Hi all, I'm from Italy and I'm using the DirtyPCBs service since some years and I'm very satisfied of it.But in my last order I had an issue, I chose "DHL China" as shipping option (this is the first time since I always opted for airmail).The PCBs arrived after some days but I had to pay custom duties for a value which is nearly the cost of the order.The order was $35.95 and I paid 23.57 euro (roughly $27) for custom duties.Now I have to place another order so I wonder how I can avoid this to happen again (I want obviously a faster shipping with DHL).Is it possible to declare in the attached commercial invoice only the cost of the service (16.95 for the protopack) excluding shipping?Thanks.
P.S. Is the DHL Hong Kong option the same of China one?
Pardon for the off topic, this is an call for everyone who knows a french guy called Lyderic M. (can't tell the surname for privacy), his nickname is 'Lydux' on various forums.I know for sure he was a beta-tester of the Open Bench Logic Sniffer.I've been in contact with him until last year (around July 2015) then I lost track of him.He didn't reply to my e-mails, I tried also to contact him via regular mail but my letter has been returned due addreesse unknown at marked adress (his address was right since we were used to trade electronics stuff).I'm afraid something bad has happened to him.So, please, contact me if someone has news about him.Thanks.
HI all, I'm an happy owner of a Open Logic Sniffer rev 1.04 I have some troubles after upgrading it to Demon Core v3.The acquisition starts immediately also when there are no signal (when the UUT is powerd OFF) .This issue is present also when I enable the trigger with a LOW signal.Also here the acquistion start just after I press the CAPTURE button without waiting for the asserted signal. With the old version of bitstream and firmware this issue was not present.
Some question now: if I want to do some state analysyi I presume I have to use external clock (from UUT ) connected to the unpopulated headers on OLS.So, which is the right procedure to use external clock?
What is the 'scheme' (INSIDE/OUTSIDE) option for?Is "noise filter" option useful?
[quote author="tkg"]There are various things that can be done, it all depends on your intended workflow. It is a bit unclear what the problem are you trying to solve, more exactly if you want to also generate signals from the OLS or just record the inputs and output(s) of your circuit and evaluate that in software say on your PC or on the PIC or even on the FPGA. [/quote]
Hi and thanks for replying.No, I just want to sniff for inputs and outputs and validate the logic functions of the TTL.Let's say I want to test an inverter LS04 in-circuit, so I clip the IC on the unit under test and measure signals of each pin (including VCC and GROUND).SO, let's say, If all input 1-3-5-9-11-13 are '1' then the outputs 2-4-6-8-10-12 should be '0'.Here I'd want something that could tell me if the logic functions are OK without analizyng the single singla on each pin and then comparing them looking at the truth table. Obviously , besides gates, also voltage on VCC pin would be monitored and validate .
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As you mentioned in circuit I assume you have the simple scenario where you generate the signals from other boards (or internally on the board where you have the ttl circuit connected) and connect say the inputs of the circuit to test and its output say as 3 signals to OLS, and use a PC to capture and evaluate the results based on your intended functionality. This should be relatively simple.
Yes, obviously, signals would be generated from the unit under test and not from OLS.
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2) Just bypass the GUI and use the sump protocol to talk directly over the serial link to the PIC uC, make a capture and evaluate the results.
I would recommend option 2 that gives you quite some flexibility. I used a simple command line/console app (if I remember correctly I modified the bus pirate firmware updater, that has all the serial port "glue" in place and just updated the commands to send) to capture traffic from a clock/weather station and decode the time and temperature from there.
This solution has the advantage that you can easily do want you want with the captured data or when to capture. You could do automatic retrigger using a loop or pressing a key and the program could capture the stream and interpret it instead of pressing the capture button in the java client and the exporting or using a protocol analyzer.
Regards, tkg
I think someone already did what I mean or it could be a nice feature to add to OLS.Anyway I will study the protocol and try to implement something. Thanks again.
Hi all, Just wondering if it would be possible to use ihe Logic Open Sniffer as a logic comparator to test logic functions of TTLs in circuit , I think something could be done with CSV exporting format.Anyone has tried this? Thanks in advance
