UL Certification

Started by Capoccetta in comp.arch.embedded10 years ago 6 replies

Hi, a customer of ours is asking UL certification of every electronic component used on a device that we have designed (and hopefully...

Hi, a customer of ours is asking UL certification of every electronic component used on a device that we have designed (and hopefully will produce) for them. They are not asking for an UL certification of the whole device, just of the PCB (and the manufacturer will provide to us the UL file number) and the components (microcontroller, memories, connectors, etc.); are these certifications avai...


ARM7 board- the latest PCB design--customer attention

Started by EZarm in comp.arch.embedded16 years ago 6 replies

with expandable idea http://arm.web7days.com http://arm.web7days.com/faq.html

with expandable idea http://arm.web7days.com http://arm.web7days.com/faq.html


SDRAM with YFBGA

Started by phateshawn in comp.arch.embedded12 years ago 2 replies

Hi all, I would like to solder a mobile SDRAM with YFBGA package to a PCB. I don't have a heating oven to solder it in a conventional way. Can...

Hi all, I would like to solder a mobile SDRAM with YFBGA package to a PCB. I don't have a heating oven to solder it in a conventional way. Can anybody suggest me an inexpensive way to achieve this? Thanks, -Phate


DC/DC 12/24v to 3.3 and 5v ?

Started by ElderUberGeek in comp.arch.embedded13 years ago 2 replies
PCB

I have a board that has components requiring both 5v and 3.3v supply. The unit is supposed to be powered from a 12v or 24v battery. Can anyone...

I have a board that has components requiring both 5v and 3.3v supply. The unit is supposed to be powered from a 12v or 24v battery. Can anyone suggest such a dual output DC/DC converter? Needs to be PCB mounted and of course inexpensive... (and should preferable handle polarity changes in source). Apart from the above, if BOM cost is to be minimized, would it be better to build it from dis...


BGA at home?

Started by CC in comp.arch.embedded12 years ago 3 replies
PCB

Hi, I know it is possible to solder small BGA chips using a toaster oven. Now, I would like to know if it is possible to solder a Blackfin to a...

Hi, I know it is possible to solder small BGA chips using a toaster oven. Now, I would like to know if it is possible to solder a Blackfin to a PCB at home? If not, does professional services can do it? Thanks


32 pin LQFP prototyping socket?

Started by ElderUberGeek in comp.arch.embedded13 years ago 8 replies
PCB

Anyone know of a source for 32 pin LQFP sockets that can be PCB mounted for prototyping? The only one I could find...

Anyone know of a source for 32 pin LQFP sockets that can be PCB mounted for prototyping? The only one I could find is: http://www.epboard.com/eproducts/protoadapter1.htm but it is darn expensive......


how can I burn bootloader into Flash?Thanks

Started by Lee in comp.arch.embedded15 years ago 6 replies

Dear all, If I did the PCB by myself and put all components onto the board by myself, how can I burn bootloader into Flash?JTAG hardware is...

Dear all, If I did the PCB by myself and put all components onto the board by myself, how can I burn bootloader into Flash?JTAG hardware is enough? Thanks,


Chipcon & other RF transcievers?

Started by Hw in comp.arch.embedded14 years ago 6 replies

Hi everyone. Has anyone here used Chipcon transciever parts? I'm thinking about using the CC2500 or maybe the CC110 for a project and...

Hi everyone. Has anyone here used Chipcon transciever parts? I'm thinking about using the CC2500 or maybe the CC110 for a project and wanted to find out the pro/cons for these devices. Also, is anyone aware of a part in this class (embedded RF, SPI or UART interface) that can do 1 Mbps? Finally, how good do the PCB screened antennas work for indoor use, near and around computers?...


Suggestions for Plastic Molding Case for Embedded Project

Started by Ben Nguyen in comp.arch.embedded16 years ago 3 replies
PCB

Im laying out a PCB and Im looking to have a simple plastic casing around it. This is just for my senior project, so Im not looking for high...

Im laying out a PCB and Im looking to have a simple plastic casing around it. This is just for my senior project, so Im not looking for high volume (cost) production. The case would just need to be the size of the card (~ 4" x 2") and some room for a few double aa batteries. Can anyone recommend a company?


Technica information on Gameboy Advance PCB and catridge connectors?

Started by Kelvin in comp.arch.embedded15 years ago 7 replies

Hi, there: I am studying ARM assembly programming and FPGA. I can program some simple programs with the LCD and buttons. I need some...

Hi, there: I am studying ARM assembly programming and FPGA. I can program some simple programs with the LCD and buttons. I need some technical information on how to interface with the FPGA through the catridge connector. Thanks for your leads. Kelvin


How to erase chip numbers from a chip?

Started by ElderUberGeek in comp.arch.embedded14 years ago 6 replies
PCB

What is the best way to remove the chip numbers/information from the top of the chips on a PCB? (so that no one knows what chip was used...).

What is the best way to remove the chip numbers/information from the top of the chips on a PCB? (so that no one knows what chip was used...).


Let's start from the beginning

Started by Tolga Onbay in comp.arch.embedded14 years ago 6 replies

Hi, I am studying in computer engineering and working on my graduation project which is about embedded systems and internet. Anyway, I want...

Hi, I am studying in computer engineering and working on my graduation project which is about embedded systems and internet. Anyway, I want to have more skill and knowledge on embedded system subject. Here is the problem. We don't get detailed information in electrics and electronics (just the basic). So I want to learn more(like electronics, PCB design, DSP ...). Could you give me some ...


What is the current smallest via on PCBs ?

Started by hamilton in comp.arch.embedded8 years ago 4 replies
PCB

I have noted that many PCB shops around the globe now offer minimum 15 mil drill size. What is the most reliable and smallest annular ring...

I have noted that many PCB shops around the globe now offer minimum 15 mil drill size. What is the most reliable and smallest annular ring for a via with a 15 mil hole ? Also, does anyone have a link for a LFBGA100 layout ? This is my first try on a BGA layout, any advice or suggestions would be welcome. Thanks don


Connecting wire to PCB

Started by James Morrison in comp.arch.embedded14 years ago 6 replies
PCB

Hello all, I'm sure many people out there have solved this problem so hopefully someone can point me in the right direction. I have two...

Hello all, I'm sure many people out there have solved this problem so hopefully someone can point me in the right direction. I have two wires I need to solder directly to a board I am designing. The wire is difficult to solder since its stainless steel. So to minimise assembly time and cost I'd like to crimp an end onto the wire that will then soldered in into a plated through-hole in t...


EU lead-free directive

Started by Peter in comp.arch.embedded14 years ago 82 replies
PCB

Hi, This comes in mid-2006 and AIUI requires that lead content is below 0.1%. Surely, one could achieve this by making the overall product...

Hi, This comes in mid-2006 and AIUI requires that lead content is below 0.1%. Surely, one could achieve this by making the overall product heavier? Or does it work on a per-circuit-board basis? In that case, the lead in standard solder will probably weigh more than 0.1% of the weight of the populated PCB.... This could be a serious problem for any company that is slowly running dow...


where to make 4 layer PCBs and populate them ?

Started by rziak in comp.arch.embedded14 years ago 5 replies

Can someone advise where to turn to get a PCB prototype made including populating the ICs (2-3x BGA1xx packages) from both sides, for reasonable...

Can someone advise where to turn to get a PCB prototype made including populating the ICs (2-3x BGA1xx packages) from both sides, for reasonable price (hobby project) ? I am thinking PCBexpress. They seem to offer prototyping via other local vendor. Anyone can advise to or not to use PCB123 software ? Is it possible to route signals through FPGA from any I/O to any I/O (i.e. like matrix ...


Mentor Graphics Demanding Money with Menaces

Started by Gary Pace in comp.arch.embedded12 years ago 19 replies
PCB

Howdy Y'all : Been using MGC (originally Innoveda) PCB tools for a few years - like 'em Came to renew our (expensive but good) maintenance...

Howdy Y'all : Been using MGC (originally Innoveda) PCB tools for a few years - like 'em Came to renew our (expensive but good) maintenance contract a few weeks ago We had some internal re-organization so our PO had a different name at the top MGC queried this, I sent them the standard blurb on the name change Got a reply : "our legal people say you are a new entity, so it's $3+K to 'tra...


1mm BGA virgin

Started by Simon in comp.arch.embedded11 years ago 8 replies
PCB

So, having had one of those SMD-friendly infra-red oven heaters bought for me as a birthday present, I'm trying to get my first ever BGA...

So, having had one of those SMD-friendly infra-red oven heaters bought for me as a birthday present, I'm trying to get my first ever BGA pcb made, and I'm finding it more difficult than I'd expected. It's been pretty easy to get PCBs manufactured before, so I'm wondering if I'm doing something fundamentally wrong... There's an image of the prototype board (it's basically a pin-header mount...


PBC Designer software anyone?

Started by Aliasger in comp.arch.embedded16 years ago 3 replies

Hi i'm looking for a freware/shareware softrware which can help me design the PCB layout of the circuit i have already designed. the thing...

Hi i'm looking for a freware/shareware softrware which can help me design the PCB layout of the circuit i have already designed. the thing is, i'm a real amature so i was wondering if there is any software which takes in the circuit diagram from me, and designs the optimum track layout for me. i already have some simple softwares from companies like Niche but that isn't exactly what i'm...


Z8 encore GPIO

Started by Cass in comp.arch.embedded15 years ago 1 reply

Please excuse my ignorance. I just bought the 39.95 Z86423 Encore MCU package. This is the unit that only has three leds (one red, one yellow,...

Please excuse my ignorance. I just bought the 39.95 Z86423 Encore MCU package. This is the unit that only has three leds (one red, one yellow, and one green) instead of the led matrix array. I have gotten the serial port to work and can see printfs, but I would like to play with the GPIO ports. However, it seems that these ports are connected to holes in the PCB. As far as I can tell, th...