5WlUKLHiRSzl69L3MkbBhoZiYPH8MK2UHdgshERtImREVRyc3JPcmVHxebFYMA2JIFBpiHRQ2ABNFMAxrARsREoYAMwBDAFcAGwAXUto4cEruqmx5bhA6prbOgHd+2xjB5TYpmwq+Gh7lqDYASy0ddaW++MgwQi6agQMi6pGGlo62ADcd3X1DGPFuwTsVBAWnmIvFJBTngdP9XrJajdxr9ZrJZkMgVMAesATZEdwQbEsW82AB7WggQjKbrubAOSDGHiBXBeSh8BDQY4IMCQDCQQh6FAoMCDOwiBRSfH0Il2VbuFCqQTQfTDehSXnEEAAMQg7xgeRALBAAGFmgAnPUMAB2nSAA 2 comments electronics
- Feedback Adapter for Robot AC Servo Motor https://www.falstad.com/circuit/ 2 comments electronics
- what is the issue with my code that causes the green LED to turn on randomly, stay on, but the red LED never turns on? https://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l3BWcMBMcUHYMGZIA4UA2ATmIxAUgpABZsKBTAWjDACgA3WmvEbBFN154qo2lTCCxMBGwDuIFAkKKUNRcpAio8jSu00eW0WxpgkSlZb18BUKNCQQY5h65iQpsJzq5hCVNiEvP5UKGr2VDRUSNKObABO4AGq6tbh6hLwuqF8weAYKkG8kDmFebxoldE6ACZ8kOr8grhpmoK1DABmAIYArgA2AC661s0NTXalCq22goa849MTNumapdFh+Io16TXOADoAzizHTDCESjRqnthkeHgYrGcXeIQIxGAEdwisX3jHMBwY6dXqDIZQM5gY4eQisQhYUhkDJYBAvaAibB0QjYcxYzEIbCA4FHUH9YYgFhsAD2Wj4UnEpEUVEI0Eyijp2DYQA 15 comments arduino
- how to use an external power source with a BJT to drive a motor with arduino without causing the larger power source to cause a reverse voltage on the arduino, which would destroy it? https://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l3BWcMBMcUHYMGZIA4UA2ATmIxAUgpABZsKBTAWjDACgA3WmvEbBFN154qo2lWJQpMBGwAuITILS9cNRfikQYeMJGL8ExBDUwYEGdTpqRzxFDRskUSinBAATBgDMAhgFcAGzk2GjAkNRARPkh1MHtpaCRtaHCoVKQYSEEs5Kg2AHcY9WjHYVFC4sUHKv4cysi6oT4BfK4VFuVNDrEbajEZSo7hjC7eSEqWQiroyImAJw1VVsbWqnYPariElxKqQS8-IJCi3aiqSOiJosj45Rq7-KA 6 comments arduino
- 3 level buck converter power stage http://www.falstad.com/circuit/circuitjs.html?ctz=CQAgjCAMB0l3BWc0AcAWA7ATgSgbJHmHFigniApJZdQgKYC0YYAUAMYgBM53vPFLhi5QosSBC7QkUhKwBmIAMxKKYAsoQj11JduljIXBctXc0ured36kMIyZUU9lkS+W3DxxU5AXXfnAeyHawxgDumtoYzlZckChQrJFKcbypIkIikMlRprFueIk5AOZ5aHho5SjUtbkZfurllUkpcQl8gh05kQLcHX19PZ3cwiOqxbl9E3kzOQBKeTX5IFgUtYE0GzBybSLLDWBoVTkANn56oyLHiVmiMBB1nOTUXCiJLx7b4o8-hhL1OJjNCXO7DT53CHvJJlT4zOHoe65OHxSgaOaAzJjBpKSAnTH9RINLhcfF7ZRFWaI8EaO54fhjYY3K5o16M1iLeKJHTcUngDSvcBBYj3MQ8DmE6y8qqkjbaYUbJTQI5gBBYLj01IoLDYJRi3YrHlc-l1FJmWWSi3DemCMY2r4wkD2pSI+3+JGRZ1WZ3U1gAJyd6VRXuyfBMxotLQtlzABnsxgD1BYoaOJyFcAlNlEaGK2aT2zEBqzSbA2VYZSjvCjjNaolTomNwxsujM7ibktefIW4FLwWTflz1AsW3u0n9Pe0vf7pdzxAzkX7ManvZyimNPPrPJjcbCuWnbwn4GOtf77t87uG0+Pp6Cl6n14f+LKm5iR6qYHVHobXYd7ZJVSjLtWAAe3ADAnTTCwsCwMQlFLUJIDscBWCAA 10 comments electronics
- Falstad Circuit Simulator https://www.falstad.com/circuit/ 4 comments electronics
- If anyone needs a simple circuit simulator... https://www.falstad.com/circuit/circuitjs.html 16 comments electronics
- (Falstad simulator) Posted a year ago, but I figure it's worth seeing every once in a while. For those who struggle with math and/or visualizing circuit operation, this resource helps with the learning process. http://www.falstad.com/circuit/ 17 comments electronics
- Followup: Using an NPN BJT to level shift 3.3v to 5v http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.634267539816555+43+2+50%0A172+-64+0+-336+0+0+6+5+5+0+0+0.5+High+Voltage%0Ar+-176+128+-240+128+0+18000%0Aw+-128+80+-128+112+0%0Aw+-128+144+-128+240+0%0Aw+48+80+-64+80+3%0Ar+-64+0+-64+80+0+10000%0Aw+-128+80+-64+80+1%0Ag+-288+240+-320+240+0%0Aw+-240+240+-288+240+1%0AM+48+80+336+80+4+3.3%0AM+0+-112+336+-112+4+3.3%0Aw+-176+-112+-112+-112+1%0Ar+-112+-192+-112+-112+0+10000%0Aw+0+-112+-112+-112+3%0A172+-112+-192+-336+-192+0+6+5+5+0+0+0.5+High+Voltage%0Ad+-176+-112+-240+-112+1+0.805904783%0Aw+-240+-112+-288+-112+2%0AL+-240+128+-336+128+0+1+false+3.3+0%0At+-176+128+-128+128+0+-1+3.3147575749984495+-0.5209302176236181+100%0Ar+-240+240+-128+240+0+47%0AL+-288+-112+-336+-112+0+1+false+3.3+0%0AM+96+544+336+544+0+3.3%0Aw+-208+352+-32+352+0%0AL+-208+352+-320+352+0+1+false+3.3+0%0Aw+-32+544+96+544+3%0Aw+-32+352+-32+416+3%0AR+-224+544+-320+544+0+0+40+5+0+0+0.5%0AR+-224+432+-320+432+0+0+40+3.3+0+0+0.5%0Ar+-96+544+-224+544+0+1000000%0Ar+-224+432+-96+432+0+1000000%0Aw+-32+448+-32+544+3%0At+-96+432+-32+432+1+1+-1.699999849999804+4.999999791976961e-8+100%0Aw+-96+544+-32+544+0%0A 7 comments arduino
- Falstad's online electronic circuit simulator with library of examples http://www.falstad.com/circuit/ 6 comments electronics
- Interactive demo of 74HC595 SIPO Shift Register and Tutorial (In case anyone has been wondering how these work or how to use them.) http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+5.459815003314424+50+5+50%0Ax+171+216+204+219+0+24+DS%0Ax+555+99+1198+102+1+48+Chaining+SIPO+Shift+Registers%0AR+256+336+128+336+1+2+80+2.5+2.5+-0.5235987755982988+0.5%0AR+112+208+112+176+0+2+40+2.5+2.5+0.7853981633974483+0.25%0Aw+144+224+256+224+0%0AR+112+240+112+272+0+2+20+2.5+2.5+0.7853981633974483+0.5%0Ax+33+166+89+169+0+12+10101010%0Ax+34+261+89+264+0+12+10011001%0A189+256+272+336+272+0%0A189+576+272+592+272+0%0AS+144+224+112+224+0+1+false+0+2%0Aw+256+336+256+368+0%0Aw+256+368+576+368+0%0Aw+576+368+576+336+0%0Aw+544+240+576+240+0%0Aw+576+240+576+304+0%0Aw+256+224+256+304+0%0AM+320+240+320+208+0+2.5%0AM+352+240+352+208+0+2.5%0AM+384+240+384+208+0+2.5%0AM+416+240+416+208+0+2.5%0AM+448+240+448+208+0+2.5%0AM+480+240+480+208+0+2.5%0AM+512+240+512+208+0+2.5%0AM+544+240+544+208+0+2.5%0AM+640+240+640+208+0+2.5%0AM+672+240+672+208+0+2.5%0AM+704+240+704+208+0+2.5%0AM+736+240+736+208+0+2.5%0AM+768+240+768+208+0+2.5%0AM+800+240+800+208+0+2.5%0AM+832+240+832+208+0+2.5%0AM+864+240+864+208+0+2.5%0A189+896+272+960+272+0%0Aw+864+240+896+240+0%0Aw+896+240+896+304+0%0Aw+896+336+896+368+0%0Aw+896+368+576+368+0%0AM+960+240+960+208+0+2.5%0AM+992+240+992+208+0+2.5%0AM+1024+240+1024+208+0+2.5%0AM+1056+240+1056+208+0+2.5%0AM+1088+240+1088+208+0+2.5%0AM+1120+240+1120+208+0+2.5%0AM+1152+240+1152+208+0+2.5%0AM+1184+240+1184+208+0+2.5%0AM+1504+240+1504+208+0+2.5%0AM+1472+240+1472+208+0+2.5%0AM+1440+240+1440+208+0+2.5%0AM+1408+240+1408+208+0+2.5%0AM+1376+240+1376+208+0+2.5%0AM+1344+240+1344+208+0+2.5%0AM+1312+240+1312+208+0+2.5%0AM+1280+240+1280+208+0+2.5%0Aw+1216+368+896+368+0%0Aw+1216+336+1216+368+0%0Aw+1216+240+1216+304+0%0Aw+1184+240+1216+240+0%0A189+1216+272+1280+272+0%0Ao+4+32+0+2086+5+0.00009765625+0+-1+0+DS%0Ao+2+32+0+2086+5+0.00009765625+0+-1+0+SHCP%0A 10 comments arduino
- Circuit simulation (Falstad) of Button Bounce and Debouncing! http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000001+9.78399845368213+76+3.3+50%0AR+784+624+800+624+0+1+1000+0.5+1.5+0+0.5%0Ar+720+544+720+624+0+1000000%0Aw+640+432+608+432+0%0Aw+752+320+640+320+0%0Ax+764+121+1226+124+0+36+Arduino+or+Raspberry+Pi+3.3v%0Aw+640+320+608+320+0%0Ax+754+565+803+583+0+12+Electrical%5CnNoise%0Aw+944+208+1024+208+0%0Aw+544+208+640+208+0%0Aw+640+208+752+208+0%0Ar+752+272+752+320+0+100000%0A207+640+208+640+176+0+3.3v+Pin%0A207+640+320+640+288+0+GPIO+Input+Pin%0Aw+1120+384+1120+432+0%0Aw+1184+432+1184+384+0%0Aw+1120+432+1184+432+0%0Aw+1056+432+1120+432+0%0Aw+1024+432+1056+432+0%0Aw+1024+384+1024+432+0%0Aw+1184+208+1184+256+0%0Aw+1120+208+1184+208+0%0Aw+1120+208+1120+256+0%0Aw+1024+208+1120+208+0%0Aw+1024+208+1024+256+0%0AM+1264+320+1296+320+0+2.5%0Aw+1184+320+1184+352+0%0Aw+1184+288+1184+320+0%0Af+1136+272+1184+272+1+1.5+0.02%0Af+1136+368+1184+368+0+1.5+0.02%0Aw+1136+320+1136+368+0%0Aw+1136+320+1136+272+0%0Aw+1120+320+1136+320+0%0Aw+976+368+976+320+0%0Aw+976+272+976+320+0%0Ar+1056+320+1056+432+0+1000%0Ac+1024+320+1056+320+0+1e-9+4.714285358309041e-7%0Aw+1120+320+1120+352+0%0Aw+1120+288+1120+320+0%0Af+1072+368+1120+368+0+1.5+0.02%0Af+1072+272+1120+272+1+1.5+0.02%0Aw+1072+320+1072+368+0%0Aw+1072+320+1072+272+0%0Aw+1056+320+1072+320+0%0Ag+1024+432+1024+464+0%0AR+1024+208+1024+160+0+0+40+3.3+0+0+0.5%0Aw+1024+320+1024+352+0%0Aw+1024+288+1024+320+0%0Af+976+368+1024+368+0+1.5+0.02%0Af+976+272+1024+272+1+1.5+0.02%0Aw+784+432+1024+432+0%0Aw+640+432+784+432+0%0A207+640+432+640+400+0+GND+Pin%0A165+816+256+864+256+2+0%0Ar+944+208+944+288+0+100000%0AI+944+320+976+320+0+0.5+5%0Aw+816+320+816+352+0%0Aw+816+368+816+352+0%0Aw+816+368+816+384+0%0Aw+752+208+880+208+0%0Aw+880+208+944+208+0%0Aw+880+208+880+224+0%0As+752+272+752+208+0+1+false%0Aw+1184+320+1264+320+0%0A207+1264+320+1264+352+0+GPIO+FALLING+Interrupt%0Aw+752+320+816+320+0%0Av+720+624+784+624+0+4+10000+1.5+0+0.7853981633974483+0.5%0Ax+696+245+735+278+0+12+Internal%5CnPullup%5CnEnable%0As+720+544+816+544+0+0+false%0Aw+816+496+816+384+0%0Aw+816+496+816+544+1%0Ab+1199+501+792+145+0%0As+448+432+448+320+0+1+true%0Aw+544+320+608+320+0%0Aw+448+432+544+432+0%0Ar+544+320+544+208+0+10000%0Aw+448+208+544+208+0%0Aw+448+320+544+320+0%0Aw+544+432+608+432+0%0Ax+469+364+598+397+0+12+Click+switch+a+few+times%5Cnto+simulate+bounce%5Cnthen+hold+down.%0Ax+446+271+526+274+0+12+Pullup+resistor%0Ao+5+64+0+2082+3.8272525864510487+0.00007475102707912206+0+-1+0%0Ao+24+64+0+2082+5+0.00009765625+0+-1+0%0A 10 comments arduino
- Interactive circuit simulation Demo of Floating GPIO Pin, Noise, and why you need pullup resistors! http://www.falstad.com/circuit/circuitjs.html?cct=$+0+0.000005+10.20027730826997+50+5+50%0Af+976+256+1040+256+1+1.5+0.02%0Af+976+352+1040+352+0+1.5+0.02%0Aw+1040+272+1040+304+0%0Aw+1040+304+1040+336+0%0Aw+976+256+976+304+0%0Aw+976+304+976+352+0%0AR+1040+176+1040+128+0+0+40+3.3+0+0+0.5%0Ag+1040+432+1040+464+0%0AR+896+576+896+608+0+4+100+0.3+3+0+0.5%0Aw+896+304+976+304+1%0Ar+896+528+896+576+0+1000000%0Aw+1040+176+1040+240+0%0Aw+1040+176+912+176+0%0Aw+912+176+752+176+0%0Aw+896+304+752+304+0%0Ax+721+134+786+137+0+18+3.3v+Pin%0Ax+720+360+841+363+0+18+GPIO+Input+Pin%0Aw+1040+368+1040+432+0%0Ax+1085+273+1293+276+0+36+Raspberry+Pi%0Aw+1104+304+1168+304+0%0Aw+1168+304+1168+368+0%0A162+1168+368+1296+368+1+2.1024259+0+0+1+0.01%0Ag+1296+368+1296+400+0%0Ax+1208+403+1286+427+0+18+Script%5CnActivation%0Aw+1040+304+1104+304+0%0Aw+896+528+896+304+0%0Aw+752+304+752+336+2%0Aw+752+176+752+144+0%0Aw+752+176+720+176+0%0Aw+752+304+720+304+0%0As+512+352+624+352+0+1+true%0Ag+752+416+816+416+0%0Aw+752+416+720+416+0%0Aw+752+416+752+448+0%0Ax+722+471+793+474+0+18+GND+Pin%0Aw+512+352+512+384+0%0Aw+512+384+720+416+0%0Aw+624+352+720+304+0%0Ax+927+570+1023+600+0+24+Electrical%5CnNoise%0Ax+433+313+623+316+0+24+Pushbutton%0Ao+26+64+0+2082+5+0.00009765625+0+-1+0%0Ao+8+64+0+2082+5+0.00009765625+1+-1+0%0A 4 comments raspberry_pi
- Great website for online circuit design and simulation http://www.falstad.com/circuit/circuitjs.html 6 comments arduino
- Why doesn't this transistor let the LED current through? http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.0000049999999999999996+10.200277308269968+50+5+50%0A162+496+160+624+160+1+2.1024259+1+0+0%0At+576+400+656+400+0+1+-4.494728008484021+0.0985395451916391+100%0Av+432+448+432+160+0+0+40+5+0+0+0.5%0Aw+432+448+656+448+0%0Aw+656+416+656+448+0%0Aw+656+160+656+384+0%0Aw+624+160+656+160+0%0Aw+432+160+496+160+0%0Ar+528+400+464+400+0+0+40+5+0+0+0.5%0Ar+528+400+576+400+0+400%0A 12 comments arduino
- I know this isnt how you're supposed to do it, but why is the voltage drop on the resistor in the parallel circuit not 12v? http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.200277308269968+50+5+50%0Av+240+416+240+128+0+0+40+12+0+0+0.5%0Aw+240+128+752+128+0%0Aw+752+128+752+176+0%0Aw+752+176+688+176+0%0Aw+752+176+816+176+0%0Aw+816+176+816+208+0%0Aw+688+176+688+208+0%0Aw+688+256+688+304+0%0Aw+816+256+816+304+0%0Aw+816+304+752+304+0%0Aw+688+304+752+304+0%0Aw+752+304+752+416+0%0Aw+752+416+528+416+0%0Aw+240+416+416+416+0%0A162+688+208+688+256+1+2.1024259+1+0+0%0Ar+816+208+816+256+0+100%0Ar+416+416+528+416+0+200%0A 8 comments arduino
- Arduino circuit sanity test http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.200277308269968+50+5+43%0Ar+128+256+304+256+0+10000%0At+304+256+352+256+0+1+0.5982114553560666+0.6260606700949407+100%0Ar+352+240+352+96+0+1000%0Ag+352+272+352+304+0%0Aw+352+240+400+240+0%0AR+352+96+352+64+0+0+40+5+0+0+0.5%0AR+128+256+128+224+0+0+40+13.7+0+0+0.5%0A 3 comments arduino
- Shake On Micro Concept http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+2.5790339917193066+50+5+43%0Ar+272+304+480+304+0+1%0Ac+480+304+480+448+0+0.00021999999999999998+3.276831824922221%0Ag+480+448+480+496+0%0Ar+480+304+688+304+0+10000%0Ag+688+304+688+368+0%0AR+272+240+272+160+0+2+400+1.85+1.85+0+0.1%0Ad+272+240+272+304+1+0.045%0Ao+1+64+0+35+5+6.4+0+-1%0Ao+0+64+0+35+5+6.4+1+-1%0A 12 comments electronics
- I wish that this was how charge pumps had been explained to me http://www.falstad.com/circuit/circuitjs.html?cct=$+1+0.0000049999999999999996+2.1831051418620846+46+15+43%0A159+128+64+320+64+0+20+10000000000%0Aw+224+80+224+208+0%0Aw+224+240+224+208+0%0A159+320+256+128+256+1+20+10000000000%0Ac+320+64+320+256+2+0.000001+0.1373857387026482%0Ac+128+320+128+256+2+0.00009999999999999999+0.04962575891624186%0Aw+432+208+224+208+0%0AR+224+208+160+208+0+2+1000+5+0+0+0.5%0AR+128+64+96+64+0+0+40+5+0+0+0.5%0Ag+464+160+480+160+0%0AO+128+256+80+256+1%0AO+944+64+928+32+1%0AR+560+160+528+160+0+0+40+5+0+0+0.5%0Aw+848+208+592+208+0%0Aw+848+208+848+240+0%0Aw+848+80+848+208+0%0Ac+944+64+944+112+2+0.00009999999999999999+0.1037569896568266%0Ac+752+64+752+256+2+0.000001+-4.720802320128704%0A159+944+256+752+256+0+20+10000000000%0A159+752+64+944+64+1+20+10000000000%0AO+832+384+832+336+1%0Ag+496+480+480+480+0%0AR+496+288+464+288+0+0+40+5+0+0+0.5%0Ac+832+384+832+448+2+0.00009999999999999999+0.0981381883619091%0Ac+688+288+688+480+2+0.000001+0.1841432078748464%0A159+688+480+496+480+1+20+10000000000%0Aw+592+464+592+432+0%0Aw+592+304+592+432+0%0A159+496+288+688+288+0+20+10000000000%0Aw+432+208+432+432+0%0Aw+432+432+592+432+0%0Ag+944+112+944+128+0%0Aw+432+208+592+208+0%0Ag+128+320+128+336+0%0Ag+832+448+832+480+0%0A160+560+160+624+160+0+20+10000000000%0Aw+624+144+624+64+0%0Aw+624+64+752+64+0%0Aw+624+176+624+256+0%0Aw+624+256+752+256+0%0Ag+944+256+960+256+0%0Aw+592+208+592+144+0%0A160+464+160+400+160+0+20+10000000000%0Aw+432+208+432+176+0%0Aw+400+176+400+256+0%0Aw+400+256+320+256+0%0Aw+400+144+400+64+0%0Aw+400+64+320+64+0%0A160+832+384+768+384+0+20+10000000000%0Aw+592+432+800+432+0%0Aw+800+432+800+400+0%0Aw+768+400+768+480+0%0Aw+768+480+688+480+0%0Aw+768+368+768+288+0%0Aw+768+288+688+288+0%0Ax+125+91+141+94+0+24+A%0Ax+903+91+919+94+0+24+A%0Ax+493+315+509+318+0+24+A%0Ax+849+387+865+390+0+24+B%0Ax+495+141+511+144+0+24+B%0Ax+110+243+127+246+0+24+C%0Ax+492+470+509+473+0+24+C%0Ax+898+244+915+247+0+24+C%0A 4 comments electronics
- Powering a large number of LEDs, making sure I'm understanding everything correctly. http://www.falstad.com/circuit/circuitjs.html?cct=$+5+0.000005+10.200277308269968+50+5+37%0Ac+384+144+448+144+0+0.000009999999999999999+0.0010648369585926076%0Aw+496+144+496+192+0%0Aw+496+144+480+144+0%0Ar+496+192+496+368+0+3%0Aw+496+368+496+400+0%0Aw+496+400+432+400+0%0Aw+432+208+352+208+0%0A162+432+224+368+224+1+2.1024259+1+0+0%0A162+432+256+368+256+1+2.1024259+1+0+0%0A162+432+288+368+288+1+1.6+1+0+0%0A162+432+320+368+320+1+1.6+1+0+0%0A162+432+352+368+352+1+1.6+1+0+0%0Aw+432+400+432+384+0%0Aw+432+384+432+352+0%0Aw+432+352+432+320+0%0Aw+432+320+432+288+0%0Aw+432+288+432+256+0%0Aw+432+256+432+240+0%0Aw+432+240+432+224+0%0Aw+432+224+432+208+0%0Aw+352+208+352+224+0%0Aw+352+224+352+256+0%0Aw+352+256+352+288+0%0Aw+352+288+352+320+0%0Aw+352+320+352+352+0%0Aw+352+352+352+384+0%0Aw+352+208+272+208+0%0A162+352+224+288+224+1+1.6+1+0+0%0A162+352+256+288+256+1+1.6+1+0+0%0A162+352+288+288+288+1+1.6+1+0+0%0A162+352+320+288+320+1+1.6+1+0+0%0A162+352+352+288+352+1+1.6+1+0+0%0A162+352+384+288+384+1+1.6+1+0+0%0A162+432+384+368+384+1+1.6+1+0+0%0A162+272+384+208+384+1+1.6+1+0+0%0A162+272+352+208+352+1+1.6+1+0+0%0A162+272+320+208+320+1+1.6+1+0+0%0A162+272+288+208+288+1+1.6+1+0+0%0A162+272+256+208+256+1+1.6+1+0+0%0A162+272+224+208+224+1+1.6+1+0+0%0Aw+272+208+192+208+0%0Aw+272+352+272+384+0%0Aw+272+320+272+352+0%0Aw+272+288+272+320+0%0Aw+272+256+272+288+0%0Aw+272+224+272+256+0%0Aw+272+208+272+224+0%0A162+192+384+128+384+1+1.6+1+0+0%0A162+192+352+128+352+1+1.6+1+0+0%0A162+192+320+128+320+1+1.6+1+0+0%0A162+192+288+128+288+1+1.6+1+0+0%0A162+192+256+128+256+1+1.6+1+0+0%0A162+192+224+128+224+1+1.6+1+0+0%0Aw+192+352+192+384+0%0Aw+192+320+192+352+0%0Aw+192+256+192+288+0%0Aw+192+224+192+256+0%0Aw+192+208+192+224+0%0Aw+368+224+368+256+0%0Aw+368+256+368+288+0%0Aw+368+288+368+320+0%0Aw+368+320+368+352+0%0Aw+368+352+368+384+0%0Aw+368+384+368+400+0%0Aw+288+224+288+256+0%0Aw+288+256+288+288+0%0Aw+288+288+288+320+0%0Aw+288+320+288+352+0%0Aw+288+352+288+384+0%0Aw+288+384+288+400+0%0Aw+208+224+208+256+0%0Aw+208+256+208+288+0%0Aw+208+288+208+320+0%0Aw+208+320+208+352+0%0Aw+208+352+208+384+0%0Aw+208+384+208+400+0%0Aw+128+224+128+256+0%0Aw+128+256+128+288+0%0Aw+128+288+128+320+0%0Aw+128+320+128+352+0%0Aw+128+352+128+384+0%0Aw+128+384+128+400+0%0Aw+368+400+288+400+0%0Aw+288+400+208+400+0%0Aw+208+400+128+400+0%0Aw+192+288+192+320+0%0Aw+128+400+112+400+0%0Aw+112+400+112+144+0%0Aw+112+144+192+144+0%0Af+464+80+464+144+0+50%0AR+352+144+352+112+0+0+40+4.5+0+0+0.5%0Aw+352+144+384+144+0%0Ag+192+144+192+112+0%0A 16 comments arduino
- Bench Supply Design http://falstad.com/circuit/#%24+4+4.9999999999999996E-6+10.20027730826997+50+12.0+43%0AR+544+144+544+96+0+0+40.0+12.0+0.0+0.0+0.5%0Ar+544+144+544+192+0+2.0%0Af+496+304+544+304+0+1.5%0Af+496+416+544+416+0+1.5%0Ar+544+592+544+640+0+330.0%0Ag+544+640+544+672+0%0Aa+400+304+496+304+1+12.0+0.0+1000000.0%0A174+320+368+336+432+0+10000.0+0.2921+Voltage%0Ag+320+432+320+464+0%0AR+320+368+320+336+0+0+40.0+12.0+0.0+0.0+0.5%0A174+208+288+224+352+0+10000.0+0.1337+Current%0Ar+208+352+208+416+0+330000.0%0Ag+208+416+208+448+0%0AR+208+288+208+256+0+0+40.0+12.0+0.0+0.0+0.5%0Aa+400+416+496+416+1+12.0+0.0+1000000.0%0Ar+544+192+400+192+0+1000.0%0Ag+256+384+256+416+0%0Ar+544+512+400+512+0+1000.0%0Ar+400+512+352+512+0+1000.0%0Ac+352+512+352+560+0+1.0000000000000001E-7+7.767458390452166%0Ag+352+560+352+592+0%0Ac+352+432+352+464+0+1.0000000000000001E-7+8.494800000000112%0Aa+672+320+768+320+1+12.0+0.0+1000000.0%0Aw+496+304+496+336+0%0Aw+496+336+672+336+0%0Aw+672+304+672+240+0%0AR+672+240+672+192+0+0+40.0+12.0+0.0+0.0+0.5%0A162+768+320+768+368+1+2.1024259+1.0+0.0+0.0%0Ar+768+368+768+400+0+470.0%0Ag+768+400+768+432+0%0Ag+768+528+768+560+0%0Ar+768+496+768+528+0+470.0%0A162+768+448+768+496+1+2.1024259+1.0+0.0+0.0%0Aa+672+448+768+448+1+12.0+0.0+1000000.0%0Aw+496+416+496+464+0%0Aw+496+464+672+464+0%0Ar+256+320+256+352+0+1000.0%0Ac+256+352+256+384+0+1.0000000000000001E-7+11.952811764705787%0Aw+224+320+256+320+0%0Aw+336+400+352+400+0%0Ar+352+400+352+432+0+1000.0%0Ag+352+464+352+480+0%0Aw+400+432+400+512+0%0Aw+544+432+544+512+0%0Aw+544+288+544+192+0%0Aw+400+192+400+288+0%0Aw+400+192+368+192+0%0Ar+368+192+368+224+0+1000.0%0Ac+368+224+368+256+0+1.0000000000000001E-7+11.952924494603195%0Ag+368+256+368+272+0%0Ax+788+349+876+352+0+12+Current+Limiting%0Ax+793+477+881+480+0+12+Voltage+Limiting%0Ax+106+323+184+326+0+12+Current+Select%0Ax+333+382+411+385+0+12+Voltage+Select%0Aw+672+432+672+304+0%0Aw+544+400+544+320+0%0Ax+582+622+650+625+0+12+dummy+load%0Aw+544+512+544+592+0%0Ar+400+320+256+320+0+1000.0%0Ar+352+400+400+400+0+1000.0%0Ag+608+512+608+560+0%0Ad+608+512+544+512+1+0.805904783%0AR+736+144+736+96+0+0+40.0+12.0+0.0+0.0+0.5%0Ac+736+144+736+192+0+9.999999999999999E-5+12.0%0Ag+736+192+736+240+0%0Ag+800+192+800+240+0%0Ac+800+144+800+192+0+1.0000000000000001E-7+12.0%0AR+800+144+800+96+0+0+40.0+12.0+0.0+0.0+0.5%0AR+864+144+864+96+0+0+40.0+12.0+0.0+0.0+0.5%0Ag+864+192+864+240+0%0Ad+864+192+864+144+1+0.805904783%0Ao+4+64+0+35+10.0+0.05+0+-1%0A 5 comments electronics
- Bug zapper brainstorm. I'm not a newb, OP will deliver. http://www.falstad.com/circuit/#%24+1+0.001+2.803162489452614+50+120.0+50%0Av+416+272+416+384+0+1+60.0+120.0+0.0+0.0+0.5%0Ac+592+272+688+272+0+4.7000000000000005E-7+-120.27846731476528%0Ac+592+384+688+384+0+4.7000000000000005E-7+-233.36531870644595%0Ac+688+272+784+272+0+4.7000000000000005E-7+-237.2973075567167%0Ac+688+384+784+384+0+4.7000000000000005E-7+-232.43176607090768%0Ac+784+272+880+272+0+4.7000000000000005E-7+-235.00431674508556%0Ac+784+384+880+384+0+4.7000000000000005E-7+-232.47437719405292%0Ac+880+272+976+272+0+4.7000000000000005E-7+-234.38882056091018%0Ac+880+384+976+384+0+4.7000000000000005E-7+-233.14048328903573%0Ac+976+272+1072+272+0+4.7000000000000005E-7+-233.539835519112%0Ac+976+384+1072+384+0+4.7000000000000005E-7+-233.39695860013285%0Ad+592+384+688+272+1+0.805904783%0Ad+688+272+688+384+1+0.805904783%0Ad+688+384+784+272+1+0.805904783%0Ad+784+272+784+384+1+0.805904783%0Ad+784+384+880+272+1+0.805904783%0Ad+880+272+880+384+1+0.805904783%0Ad+880+384+976+272+1+0.805904783%0Ad+976+272+976+384+1+0.805904783%0Ad+976+384+1072+272+1+0.805904783%0Ad+1072+272+1072+384+1+0.805904783%0As+1120+464+1120+384+0+1+true%0Aw+416+384+592+384+0%0Ar+592+432+688+432+0+1.0E7%0Ar+688+432+784+432+0+1.0E7%0Ar+784+432+880+432+0+1.0E7%0Ar+976+432+880+432+0+1.0E7%0Ar+976+432+1072+432+0+1.0E7%0Ar+1072+384+1120+384+0+10000.0%0Aw+496+272+592+272+0%0Ag+416+384+416+448+0%0Ag+1120+464+1120+496+0%0As+416+272+496+272+0+0+false%0Aw+1072+384+1072+400+0%0Aw+1072+400+1072+432+0%0Aw+592+384+592+432+0%0Aw+688+432+688+384+0%0Aw+784+432+784+384+0%0Aw+880+432+880+384+0%0Aw+976+432+976+384+0%0Ar+592+272+592+384+0+1.0E7%0Ax+1157+428+1273+434+0+24+Zap+switch%0Ax+422+230+489+236+0+24+On%2Foff%0Ao+33+64+0+35+1280.0+9.765625E-5+0+-1%0Ao+28+64+1+35+7.62939453125E-5+9.765625E-5+1+-1%0A 16 comments electronics
- Help with a delay circuit? http://www.falstad.com/circuit/#%24+1+9.999999999999999E-6+54.00526672067058+3+5.0+50%0A165+608+256+720+256+0+0.0%0Aw+608+288+608+384+0%0Aw+608+288+576+288+0%0Aw+608+352+528+352+0%0Aw+576+288+576+384+0%0Ac+576+384+576+432+0+9.999999999999999E-6+0.0013694878115584792%0Ag+576+432+576+448+0%0Ar+576+288+576+224+0+36500.0%0Aw+576+224+672+224+0%0AR+384+224+304+224+0+0+40.0+5.0+0.0+0.0+0.5%0AO+736+320+800+320+0%0Ar+528+224+528+352+0+1000.0%0Aw+528+224+576+224+0%0Ac+528+352+480+352+0+9.999999999999999E-6+2.220446049250313E-12%0A151+384+352+480+352+0+2+5.0%0AL+384+368+320+368+0+0+true+5.0+0.0%0Aw+384+224+528+224+0%0Aw+384+224+384+336+0%0Ao+15+64+0+35+7.62939453125E-5+9.765625E-5+0+-1%0Ao+10+64+0+34+7.62939453125E-5+9.765625E-5+0+-1%0Ah+2+7+5%0A 16 comments electronics
- Really cool and really helpful Physics and Math simulations you can play with. (wave propagation, harmonics, magnetic field, quantum mechanics, oscillations etc.) http://www.falstad.com/ 3 comments science
- I found this Java based, free, platform independent analog/digital sim... http://www.falstad.com/circuit/ 7 comments electronics
- Understanding Relaxation Oscillators http://www.falstad.com/circuit/e-relaxosc.html 8 comments electronics
- Nice applets for mathematics and physics demos http://www.falstad.com/mathphysics.html 9 comments programming
- Ripple Tank Simulation http://www.falstad.com/ripple/ 2 comments reddit.com