J-Log.eu - Forum

JLog2 (EN) • Re: jlog 2 no work

2013-07-04T20:49:47+01:00

thanks for the support.
send seller to exchange

Statistik: Verfasst von erotel — 4. Jul 2013, 20:49

JLog2 (EN) • Re: jlog 2 no work

2013-07-04T20:43:04+01:00

Quote:

friend has an older piece JLOG2(not SBL3SPEK) and it works

Well, SBL3SPEK has nothing to do with that. It's a modification in the bootloader which grounds SCL for a while to delay the I²C bus, the sensor scan by the TM1000.

Now I can really only conclude that this JLog has a defect.
Nyní mohu opravdu jen konstatovat, že tato JLog má vadu.

Statistik: Verfasst von dl7uae — 4. Jul 2013, 20:43

JLog2 (EN) • Re: jlog 2 no work

2013-07-04T20:36:52+01:00

dl7uae hat geschrieben:

- Broken servo patch cable. --> Try another one.

I did.the same behavior

dl7uae hat geschrieben:

Of course.. Also JLog may be damaged. Did it ever run?

not run.I bought it today.

friend has an older piece JLOG2(not SBL3SPEK) and it works

Statistik: Verfasst von erotel — 4. Jul 2013, 20:36

JLog2 (EN) • Re: jlog 2 no work

2013-07-04T20:27:20+01:00

Well.. how does a log file look like? Empty?

Your video: SPEKTRUM telemetry (TM1000) is not connected.
No twinkling green LED.. Means, JLog does not see data running in from the JIVE.

Three reasons are thinkable:
- Broken servo patch cable. --> Try another one.
- JIVE have been started with a jumper in the diagnostic port (not the case here).
- Strong deviation of the JIVE's baud rate (diag port). --> Play with Emergency->Baudrate Correction in JLC.

Okay, the log file is empty except of the null record.

Of course.. Also JLog may be damaged. Did it ever run?

Statistik: Verfasst von dl7uae — 4. Jul 2013, 20:27

JLog2 (EN) • jlog 2 no work

2013-07-04T20:10:43+01:00

HI.I have the same problem http://jlog.hacknet.eu/forum/viewtopic.php?f=4&t=213
what is the solution.
I have JLOG2 SBL3SPEK.

I tested the jive in old JLOG2 and work fine.

CONFIG.txt

JIVEinfo.txt

version.txt

log00049.txt

video http://www.youtube.com/watch?v=DyMx65dCNUI&feature=youtu.be

Sorry my english

Statistik: Verfasst von erotel — 4. Jul 2013, 20:10

JLog2 (EN) • Re: Advice on how to power luxeon alarm

2011-11-02T13:59:16+01:00

It is not directly unsafe w/o opto. So you may go on the no-opto version with the 10k resistor providing that the LED is off with an open input.

Statistik: Verfasst von dl7uae — 2. Nov 2011, 13:59

JLog2 (EN) • Re: Advice on how to power luxeon alarm

2011-11-02T12:18:58+01:00

Thanks for quick reply !

dl7uae hat geschrieben:

You know that? http://62.153.249.80/jlog/jlog2-en/alarm-devices-for-jlog2-v3-2up

Yes, this is what I am trying to understand

dl7uae hat geschrieben:

Do you have a series resistor in the path collector-BD243--Luxeon?
Well, also with no resistor the pulses in mode "flash" are short enough (32ms) to be able to drive a power LED by overcurrent without burning it.

No, but I think I will add one to be safe

dl7uae hat geschrieben:

But: Attention! If you flash the logger or disconnect the alarm device (control) from the logger the LED will be ON continuously! If you do not use an optocoupler in front then the 10k resistor here http://62.153.249.80/jlog/wp-content/uploads/2011/06/Alarm_device_JLog2_v3.2up-2.jpg will avoid that. The only disadvantage is that there is no alarm in case of the alarm device is disconnected from the logger or the logger lost its supply voltage. But that kind of alarm w'd be anyway a continuously burning LED, "burning" in the meaning of the word, perhaps. (In case there is no current delimiting series resistor.)

So we cannot avoid 'open-input=steady on' unless we skip the opto ?
How safe is it to skip the opto ?

Statistik: Verfasst von zmooth — 2. Nov 2011, 12:18

JLog2 (EN) • Re: Advice on how to power luxeon alarm

2011-11-02T11:05:42+01:00

Modified the above post, --> refresh!

Statistik: Verfasst von dl7uae — 2. Nov 2011, 11:05

JLog2 (EN) • Re: Advice on how to power luxeon alarm

2011-11-02T10:52:16+01:00

Hi!

You know that? http://62.153.249.80/jlog/jlog2-en/alarm-devices-for-jlog2-v3-2up

Do you have a series resistor in the path collector-BD243--Luxeon?
Well, also with no resistor the pulses in mode "flash" are short enough (32ms) to be able to drive a power LED by overcurrent without burning it.

But: Attention! If you flash the logger or disconnect the alarm device (control) from the logger the LED will be ON continuously! If you do not use an optocoupler in front then the 10k resistor here http://62.153.249.80/jlog/wp-content/uploads/2011/06/Alarm_device_JLog2_v3.2up-2.jpg will avoid that. The only disadvantage is that there is no alarm in case of the alarm device is disconnected from the logger or the logger lost its supply voltage. But that kind of alarm w'd be anyway a continuously burning LED, "burning" in the meaning of the word, perhaps. (In case there is no current delimiting series resistor.)

Series resistor collector-LED: Ualarm (supply voltage of the alarm device) minus forward voltage (of the LED, check out the specs) devided by LED current (R=U/I).

Statistik: Verfasst von dl7uae — 2. Nov 2011, 10:52

JLog2 (EN) • Advice on how to power luxeon alarm

2011-11-02T10:31:55+01:00

Hello, nice forums ! I am very happy with my J-Log and with normal LED alarms.

But I've got some Luxeon LED that I wanted to use instead, so I made a new alarm device circuit with stronger transistor (BD243) and it works great with my current-limiting bench PSU and this Luxeon LED (this one: http://www.sparkfun.com/products/9634), current is about 300mA at 3.7V and visibility is much better. Now, how to power it on-board ? If I was to use a single-cell LiIon/LiPo do I need current limiting circuit so I won't blow out my LED ? Or am I safe because of the pulses ?

Thanks in advance

Statistik: Verfasst von zmooth — 2. Nov 2011, 10:31

JLog2 (EN) • Re: JLog2 does not create new logfiles

2011-09-05T08:40:28+01:00

Good Morning Bert!

Quote:

BTW: is there a way of knowing that the card is corrupted from the LEDs?

Yes and no... If the implementation of the file system FAT16 detects an error the red LED lights up (general fault detector).
But, well, while physical access failures detected with high reliability, it is for the file system only partly the case. The FAT16 library is kinda "spartan" of course, we're on a microcontroller with limited memory, ROM and RAM. So we do not really have a chance to detect each possible problem within the file system. Even a native OS wouldn't have a chance to.

On Windows, in a command shell: "chkdsk "
Do not let "chkdsk" repair the file system, re-format the SD: "format ".
In severe cases, use the SD formatter: https://www.sdcard.org/consumers/formatter_3

The worst enemy of the file system is the operating voltage of the logger. Particularly problematic is the use of Greencaps in connection with a series resistance against the "Lightning".
The "LED show" is part of a 5-second hold loop at startup against "crazy voltage", waiting for that calmed the supply voltage.

Use the SD, once formatted, not in other devices such as cameras, for example.

-----
And btw: No need to copy the CONFIG.txt back to a reformatted SD "by hand". JLog remembers the last good configuration in his EEPROM (non-volatile memory) and will regenerate the file by itself.

Statistik: Verfasst von dl7uae — 5. Sep 2011, 08:40