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| pcbgreycode [2019/01/22 21:21] – yair | pcbgreycode [2019/06/01 11:56] (current) – yair |
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| a turntable embedded on a PCB, a silkscreen on a round PCB to encode the position using [[http://en.wikipedia.org/wiki/Gray_code|gray code]]\\ | a turntable embedded on a PCB, a silkscreen on a round PCB to encode the position using [[#gray_code]] |
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| {{:video-1547726867.mp4}} {{youtube>em2OpwheHMU?medium}} | |
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| | {{:video-1547726867.mp4}} {{youtube>em2OpwheHMU?medium}} {{:20190208_151040.mp4|}} {{::turntablepcb-v4-zofzpcb.mp4|using www.zofzpcb.com on archLinux/wine}} |
| {{:v1.3.jpg?400}} {{:50533102_325584924718706_62649425226366976_n.jpg?400}} | {{:v1.3.jpg?400}} {{:50533102_325584924718706_62649425226366976_n.jpg?400}} |
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| === tools used === | |
| [[https://github.com/idiot-io/turntablePCB|github]] repository | [[https://github.com/idiot-io/turntablePCB|github]] repository |
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| | === tools used === |
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| [[https://inkscape.org|inkscape]]\\ | [[https://inkscape.org|inkscape]]\\ |
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| ===Layout=== | ===Layout=== |
| | [[https://www.pololu.com/docs/0J13/2|digital]] \\ |
| | {{:pasted:20190122-211551.png}} |
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| {{https://i.imgur.com/jlaOwRV.png|Honey bee counter II}} | [[https://www.pololu.com/docs/0J13/3|analog]] \\ |
| | {{:pasted:20190601-085501.png}} |
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| [[http://gunook.com/honigbienenzahler-ii|Honey bee counter II]] | |
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| | a few guides and approaches |
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| a few approaches on the hookup | *[[http://gunook.com/honigbienenzahler-ii|Honey bee counter II]] |
| *https://cdn.sparkfun.com/datasheets/Sensors/Infrared/SparkFun%20Line%20Follower%20Array_v10.pdf | *https://cdn.sparkfun.com/datasheets/Sensors/Infrared/SparkFun%20Line%20Follower%20Array_v10.pdf |
| *https://www.pololu.com/docs/0J13/2 | |
| * | |
| ===Gray code=== | ===Gray code=== |
| | [[http://en.wikipedia.org/wiki/Gray_code|wikipedia]]\\ |
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| {{youtube>IeWcvAsz88o?medium}} | <blockquote>{{youtube>IeWcvAsz88o?medium}} |
| | <cite>"to get a gray number only change one bit"</cite> |
| | </blockquote> |
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| | <blockquote>{{:pasted:20190122-192340.png}} |
| | <cite>http://datagenetics.com/blog/november32014/</cite> |
| | </blockquote> |
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| “to get a gray number only change one bit” | {{:greycode.png}} {{https://i.imgur.com/DbMB6Vvm.png}} |
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| {{:greycode.png|https://www.quora.com/What-is-the-difference-between-binary-numbers-and-Grays-code}} | |
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| ====other methods==== | ====other methods==== |
| | the following are for reference |
| ===LED as light Sensor=== | ===LED as light Sensor=== |
| no word regarding detection speed | no word regarding detection speed |
| *[[https://wiki.analog.com/university/courses/electronics/electronics-lab-led-sensor|analog.com]] | *[[https://wiki.analog.com/university/courses/electronics/electronics-lab-led-sensor|analog.com]] |
| *[[https://makezine.com/projects/make-36-boards/how-to-use-leds-to-detect-light/|makezine]] | *[[https://makezine.com/projects/make-36-boards/how-to-use-leds-to-detect-light/|makezine]] |
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| ===magnetic=== | ===magnetic=== |
| [[http://www.ichaus.de/upload/pdf/WP6en_Magnetic_vs_optical_17092012.pdf|Magnetic_vs_optical]] | [[http://www.ichaus.de/upload/pdf/WP6en_Magnetic_vs_optical_17092012.pdf|Magnetic_vs_optical]] |
| * [[http://www.4qdtec.com/stpen.html|stpen]] | * [[http://www.4qdtec.com/stpen.html|stpen]] |
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| ===misc pics=== | |
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| {{https://i.imgur.com/LRRg0W9.png}} | |
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| {{https://i.imgur.com/KrapStk.png}} | |
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| {{https://i.imgur.com/DbMB6Vvm.png}} >{{ :paul2016.pdf |pdf }} | |
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