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RegRap
Another question Kyle, why do you keep on getting new memberships to these forums, isn't one enough?

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RegRap
Another question Kyle, why do you keep on getting new memberships to these forums, isn't one enough?

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AmericanAnimal

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reg
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AmericanAnimal
[www.ebay.com]

Melzi boards go for $50 Reg. But you're right. Integrated curcuits are just a fad.

Let me explain something to you. Um, I am not "Mr. Lebowski". You're Mr. Lebowski. I'm the Dude. So that's what you call me. You know, that or, uh, His Dudeness, or uh, Duder, or El Duderino if you're not into the whole brevity thing. -- The Dude.


I don't know what you mean by all the junk at the bottom of the post Kyle, but anyway, here is a RAMPS system comparison with free postage also
[www.aliexpress.com]

Not to beat a dead horse, but the Alibaba link you posted doesn't include an LCD, though it shows one in their photos. Typical false advertising.

To their credit. I did find a much better deal on Melzi boards. $35 Alibaba
Nice try Reg.

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reg
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AmericanAnimal
[www.ebay.com]

Melzi boards go for $50 Reg. But you're right. Integrated curcuits are just a fad.

Let me explain something to you. Um, I am not "Mr. Lebowski". You're Mr. Lebowski. I'm the Dude. So that's what you call me. You know, that or, uh, His Dudeness, or uh, Duder, or El Duderino if you're not into the whole brevity thing. -- The Dude.


I don't know what you mean by all the junk at the bottom of the post Kyle, but anyway, here is a RAMPS system comparison with free postage also
[www.aliexpress.com]

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BackEMF
Then for those who like Melzi they buy Melzi. There is room for everyone. But Melzi has no nice option to feed Arduino projects, or charge cellphones.

I dont see an issue here to make a fuzz about, i'm merely giving people a choice extra. and my goal is to also make it a cheap one. Though that part i still have to figure out.

You clearly didn't give the quote much thought so i'll give up on that.

And i really don't get why people pay EBAY and PAYPAL fees, it's the biggest rippoff on the net. people want the cheapest stuff but then they are blind for the INSANE fee's that Paypal skims off.
But hey it's all about choice.

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AmericanAnimal
http://www.ebay.com/

Melzi boards go for $50 Reg. But you're right. Integrated curcuits are just a fad.

Let me explain something to you. Um, I am not "Mr. Lebowski". You're Mr. Lebowski. I'm the Dude. So that's what you call me. You know, that or, uh, His Dudeness, or uh, Duder, or El Duderino if you're not into the whole brevity thing. -- The Dude.

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AmericanAnimal

Untrue. Look at the Melzi board. Integrated steper drivers. Far superior to Ramps.

I have a dream. --MLK

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Build head and give it a try.

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AmericanAnimal
If your going to build a new board, why not integrate the PSU and the controller into 1? 1 board to rule them all!!!

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AmericanAnimal
If your going to build a new board, why not integrate the PSU and the controller into 1? 1 board to rule them all!!!

Albert Einstein was an idiot. --AmericaAnimal

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BackEMF
I have pulled the Diode D1 of fmy RAMPS Thats about the most difficult thing to do!
I made a few tiny mistakes but this first proto seems to be pretty much OK so far.

I'm planning to send a few people a proto for free. One to Reg, and MelT if you also like one then please let me know.

I'll have to see if i can ship this as a letter. Fully assembled or as DIY kit. it's easy to solder with basic skills. I'll look if there is a way to ship the parts trough an external sales channel. As bare PCB or as a DIY kit. But first I need to make sure all is working as expected when it is all wired up.



"Everything should be made as simple as possible, but not simpler." Albert Einstein

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BackEMF
Since I'm a bit recycling minded i'm planning to use ATX PSU for my next SmartRap upgrade.
The local recycle center often has cheap scrap PC's costing less then a new PSU. And then i also get the heatsinks HDD CR-ROM and all the other junk

So i'm looking at http://reprap.org/wiki/PCPowerSupply, http://reprap.org/wiki/RAMPS_1.4#Power_Supply and http://reprap.org/wiki/ATX_PSU_Dev_Board

I have a few idea's for a PCB that has all the essential connections and a bit more (extra fan, LED, and since it has 5V why not add a USB charger output). I'm familiar with ATX PSU's so technically i'll be able to make this happen.

Now i'd like to open up some space here to ask what others might want on a PCB that sits between ATX and RAMPS.

My idea's so far are:

• PCB smaller then 10x10 cm eventually even 10x5 cm to keep the cost to a minimum
• ATX12
• A header that connects to RAMPS
• Power button (to manually power on and off)
• mounting holes
• LEDs for Standby OK and eventually LED's for each voltage.

Main goal is to provide all the essential connectivity. And provide bare PCB's at a ultra low price. Si that everyone can choose their own components and what is not used does not have to be mounted.

This will result in a very cheap but flexible solution for ATX power.

I'm still looking if a pre-load resistor is still considered 'essential'.
Resettable fuses yes or no? RAMPS already has those...

What else would be desired, or could be a good idea to add to this board?

Option to mount an Volt and/or Ampere meter?

And does anyone have an idea how and where to mount this? This with the SmartRap in mind. Can we use the ATX mounting holes to make the PSU + the PCB one with the SmartRap and eventually use the airflow of the PSU to cool the stepprdrivers.

Yes... i really like to take everything into account... :-)

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BackEMF
The batch of proto PCB's arrived today. I hope i dind't make design errors. (always is hard to check your own work hehe)
Still waiting for the angled ATX connectors to arrive but there if progress.