with 2 USB hosts (up to 2x0.5A source) , Ethernet ( about 0,1A) and MCU at 454Mhz wit SDRAM (about 0,3A) we will need serious 2A power supply so far the DC/DC...
32
bobcousins34
Mar 13, 2012 7:23 am
For industrial users, providing the right power for equipment is a bread and butter job. If you spec it at 5V, 2.5A there are off the shelf adapters that will...
33
bobcousins34
Mar 13, 2012 7:39 am
... I guess we are talking two different things here. My current client uses mainly Freescale CPUs in embedded applications, with similar spec to imx233. I had...
34
raivisrrkb
Mar 13, 2012 8:01 am
well, my customers are different then, one of them is actually waiting what comes out of this project. They couldn't care less what runs on the device as long...
35
olimex
Mar 13, 2012 8:38 am
as we target both hobby users (who will use adapters of any kind) and industrial apps we could place provision to by-pass the input DCDC, so who wants could...
36
attila.asztalos@...
attila.aszta...
Mar 13, 2012 9:29 am
A few quick questions: - I certainly appreciate the LCD signals as GPIO on the 40-pin connector, but isn't the QFP package (that I understand you intend to...
37
olimex
Mar 13, 2012 10:03 am
... yes, this is correct ... there is Audio-In and Audio-Out connectors, the microphone is wired to the GPIO to be used as ADC I know that if we get together...
38
Attila
attila.aszta...
Mar 13, 2012 10:13 am
This message got a bit lost, sorry. I'm re-posting it below: I'm quite fine with a 5V supply input, but if you do intend to integrate a DC/DC, you should...
39
olimex
Mar 13, 2012 10:28 am
can you please let me know for low cost, industrial temperature grade 2A DCDC with up to 40-60V input voltage and 5V output? for the moment the used DCDC...
40
Attila
attila.aszta...
Mar 13, 2012 10:29 am
... Oh, I do appreciate the hacker-friendly packaging and intent, I was just wondering whether having headphone-out on a 3.5mm jack but mic-in as a pin only...
41
raivisrrkb
Mar 13, 2012 10:35 am
besides, you wouldn't want to go with huge displays on this device as it only supports 64MB of RAM and and huge LCD would eat up all of that RAM in frame...
42
Attila
attila.aszta...
Mar 13, 2012 11:39 am
... Sure - take the (ex-)National Semiconductor LM2576; 5V / 3A with input from 4.75V to 40 V, TO220 through-hole, listed on Mouser for 0.84Euro/1K, while the...
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olimex
Mar 13, 2012 11:50 am
... LM2576 is huge and work at 50kHz so require big inductor MP1482 works at 340kHz it's small and elegant in SOIC8 and require small low profile smt inductor...
44
Attila
attila.aszta...
Mar 13, 2012 12:55 pm
... Well, a similarly specced part for 32V from the same manufacturer (the MP2403) comes in about 1 euro more - I guess it depends on the budget constraints...
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olimex
Mar 13, 2012 3:06 pm
I uploaded picture with the first preliminary component locations on the PCB. I would love to hear your comments and suggestions. On the left side are the...
46
trygvis@...
trygve.laugstol
Mar 13, 2012 3:16 pm
... As a hobbyist I would prefer all the connectors to be on two connected sides. This makes it easier to find a suitable box to put it in as all boxes have...
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olimex
Mar 13, 2012 3:28 pm
thanks for your comment! I'm also thinking for suitable box :) as this board will look much nice in plastic enclosure like DuinoMite-Mega for instance...
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olimex
Mar 13, 2012 3:57 pm
to have all connectors on two sides only the board side with the connectors should be 80 mm, so we look for box with front/back panel size 90 mm and length...
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olimex
Mar 14, 2012 7:40 am
Hammond 1593LBK is good candidate for the MINI version with only 1 USB port http://parts.digikey.com/1/parts/7270-box-abs-3-63x2-61x1-10-black-1593lbk.html at...
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raivisrrkb
Mar 14, 2012 7:44 am
Hi, Not sure if I can pull files posted on Freescale forums and publish them here, so here come the links: BitBurner utility to program OTP bits (Win only): ...
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olimex
Mar 14, 2012 9:15 am
... these are very weak pull up/down and will not affect LCD...
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olimex
Mar 14, 2012 5:08 pm
one of our suppliers just found the perfect box for the full featured board with the 2xUSB hosts and Ethernet: ...
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bobcousins34
Mar 14, 2012 7:09 pm
... I'd forgotten that. So that means we can use parallel JTAG without worrying about 16 bit LCD....
54
bobcousins34
Mar 14, 2012 7:48 pm
... Sure, industrial/commercial is the thing I was thinking of. I've been doing a little more research into the general embedded Linux market, and it seems...
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raivisrrkb
Mar 14, 2012 8:29 pm
I've done my homework and apparently at this moment only way to go with iMX233 is Freescale LTIB. It is outdated, but it contains only kernel with more or less...
56
bobcousins34
Mar 14, 2012 9:05 pm
Ok, I am still playing catch up ;) I have been searching for imx233 linux variants and it's a bit thin on the ground. I can see various people doing...
57
raivisrrkb
Mar 14, 2012 9:11 pm
First thing is USB host driver, without it OLinuXino will not have ethernet, easiest of them all is probably SPI driver, as there is IMX28 SPI driver, just...
58
trygvis@...
trygve.laugstol
Mar 14, 2012 10:17 pm
... It's definitely interresting, kernel hacking is fun. I'm just waiting for Olimex to complete the board :) -- Trygve...
59
Attila
attila.aszta...
Mar 15, 2012 11:09 am
I have to admit I'm rather fond of round dimensions, such as the mini2440 (100x100mm, holes <- 92mm ->) or the mini/nano/mobile-ITX (170x170/120x120/60x60mm) -...
60
olimex
Mar 15, 2012 12:53 pm
indeed the space is tight but the benefit is that the board can fit in your pocket nicely I just uploaded in the photos the component placement in this box the...
