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pcbgreycode [2019/01/17 15:38] – yair | pcbgreycode [2019/02/07 18:09] – yair | ||
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- | ===8 BIT turntable=== | + | a turntable embedded on a PCB, a silkscreen on a round PCB to encode the position using [[#gray_code]] |
- | + | ||
- | + | ||
- | a turntable embedded on a PCB | + | |
- | + | ||
- | [[https:// | + | |
{{: | {{: | ||
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{{: | {{: | ||
+ | [[https:// | ||
- | ====Layout==== | ||
- | {{https:// | + | === tools used === |
- | [[http://gunook.com/honigbienenzahler-ii|Honey bee counter II]] | + | [[https://inkscape.org|inkscape]]\\ |
+ | extensions | ||
+ | | ||
+ | | ||
- | ===Gray code=== | + | [[https:// |
+ | *[[https:// | ||
- | a silkscreen on the round PCB bottom to encode the position using [[http:// | + | ===Layout=== |
+ | {{:pasted:20190122-211551.png}} | ||
- | {{youtube> | ||
- | “to get a gray number only change one bit” | ||
- | {{https://d2mxuefqeaa7sj.cloudfront.net/s_C3F26DA1DE2735AB305F4004085FAFE353789C4AD8CC62A80295D78BF90BFD02_1531819410575_image.png|https://www.quora.com/What-is-the-difference-between-binary-numbers-and-Grays-code}} | + | a few guides and approches |
+ | *https://www.pololu.com/docs/ | ||
+ | *[[http:// | ||
+ | *https://cdn.sparkfun.com/datasheets/ | ||
- | {{https:// | ||
+ | ===Gray code=== | ||
+ | | ||
+ | < | ||
+ | < | ||
+ | </ | ||
+ | |||
+ | < | ||
+ | < | ||
+ | </ | ||
+ | |||
+ | {{: | ||
===components=== | ===components=== | ||
- | *QRE111 | + | *QRE1113 |
- | *{{https:// | + | {{https:// |
- | *{{https:// | + | {{https:// |
- | a few approaches on the hookup | ||
- | *https:// | ||
- | *https:// | ||
- | ===DC motor=== | + | ====other methods==== |
+ | the following are for reference | ||
+ | ===LED as light Sensor=== | ||
+ | no word regarding detection speed | ||
+ | *[[https:// | ||
+ | *[[https:// | ||
+ | ===magnetic=== | ||
+ | [[http:// | ||
+ | |||
+ | ===DC motor=== | ||
simply connecting a dc motor to the spinning disk\\ | simply connecting a dc motor to the spinning disk\\ | ||
by rotating the disk you convert the energy to analog input for MCU or whatever\\ | by rotating the disk you convert the energy to analog input for MCU or whatever\\ | ||
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- | ===misc pics=== | ||
- | {{https:// | ||