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Old 03-15-2014, 06:21 AM   #1 (permalink)
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Default JLOG / LogView gone crazy

Hi,

Started using my JLog2 again and it seems to be reporting crazy stuff.

- I do a simple hover in Idle1 on my Goblin 630 with Jive80 and JLog2.
- When I look at the file in LogView I see 18 different records (see screen shot below)

- Then when I step through the records one will show a main rotor rpm of 320,000 whilst the next one will show 1,500!



I think I have a knackered Jlog2 :-( I have attached the log file to this post.

Thanks

Mike
Attached Files
File Type: txt log00001.txt (29.3 KB, 47 views)
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Old 03-15-2014, 02:08 PM   #2 (permalink)
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Not JLog, your JIVE gone crazy.

Time stamps in log file, time stamps coming from JIVE:

$1;1;21.10;56;0;-32298;14;8;12;17;33;343;-6;21;21;-4521;-2583;156;14;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
$1;1;21.20;56;135;469;0;5;12;18;35;362;-6;21;21;0;23;156;14;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0; 0
$1;1;0.2200;56;6;467;29;13;12;23;46;473;-6;21;21;135;60;156;29;0;0;0;0;0;0;0;0;0;0;0;0;0;0; 0;0

Back to the future. Time running backwards, 21.20s -> 0.22s -> 22.80s
So LV opens a new log session each time it happens.


$1;1;0.2205;56;2;467;29;18;12;23;48;498;-6;21;21;135;84;156;29;0;0;0;0;0;0;0;0;0;0;0;0;0;0; 0;0
$1;1;0.2270;56;2;467;49;28;12;29;54;552;-6;21;21;229;131;156;49;0;0;0;0;0;0;0;0;0;0;0;0;0;0 ;0;0
$1;1;22.80;56;4;466;0;19;12;-772;59;608;-6;21;21;0;88;156;49;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0; 0
$1;1;23.00;56;17;466;58;32;12;29;60;622;-6;21;21;270;149;156;58;0;0;0;0;0;0;0;0;0;0;0;0;0;0 ;0;0

Also, look here:
$1;1;21.10;56;0;-32298;14;8;12;17;33;343;-6;21;21;-4521;-2583;156;14;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0

Ubat = -3229.8V

Reason:
Your ESC is a JIVE. The JIVE contains two processors and proc #2 sends the serial diagnostic data stream out of the "jumper port".
Although the price is $$$ some details of hardware design directly to be called "cheap".
There is no resonator or quartz for system clock, it's free oscillating, a simple R/C element.

Effect is that the baud rate of the diag data stream is too much deviating. Because the check sum used in data packets is also of a cheap mathematical model --> JLog misunderstands the JIVE.

Remedy: Baudrate Correction in JLC.

Try -2, that had helped in almost every case.
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