cheap linuxcnc on the raspberry pi? October 08, 2014 09:28PM |
Registered: 13 years ago Posts: 106 |
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 12:48AM |
Registered: 9 years ago Posts: 269 |
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 01:12AM |
Registered: 9 years ago Posts: 269 |
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Mung Via Indiegoo
I do not want to start a business and this project is only here to fund the cost of my expenses
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 06:02AM |
Registered: 13 years ago Posts: 7,616 |
Generation 7 Electronics | Teacup Firmware | RepRap DIY |
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 09:36AM |
Registered: 10 years ago Posts: 869 |
It doesn't just SOUND like it, it IS like that.Quote
Traumflug
Seriously, this sounds much more like a christmas wishlist than actual requirement.
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 12:11PM |
Registered: 13 years ago Posts: 1,611 |
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 03:04PM |
Registered: 11 years ago Posts: 203 |
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Do not worry if this fails, I will try another funding format only trying to raise about $25,000 to cover expenses, I also doubt that will succeed but I will try it anyway. I am not really that bothered what happens as I have many other projects I am working on. This project is partly selfish as I like Linuxcnc and want to see it developed further and hope that by encouraging others to use it will help improve the system and lower costs for everyone.
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 05:56PM |
Registered: 13 years ago Posts: 106 |
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pushthatbolder
$1,600,000 GOAL!!!
Seems high
you stated Total cost £16800 in the description.
you prices seem inflated. you could get all that for $3000 tops.
never use the words 'Drop Ship'
dont use words like 'Chinese' or 'China' or 'Cheap'
find another supplier if you only get price breaks after 10'000 pieces,
most are happy with orders of 100 to get discount prices they cost about $5 each if you buy 100 units,
if it 10'000 units, you may as well start a factory.
30 suppliers, wow, alot can go wrong with a large spectrum supply chain.
dont say you are going to have to buy a laptop, or things you should already have.
you should already have most of that, to warrant auctually offering the product.
the video was boring, enough that i did not watch after 10 seconds.
after 10 seconds, i know if i want to finish.
what you offer as the perk only cost between $50 and you are trying to get $160
I could sell you this kit for $50 no problem.
you have defeated yourself in your description.
good luck in the future mate.
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 06:14PM |
Registered: 13 years ago Posts: 106 |
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pushthatbolder
you state the following
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Mung Via Indiegoo
I do not want to start a business and this project is only here to fund the cost of my expenses
Lower you expenses, and ask for a realistic amount. and make a better video.
List of items required for development and testing of drivers:
high quality storage oscilloscope x2 £4000 (you should only need to pay £200 each =£400 [www.ebay.co.uk])
1080p camera £500 (why? you dont have a smartphone? how do you justify it? =£0)
quality microphone and sound card mixer £300 (what for? =£0)
8 cheap Chinese lathe/mill for cnc conversion £1600 (you are probably right on price, but why do you need? you should get spindles =$1600)
general metalwork and hardware parts etc £1000 (you are wayyy off, this project should budget £500)
16 raspberry pi (A,A+,B,B+) £500 (£250 from aliexpress for 16 units)
New monitors £2000 (second hand shops, electronics stores £200 each for good quality)
16 more parts kits, £1600 (how is this justified?)
other electronic parts general slush fund (resistors, capacitors, breadboards, pcb, etc.....) £1000 (how is this justified? should be about £300 and order what you might need all at on time)
Laser printer for pcb design £150 (this price would get you up to 10 printed board from most sources)
new laptop £1000 (how is this justified? you should already have an operational computer)
signal/function generator (may need two) £2000 ( £ 75 for functional)
High quality multi output power supply £500 (£125 [www.ebay.co.uk] )
Coffee £150 (you are totally justified, but should you be asking?)
Various small hand tools £500 (probably right, but what will you be buying?)
I will take $10 an hour for development time and handling the perks and dealing with suppliers. (you could justify this if you have a product to show, and you should incorparate this into your selling price)
this come up to £3600
you can get it cheaper from shopping better,
Ebay, Aliexpress, Electrical surplus stores etc, etc...
Best Regards
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 06:23PM |
Registered: 13 years ago Posts: 106 |
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Traumflug
I did controller development already and needed neither function generators nor multiple RaspPis. And Eight milling machines to develop one driver? A cheapo WolfStrap is entirely sufficient.
Seriously, this sounds much more like a christmas wishlist than actual requirement.
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 06:42PM |
Registered: 13 years ago Posts: 106 |
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cdru
It doesn't just SOUND like it, it IS like that.Quote
Traumflug
Seriously, this sounds much more like a christmas wishlist than actual requirement.
That being said, I'd like to announce my indiegogo project. I'm raising funds to develop a 32-bit ARM-based cold fusion extruder. Now I know what you're thinking...what experience does cdru have at developing a 32-bit ARM-based cold fusion extruder? Well, I have absolutely none. But I'm determined to get this done or take everyone's money trying. Once it's complete, people will have a extruder that is guaranteed to work as long as they don't actually try to use it. Now I can't ensure that even if I don't just run off with the money that a cold fusion extruder is even feasible, let alone a 32-bit one, as I haven't done any actual calculations, but I have spent the last 3 years thinking about extruders so that should be good enough.
I have made some wild ass guesses and illogical assumptions and all I need is $500k to reach my very realistic goal for production. Obviously I'll need a new house, and car, and a kick ass home theater. And food. Lots and lots of food. Delivery pizza is expensive and a key component of my development efforts. Plus since I want to do this full time I've already quit my job but I need to support my family so I decided I'll work for a low salary of $100k/year. This amount should fund me for at least a year. Maybe a year and a half before I'll have to come back and ask for more.
To help raise funds, I'll be selling $.02 resistors for $100 a piece. Now yes that does sound a lot, but I'll only need to sell 5000 kits instead of 10,000 which is a much more reasonable expectation. If people purchase more than one resistor, I'll give them the option of picking the value for an additional one time fee of $50 per resistor.
If anyone is interested, please send me your credit card number, or your paypal credentials, or just your bank account and routing number. I'll handle the rest for you and get back to you someday, maybe.
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 06:58PM |
Registered: 13 years ago Posts: 106 |
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droftarts
LinuxCNC on Raspberry Pi? Already done: [www.raspberrypi.org] or [code.google.com] or [wiki.linuxcnc.org]
And that's just three of the first four links, when I google: [lmgtfy.com]
Also, there's a better implementation on the BeagleBone Black ( [blog.machinekit.io] ), which actually has the capacity to run the stepper drivers in realtime through it's PRUs, unlike a Raspberry Pi.
Ian
RepRapPro tech support
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 07:23PM |
Registered: 13 years ago Posts: 106 |
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plexer
Quote
Do not worry if this fails, I will try another funding format only trying to raise about $25,000 to cover expenses, I also doubt that will succeed but I will try it anyway. I am not really that bothered what happens as I have many other projects I am working on. This project is partly selfish as I like Linuxcnc and want to see it developed further and hope that by encouraging others to use it will help improve the system and lower costs for everyone.
That bit I found particularly insulting.
Ben
Quote
insulting ɪnˈsʌltɪŋ/ adjective adjective: insulting disrespectful or scornfully abusive. "insulting remarks"
'insulting
ɪnˈsʌltɪŋ/
adjective
adjective: insulting
disrespectful or scornfully abusive.
"insulting remarks"'
Re: cheap linuxcnc on the raspberry pi? October 09, 2014 08:08PM |
Registered: 10 years ago Posts: 903 |
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cdru
If anyone is interested, please send me your credit card number, or your paypal credentials, or just your bank account and routing number. I'll handle the rest for you and get back to you someday, maybe.
Re: cheap linuxcnc on the raspberry pi? October 10, 2014 08:45AM |
Registered: 13 years ago Posts: 106 |
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vreihen
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cdru
If anyone is interested, please send me your credit card number, or your paypal credentials, or just your bank account and routing number. I'll handle the rest for you and get back to you someday, maybe.
Will you take cash through the mail?
In all seriousness, your parody covers every base for why I don't even read Kickstarter and those other begging for money sites.....
Re: cheap linuxcnc on the raspberry pi? October 10, 2014 11:30AM |
Registered: 10 years ago Posts: 869 |
Sure. Simply, you're nuts.Quote
mung
Do you have anything constructive to reply?
Re: cheap linuxcnc on the raspberry pi? October 10, 2014 11:51AM |
Registered: 10 years ago Posts: 553 |
Re: cheap linuxcnc on the raspberry pi? October 13, 2014 04:58PM |
Registered: 13 years ago Posts: 106 |
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cdru
Sure. Simply, you're nuts.Quote
mung
Do you have anything constructive to reply?
Being a little more detailed... Your campaign is completely unrealistic, overly pessimistic, and absolutely unsubstantiated with your capabilities.
I found every item on your shopping list except the USB cable which there wasn't enough specificity to determine what type and how long it was. In most cases, I'm reasonably confident it's the same item due to particular spelling and punctuation. For example for the mini pro your listing shows it as "Arduino pro min atmega328p board(with free Pin Header)" with mini missing the last i and no spaces after board and before the opening parenthesis. You asking to manage $1.6m dollars but you can't do basic proofreading or even not copy/pasting what some ebay ad wrote.
You can see a spreadsheet here. Total cost: 123.94 shipped to my door. That's with ordering a quantity of ONE for each line item. That doesn't factor in quantity discount and economy of scale savings if you ordered 10,000 kits. So with your estimate that you'll be "making" $3 on each kit sold, that leaves $33.06 in completely unnecessary overhead as all the items could be dropped shipped straight to the supporter, not to mention none of your individual components appear to be particularly premium quality items. It would be far easier for you, quicker for every would-be supporter, and better all around if people just spent the $126.94 to get the stuff directly and sent you the $33.06 as a donation. It would take less than 1/10 the number supporters to go that route and reach your goal and save you a ton of time and money handling 10k motors and all the other items. I also question if you could even handle the logistics of repackaging 10k kits in a reasonable period of time.
Imagine if you were going to a bank to ask for a car loan or home mortgage. Would you say things like "I think there is little possibility I could make the payments"? No. So why would you say things like "I think there is little possibility I can find enough people to fund [me]"? If YOU already realize the extremely unrealistic goals of selling 10k kits, and you set the project up so that you MUST reach that goal, then it's all but guaranteed that it is going to fail and it's a waste of everyone's time. Adding in "the more I have looked at this project the less I feel like it will work" and "Then there have been some problems with communication with Chinese suppliers" just reinforces the negativity and pessimism. If you're asking people to give you $1.6m dollars, you better ooze excitement and positivity that it can be done (even if in your head you don't think so). Your "If this project does not get funded" and "Finally" sections are a complete turnoff of any interest someone might have.
Finally, no where do you indicate any of your qualifications to know how to develop what you're developing. You don't state your education, your skills, your experience. I've seen previous posts (for example) where you said "I really don't know anything about electronical machines" and you didn't know what input, tolerant, and ttl meant. Now granted that was a year ago and you could be a really fast learner, but those aren't comments about someone who is already very skilled in doing what you are proposing to do. Those are comments from someone who has maybe a very limited working knowledge of digital circuitry and who can probably put together a circuit, but designing a completely new circuit to run in real time on a device that...really wasn't meant to run realtime...no.
Not to chit on your parade, but I have a feeling that the number of supporters isn't going to increase much over what it's at now. More power to you if you can, I just don't think you will.
Re: cheap linuxcnc on the raspberry pi? October 13, 2014 05:17PM |
Registered: 13 years ago Posts: 106 |
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gmh39
You want 1.6 million? Holy shit!!
I didn't read the campaign, but have you done any development thus far apart from think about it?
Typically a successful campaign asks only for the money to cover production. IE. They have used thir own funds to get to the production phase and have a final prototype that is working and ready to go.
From what I can tell just from reading this thread you don't have anything other than an idea, which is great, but you should not be asking for every single dime of the development funds. Sadly that is what a lot of people do with crowdfunding. Putting your own funds into the project shows commitment and dedication.
Just my 0.02 cents. I've never done any major electrical development but I'd imagine it can be done for waayyyyy cheaper.
Re: cheap linuxcnc on the raspberry pi? October 14, 2014 05:46AM |
Admin Registered: 11 years ago Posts: 1,063 |
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mung
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gmh39
You want 1.6 million? Holy shit!!
I didn't read the campaign, but have you done any development thus far apart from think about it?
Typically a successful campaign asks only for the money to cover production. IE. They have used thir own funds to get to the production phase and have a final prototype that is working and ready to go.
From what I can tell just from reading this thread you don't have anything other than an idea, which is great, but you should not be asking for every single dime of the development funds. Sadly that is what a lot of people do with crowdfunding. Putting your own funds into the project shows commitment and dedication.
Just my 0.02 cents. I've never done any major electrical development but I'd imagine it can be done for waayyyyy cheaper.
I think when luke skywalker said 'i don't believe it' yoda said 'and that is why you fail', I really don't believe there are 10,000 people that want 5 stepper motors that run from a raspberry pi.
The campaign is to fund development and testing of the gpio input drivers. The output drivers are already working though not fully and exhaustively tested I feel fairly certain they work correctly.
Linuxcnc will run stepper motors direct from the gpio pins at 10kHz step speed and funders of the project will recieve all hardware required to make a working set of motors if the goal is reached. The hardware package along with some videos I will make are what I feel to be an educational/hobbiest package that will show how to solder everything up and configure the system to run.
Re: cheap linuxcnc on the raspberry pi? October 15, 2014 11:11AM |
Registered: 10 years ago Posts: 869 |
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mung
I feel it was always a hard thing to fund as no one would give $3 for development without expecting a working driver with their hardware, then I would receive bad feelings from the hundreds of people expecting support on how to get things working with their rare and idiosyncratic hardware that they want to interface and cannot get working. The other way trying to give everyone the same hardware that is guaranteed to work requires a very large amount of negotiation and logistics and possible tax implications that make it hard for an individual such as myself to get certainty of actually not losing money.
Re: cheap linuxcnc on the raspberry pi? October 15, 2014 11:57AM |
Registered: 13 years ago Posts: 106 |
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thejollygrimreaper
is 10khz the maximum?, we have arduino based firmware now pushing a few times faster than that now, and arm based firmware hitting rates 10 times that and more,
Re: cheap linuxcnc on the raspberry pi? October 15, 2014 12:26PM |
Registered: 13 years ago Posts: 106 |
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cdru
I had a much longer post, but you were right and that bickering about things isn't productive to the end goal. And yes, I am an asshole, but everyone needs one whether they want it or not, otherwise they're just full of crap.
No one can give $3 because it's either $160 or nothing. If someone won't give $3 to help support it, they aren't not going to give $3 along with another $157 for stuff that they can already get cheaper and better. If you had a $5 or $10 that came with a "I'll post your name as a thank you", then I think you'd at least get something. But asking for an unrealistic goal to be met and you get nothing if it doesn't just ends up being a waste of everyone's time in the end.
Plus, irregardless of all the issues with the fulfillment of the kits and pricing, you've still not indicated any skills that you have why you are able to accomplish your intended goal. If you want people to help support you and invest in you, then you need to make them believe you can be successful. If Traumflug was seeking funding, we could look at his work developing Generation 7 electronics. Or nophead we could look at him developing the Mendel90 design. But we know nothing about you and your skills and you're blindly asking for people to fund something we have no indications that you can even do. So why do you think you can do it?
Re: cheap linuxcnc on the raspberry pi? October 18, 2014 06:50AM |
Registered: 13 years ago Posts: 106 |
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cdru
I had a much longer post, but you were right and that bickering about things isn't productive to the end goal. And yes, I am an asshole, but everyone needs one whether they want it or not, otherwise they're just full of crap.