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16  Using Arduino / General Electronics / Re: PCB Manufacture on: September 26, 2014, 05:39:41 am
Some CAD programs are easier to use than others but NONE of them are easy, be prepared for a lot of pain smiley

Packages like KiCad, Eagle, Designspark et al are all pretty popular.

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Rob
17  Using Arduino / Microcontrollers / Re: LPC810 mini ARM Prozessor in 8 pin dip package on: September 24, 2014, 05:11:54 pm
I gather lpc21isp is software, what actually does the programming? Or is it just for dev boards that already have programming hardware in place?

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Rob
18  Using Arduino / Programming Questions / Re: Using #if - #endif on: September 23, 2014, 09:57:51 pm
AFAIK you can use that as many times as you like.

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Rob
19  Using Arduino / Microcontrollers / Re: LPC810 mini ARM Prozessor in 8 pin dip package on: September 23, 2014, 09:25:04 am
I got the PSoC dev system on DVD a while back but just have too much to learn as it is so it's still in the drawer. Nice stuff though.

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Rob
20  Using Arduino / Networking, Protocols, and Devices / Re: NonI2c method for communication between 1 master Arduino and 2 slaves on: September 23, 2014, 06:53:29 am
You can use two I2C buffer chips with enable inputs (say the PCA9517) as a "MUX", that way the switching overhead is a simple write to a digital output.

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Rob
21  Using Arduino / Microcontrollers / Re: LPC810 mini ARM Prozessor in 8 pin dip package on: September 23, 2014, 12:05:32 am
Meanwhile back at the IDE, I installed the latest version (7.3.0) and have spent half the day getting my previous projects to compile.

Did I mention that I hate dicking with tool chains? smiley

Anyway all seems to work now.

I have installed EGit and tried to grab the repo but it asked me too many damn questions and by that time I'd had a gut full.

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Rob
22  Using Arduino / Microcontrollers / Re: LPC810 mini ARM Prozessor in 8 pin dip package on: September 22, 2014, 05:26:19 am
I use the LPC Xpresso IDE, I gather that's based on Eclipse so maybe EGit will work with it.

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Rob
23  Community / Bar Sport / Re: Scotland Reveals Currency Plan on: September 20, 2014, 08:08:33 am
Thanks for the support guys, I have been getting help, it's marvellous what they can do these days.

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Rob
24  Products / Arduino Due / Re: Assembler translation from UNO to DUE on: September 20, 2014, 07:16:33 am
I can't tell you what to do, but I can almost garrantee it won't involve assembler. You can access all the registers using C, you just have to study the data sheet and figure out the register names and the method they are addressed.

Hopefully someone here is up to speed on the SAM registers. Maybe study the existing SPI code, that should give you a pretty good lead.

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Rob
25  Community / Bar Sport / Re: Scotland Reveals Currency Plan on: September 20, 2014, 07:13:30 am
Sorry, I know I won't be popular for saying so but I feel I should stand up and be counted; I like bagpipes. smiley Went to a Scottish-style school and heard them every day for years.

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Rob
26  Community / Gigs and Collaborations / Re: Help develop a new stackable development system on: September 19, 2014, 11:00:36 pm
Photos as promised.


Top of board showing the Arduino shield header holes (mirror imaged because the shield goes on the other side) and the holes for the Quub backplane connectior (the 2x17 rows at the bottom). This can have standard stackable type socket strips or right angle headers to connect to a solid backplane or a standard 34-way ribbon cable.

Also, near the backplane connector can be seen a 1x5 header, this is designed to connect directly to most (probably all) 4D Systems LCD/OLED displays so it's easy to add a touch panel to a project.


Back of board showing the temp sensor chip and the 512kB SRAM. Also the Arduino header holes as this is the side that Arduino shields plug into.


The front panel, USB socket, 2x user buttons and LEDs, access to the internal program and reset push buttons and a 7-segment display for diagnostics or my favourite idle task, show a lost ant display.

Also there are indicators that show if the CPU is connected to the Quub backlane or the Arduino shield with the I2C and SPI buses.

So this is supposed to be compatible with an Arduino Mega but with only the same shield connections as a Duemilanova/Uno etc. The other pins on the Mega2560 CPU are used for Quub stuff like the backplane, LED display etc. As there aren't many Mega shields around I don't see this as an issue, and in return you can address up to 15 Quub shields as well as any normal combination of Arduino shields

Of course we don't have any Quub shields yet, but that's another story.

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Rob
27  Using Arduino / Project Guidance / Re: What circuitry would you recommend to run two DDS with one Arduino? on: September 19, 2014, 07:51:59 pm
SS (slave select), CS (chip select), CE (chip enable) etc are all pretty much aliases for the same thing. You do have to look at exactly how a chip uses the signal though as they are all different.

For example with the shift regs we often use here the signal doesn't actually "enable" anything, it simply latches data into internal flip flops. Therefore "latch" is a better term, but CS etc could be used as well.

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Rob
28  Community / Gigs and Collaborations / Re: Help develop a new stackable development system on: September 19, 2014, 07:12:02 pm
Update:

After a VERY long period (5 months) we finally have four loaded PCBs for the Mega2560 core CPU board. Frankly it took so long I forgot about it and even lost interest, but now seeing the real thing in front of me I'm getting keen again, it does look pretty good IMHO.

I'm still not ready to apply power to a board, but should be able to post some photos today.

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Rob
29  Products / Arduino Due / Re: DUE + I2C Resiliency? on: September 19, 2014, 06:01:57 pm
Quote
I can update on the progress.
Please do, it creates an entry for people to find in future should they be doing something similar.

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Rob
30  Products / Arduino Due / Re: DUE + I2C Resiliency? on: September 19, 2014, 08:53:06 am
What about using I2C driver chips (P82B96 et al), they have a lot more grunt which may help.

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Rob
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