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You can use a technique called "I2C big banging", check out this software https://github.com/felias-fogg/SoftI2CMaster. Good luck :)
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Yes you can!I've made an instructable that does exactly that - same principle as this instructable, just a bit more than a proof of concept. Search for ac light radio controlled if you wish to view a working implementation that I've kept going for a number of years.
Coke Machine Can Level Detector
Thanks for the credit, and awesome project!
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There are a lot of comments about the usage of an external power supply. This usually won't be needed! There are a number of reasons that can be the case in my situation, and I haven't tried alternatives later.SO IN MOST CASES, YOU WON'T NEED TO USE AN EXTERNAL POWER SUPPLY (PSU)!On the positive side, this shows for those whom are new to it, how to use "two" PSUs, with the common ground and so forth ;)
There are many people that power the display with the internal power supply / power supply from the arduino. This is NO PROBLEM in most cases; in my case it was a problem, possibly caused by a number of variables. Noting a couple of points that can be the cause:* Faulty arduino-clone* Faulty USB-port with regard to its power lines* Problems powering directly from the FTDI/USB-chip (I belive was CH340 on this one)* Missing pull-up resistorsSorry if this is not clear enough in the instructions, but you can power it fine with most arduinos, especially original hardware has spesifications that should power it just fine.On the other hand, with this setup, you can also quickly learn how to "bind" two power supplies in the same setup (commond ground).
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Incredible! As a former inspector using professional ROVs based on this concept, you guys have gotten a long way! I can see some challanges with possible climbing up on the side of the pipe, but with enought bottom weight and steering that should be managable.A lot of people actually does this kind of inspection for a living, inspecting pipelines and reporting errors. After many years of experience in the field, ruggedness is one of the keywords I would like to point out!And you actually were to implement this in some kind of production, I really, really recommend a cord for steering power and transmission of picture. Use a proper cable with shielding in it, so you won't rip apart the leads inside if so.Congrats on a great first instructable! Really interesting, and if you develop it furt…
Incredible! As a former inspector using professional ROVs based on this concept, you guys have gotten a long way! I can see some challanges with possible climbing up on the side of the pipe, but with enought bottom weight and steering that should be managable.A lot of people actually does this kind of inspection for a living, inspecting pipelines and reporting errors. After many years of experience in the field, ruggedness is one of the keywords I would like to point out!And you actually were to implement this in some kind of production, I really, really recommend a cord for steering power and transmission of picture. Use a proper cable with shielding in it, so you won't rip apart the leads inside if so.Congrats on a great first instructable! Really interesting, and if you develop it further, please give us a shout! :D https://www.rico-gmbh.de/10-1-Carriages.html <- This is one of the leading firms in the world creating these kinds of ROVs.Keep up the nice work, and thanks for sharing it =)
Death Star Trench Run Table
Thank you for the nice tip and adding value to the tutorial!
Thanks for the nice advices, it adds great value! And thanks for the nice comment :)
I'm so happy I could help, and thanks so much for the nice comments! :)
Awesome! Thanks so much for adding value to the tutorial! :)
Awesome instructable, thank you so much!Regarding links, on the few instructions I've written, I just link to search-pages of the product, or product type - since links often gets dead, especially ebay-links and other similar sites. Just a tip :) Thanks a again, gonna use this one as soon as I have the time!
I'm really not sure, but it might be related to the fact that I was using a nano clone (not genuine arduino), which might have a different voltage regulator, or maybe a partly broken one? I'm also considering if the lack of pull-up resistors on the i2c-line could be the reason, even thought when I changed PSU it worked fine.
A faulty wire could certainly explain it, as well as a bugged clone can - might be both. Anyway, not stating you need an external supply, but I indeed did with this setup. Have you measured the current draw on the display?
That might also be something to consider - when I changed power supply, I didn't power the display from USB anymore, which might explain the change in behaviour.
Thanks, glad it could help!
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