They substituted it with a Chinese replica that fitted quite poorly to the original Molex mating part.
you are making the probably incorrect assumption that that connector was supposed to mate with a molex connector. there is probably a proper mate that you did not purchase
avoid all parts from ebay, especially china. goes without saying, but they are all likely fakes or factory rejects or even used parts that were manually removed!
this is true for semiconductor devices. but for switches, connectors, crimp pins, etc. you are just wasting your money. the connectors you get for super cheap on ebay are 100% indistinguishable from the ones at mouser that cost 10x more.
Or you could use a canned crystal oscillator instead. These are quite fool proof.
except when their duty cycle or rise time is not compatible with the SOC
except when the oscillator costs more than the SOC (look up parts costs! you will be shocked at what oscillators cost)
I even saw one that could run USB without a crystal.
this is not due to an "accurate" rc oscillator, this is because the USB host generates a pulse of precise duration and the USB device can calibrate its oscillator to the pulse duration.
It's not a bad idea to put holes or pads for despiking capacitors all over the board, at least one per chip in your design.
read the documentation carefully for your system on chip. sometimes the best practice is a little more involved than that. some of the more complex ones have internal dc-dc converters that require external capacitors, they need extra care in layout.
fritzring is fun for simple stuff, but if you try to make a moderately complex board you will find that their parts libraries are pretty scant and you will end up spending a lot of time in the parts editor.
Do not use any of the express layout tools if you are handling a CPU.
This is 100% untrue. These are modern, system-on-chip designs. Many of them are 100% self contained and they will fire up and run with just power applied. The only external circuitry required in many circumstances is a quartz crystal and its tuning capacitors. Even these are only required in applications where the SOC's internal RC oscillator is not accurate enough. You do need to use care in laying out the crystal, but SOC manufacturers issue application notes detailing the requirements necessary for reliable operation.
First, don't roll your own PCB with a microcontroller on it unless you know what you're doing. T
Modern processors are systems -on chip. Just about all of the external wiring is low frequency. The only high frequency signals emerging from the SOC are the connections for the quartz crystal. If you download and follow the manufacturer's guidelines for crystal layout you will be good.
I wouldn't make a PCB for one project, I'd use a perf. board.
Not so good for modern low-power chips with low-power crystal oscillator designs. Your prototype will have serious reliability issues if you don't adhere to the manufacturer's guidelines for use of ground planes and layout.
If you really want to do this, you can get "mini system" boards that have the processor and the crystal circuitry. You can easily mount one of these on a perf board.
they solder an atmel chip on a board, pick an arbitrary pinout, borrow other people's software, and pretend that they "own" some sort of "secret sauce"
then they make a special web page where they cry and whinge about having to "compete" and they impugn competing products and infer that they are "inferior"
in the end their biggest legacy will be the matching ferraris in their lawyer's driveway
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
they are not content to allow the competitors to exist, they say expressly that they are going to make negative statements about any and all of their compeitors
What they're complaining about is not people using their designs
read it again:
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
if this is not whinging about competitors, what is?
"we had the issue of figuring out a business model to sustain our work and keep innovating the project"
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
so despite the fact that they are putting free software licenses on their products, they seem to have some sort of remorse about choosing such a liberal model and so they try to "walk it back" by attaching strings and conditions, somehow they think they they can still be the arbiter of products with free software licenses
it's no wonder they've had legal problems, they don't respect the laws they pretend to uphold.
Arduino, this is something made by the "other guys".
you mean the people who release product information under free software licenses and then make a big nasty stink when other people make legal use of this information?
these call centers are fronting for operations that could care less about whether their customers are angry or happy. just about every big operation these days is a monopoly, and the customers are going nowhere. they don't need to solve customer problems or soothe the raging callers. the only real motivation is to talk the customer out of more money.
The purpose of the modern call center is to "solve" customer problems in the most cost efficient manner.
Nope the purpose of the modern call center is to enhance the resume of the manager who runs it. The modern call center is just about always associated with a monopolistic venture with captive customers, so their happiness of the customers and the number of complaints in the queue are simply irrelevant numbers ignored by everyone.
unless you've been living under a rock or in a cave, you've undoubtedly made some sort of financial transaction where you felt like you got ripped off. how did that feel to you? so are you a special different kind of human or maybe perhaps you might be able to comprehend that these people feel like you did. do you need a manual or a book to explain the human experience?
Slashdot Mirror
They substituted it with a Chinese replica that fitted quite poorly to the original Molex mating part.
you are making the probably incorrect assumption that that connector was supposed to mate with a molex connector. there is probably a proper mate that you did not purchase
avoid all parts from ebay, especially china. goes without saying, but they are all likely fakes or factory rejects or even used parts that were manually removed!
this is true for semiconductor devices. but for switches, connectors, crimp pins, etc. you are just wasting your money. the connectors you get for super cheap on ebay are 100% indistinguishable from the ones at mouser that cost 10x more.
Or you could use a canned crystal oscillator instead. These are quite fool proof.
except when their duty cycle or rise time is not compatible with the SOC
except when the oscillator costs more than the SOC (look up parts costs! you will be shocked at what oscillators cost)
I even saw one that could run USB without a crystal.
this is not due to an "accurate" rc oscillator, this is because the USB host generates a pulse of precise duration and the USB device can calibrate its oscillator to the pulse duration.
It's not a bad idea to put holes or pads for despiking capacitors all over the board, at least one per chip in your design.
read the documentation carefully for your system on chip. sometimes the best practice is a little more involved than that. some of the more complex ones have internal dc-dc converters that require external capacitors, they need extra care in layout.
fritzring is fun for simple stuff, but if you try to make a moderately complex board you will find that their parts libraries are pretty scant and you will end up spending a lot of time in the parts editor.
Do not use any of the express layout tools if you are handling a CPU.
This is 100% untrue. These are modern, system-on-chip designs. Many of them are 100% self contained and they will fire up and run with just power applied. The only external circuitry required in many circumstances is a quartz crystal and its tuning capacitors. Even these are only required in applications where the SOC's internal RC oscillator is not accurate enough. You do need to use care in laying out the crystal, but SOC manufacturers issue application notes detailing the requirements necessary for reliable operation.
First, don't roll your own PCB with a microcontroller on it unless you know what you're doing. T
Modern processors are systems -on chip. Just about all of the external wiring is low frequency. The only high frequency signals emerging from the SOC are the connections for the quartz crystal. If you download and follow the manufacturer's guidelines for crystal layout you will be good.
I wouldn't make a PCB for one project, I'd use a perf. board.
Not so good for modern low-power chips with low-power crystal oscillator designs. Your prototype will have serious reliability issues if you don't adhere to the manufacturer's guidelines for use of ground planes and layout.
If you really want to do this, you can get "mini system" boards that have the processor and the crystal circuitry. You can easily mount one of these on a perf board.
they solder an atmel chip on a board, pick an arbitrary pinout, borrow other people's software, and pretend that they "own" some sort of "secret sauce"
then they make a special web page where they cry and whinge about having to "compete" and they impugn competing products and infer that they are "inferior"
in the end their biggest legacy will be the matching ferraris in their lawyer's driveway
duh, I copied that stuff from their web site today
read it again:
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
they are not content to allow the competitors to exist, they say expressly that they are going to make negative statements about any and all of their compeitors
What they're complaining about is not people using their designs
read it again:
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
if this is not whinging about competitors, what is?
they have a very negative point of view about people who actually believe in free software:
http://blog.arduino.cc/2013/07/10/send-in-the-clones/
"we had the issue of figuring out a business model to sustain our work and keep innovating the project"
"we also realized we needed a way for people to be guaranteed that
they were buying a quality product that would replace any defective item, should problems arise
they were contributing to a community that would bring forward open-source values and knowledge sharing"
so despite the fact that they are putting free software licenses on their products, they seem to have some sort of remorse about choosing such a liberal model and so they try to "walk it back" by attaching strings and conditions, somehow they think they they can still be the arbiter of products with free software licenses
it's no wonder they've had legal problems, they don't respect the laws they pretend to uphold.
Arduino, this is something made by the "other guys".
you mean the people who release product information under free software licenses and then make a big nasty stink when other people make legal use of this information?
http://blog.arduino.cc/2013/07/10/send-in-the-clones/
"free software is great but only for us"
I generally just drop shitty companies. It's worked great for me so far.
If you throw them instead you won't get shit on your shoes and the floor
what should they call your wife?
these call centers are fronting for operations that could care less about whether their customers are angry or happy. just about every big operation these days is a monopoly, and the customers are going nowhere. they don't need to solve customer problems or soothe the raging callers. the only real motivation is to talk the customer out of more money.
The purpose of the modern call center is to "solve" customer problems in the most cost efficient manner.
Nope the purpose of the modern call center is to enhance the resume of the manager who runs it. The modern call center is just about always associated with a monopolistic venture with captive customers, so their happiness of the customers and the number of complaints in the queue are simply irrelevant numbers ignored by everyone.
i prefer money that isn't fucking, you don't have to wipe it off
Every call center I've ever encountered is designed to ask you if you power cycled your thing
Yeah, I got that when I called the bakery about the missing raisins in my raisin bread. They asked me to power cycle the loaf and cut another slice.
where do you find these special human beings who are not angry and rude to begin with?
why customers were angry to begin with
unless you've been living under a rock or in a cave, you've undoubtedly made some sort of financial transaction where you felt like you got ripped off. how did that feel to you? so are you a special different kind of human or maybe perhaps you might be able to comprehend that these people feel like you did. do you need a manual or a book to explain the human experience?
the water intake valves will get too clogged with marine detritus without divers to periodically clean them.
marine detritus? since when is there seawater behind hoover dam?
wrong
real men pay grunts like you to run their email
please flush after dropping a stinker