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LED Weather Words Forecast
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Posting a note for the following updates: 1) In the software ... Lowered default LED brightness settings to yield a maximum current draw of less than 4 amps and added CAUTION comments to warn of changing brightness settings beyond project hardware capability. Added new function colorWipeRand for shuffled pixel effect when displaying 'yellow' error modes. Added new option to select temperature units english (degrees F) or metric (degrees C) in the apiboot.txt file. 2) In the Instructable ... Removed instruction to connect Pi Pin 6 (GND) and added instruction to blacklist the Broadcom audio kernel.
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Rock n' Roll BGlad ... I'm completely stoked that you were able to duplicate this project! I like the all black enclosure and it looks great hanging on the wall.I will update the instructions to include the hdmi_force fix ... it will need to be a permanent addition to the installation going forward.
That was a pleasantly surprising fix, all I needed was to add hdmi_force_edid_audio=1 in /boot/config.txt.
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Take a look at this thread and see if it helps ... https://github.com/jgarff/rpi_ws281x/issues/102
Ok, I'm going to answer your question with another question ;) Do you have the project set to launch at boot (did you edit crontab to launch weather_word.py)? I ask because you should be able to unteather the project from all peripherals, plug it in and it should run without interruption.
Thanks for all the help Aught. Yes, the crontab is set and working properly. So when the HDMI cable is not plugged in, and I plug it in, it will start the rainbow wheel but then literally just stop moving and stay in rainbow without moving. Once I power up with the HDMI connected to the TV, it boots up perfectly. Strange isn't it? Maybe it's a defective pi?
I'm soo close! Everything works except for when I try to hang it on the wall. The program freezes. It appears that it only works when I have the HDMI cable plugged in. I believe it's a grounding issue but haven't figured out a solution yet.
Now, I am having a failure to read the APIboot.txt I added my API key from Weather Underground and I de-commented one line for CA\\San_Francisco. Still no joy :(. But I am certainly closer to finishing it.
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No issues now with the strandtest in the rpi_ws281x, it worked perfectly. Both weather word and rpi_ws281x are in /home/li too.
/home/pi directory *
That was the problem! Thanks now it's in the right directory
OK dadida ... I made two batches of Ragu this weekend for a family get-together ... it was every bit as good as the first, which is a testament to your recipe. This time I've included a few pictures of the basic steps 1) with vegetables and meat browned, 2) just after adding the milk and 3) the final product ;) Thank you again!
Hello BGlad1... it is great that you have made it this far into the project! I'm working to better understand what might be failing. First, I've run the weather_word and strandtest code on Pi2B, Pi3, and Zero with no issues other than the 'random flickering' issue noted at the bottom of Step 6. Second, though I've not specifically used an RGBW in any of my projects, I believe that the neopixel library will treat the W bit as 0 unless specifically called.It is hard to tell from your picture, but do you have the the rpi_ws281x library installed and did the strandtest example work? Are the rip_ws281x and weather_word folders showing in the /home/pi/ directory?
Hello BGlad1... it is great that you have made it this far into the project! I'm working to better understand what might be failing.First, I've run the weather_word and strandtest code on Pi2B, Pi3, and Zero with no issues other than the 'random flickering' issue noted at the bottom of Step 6. Second, though I've not specifically used an RGBW in any of my projects, I believe that the neopixel library will treat the W bit as 0 unless specifically called.It is hard to tell from your picture, but do you have the the rpi_ws281x library installed and did the strandtest example work? Are the rip_ws281x and weather_word folders showing in the /home/pi/ directory?
Hey Aught,Awesome project, I've made it up to here. But I am having trouble getting weather_word started. I keep getting "attributeerror: 'module' object has no attribute 'WS2811_STRIP_RGB'" perhaps this is because I'm using pi3 instead of Zero or my strip is RGBW. I'm not sure but maybe you might know how I can trouble shoot here. Thanks!
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Hello dadida ... I made your Ragu for dinner tonight ... the flavor was fantastic and the family is claiming this recipe as their new favorite! I was a little skeptical about the step with the milk, but in the end it reduced perfectly just as you described. Thank you for sharing this recipe!
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I purchased this power supply and this wifi adapter.I don't think that you will be able to do this particular project for $50. The number of addressable LED's is a significant cost factor ... There are other methods of driving that quantity of LED's that will be less expensive ... you might check out the Sleek Word Clock instructable as an example. But the method to drive the LED's is different so the hardware setup and code would be quite different.I'm thinking that you might scale the project way down to a handful of LED's and let the colors of the LED's represent the variables (maybe an LED for temperature and another for Humidity, etc).Keep on thinking your project through Benjamin ... start sketching out what you want your project to look like and then start defining what it is you want the project to do. Then start working on the bill of materials and the code.
Thank you very much for this.What kind of Wifi Adapter do I need? There are too many to choose from nowadays I'm not sure what is required. I'm also not sure what Power Supply is needed. If you are able to find the Power Supply and Wifi Adapter on this website: http://www.jaycar.com.au/That would be much appreciated, if the Power Supply and Wifi Adapter are not on there just the name of what I need would be fine.Would I be able to follow the same instruction your provided in my project with these new parts? Or is the procedure different because I have different parts? Thank you very much.
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With the following list of materials, I'm coming up with a cost of $56.50 ... this doesn't include shipping fees and it doesn't include the cost of some base materials (wire, solder, resistor) and hardware for setup (wireless keyboard, powered usb hub). I think you can beat this cost with some creative shopping and parts substitution (individual LED's versus a strip or stick) ... other materials you might be able to borrow from a classroom or friend (breadboard, decent power supply, etc).Pi Zero Budget Pack ($25), 74AHCT125 Level Converter ($1.50), Wifi Adapter ($8), Breadboard ($5), Power Supply ($8), Barrel Jack ($2), Neopixel Stick ($6).
I was just told by my teacher that our budget is 50$. Is there any way to do this, or something similar or smaller and be able to fit the budget? Maybe doing it with LED's or something. I hope you can help me, as I really want to do something like this for our class project.
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I've got a website up and running to test the code over the next few weeks to see if I like the output (unfortunately I can't post a link here or I will go over my allowed API calls per day). I am mostly using Dark Sky Forecast for the data with a little bit of Weather Underground for special cases (like thunderstorms/flurries/blizzards).If it is currently precipitating, then I can display if it is "light" or "heavy" based on the variable "precipIntensity" and the rule of thumb that anything under 2mm/hr is light and over 10mm/hr is heavy.If it isn't precipitating, I can display if there is a "slight chance of" or a "chance of" precipitation based on the "precipProbablitiy" and the rule of thumb that anything over 0.5 is chance of and anything under is slight.I am hoping to deduce more situation using the definisitions found here:http://www.timeanddate.com/weather/glossary.htmlFor example, showers are defined as intermittent whereas rain is defined as for an extended duration. I could look at the probability and or intensity over the next few hours and if it is over a threshold for at least 3 hours, then it is rain instead of showers.Also, snow fall is referred to as flurries if there is no accumulation. Luckily, Dark Sky has a prediction on accumulation so I can check these and decide whether to call it snow or a flurry.The nice thing is I will always have info for the cloudiness regardless of what precipitation is occurring. This is something WU cannot do. If it tells you there are rain showers, you lose the ability to tell if the sky is partly/mostly cloudy.Similarly, with Dark Sky, if it is raining, you can also tell if it is foggy because of the "visibility" data. If less than 2km, it is classed as fog (though I may have to watch if the reduced visibility is due to heavy snow/rain). But the main point is that this is all possible.In the attached image, the various coloured words should be able to be mostly independent of each other so that the poster has the most words lit up to be as descriptive as possible.
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