K8098 Audio Analizer

Giellio · September 22, 2011, 1:30pm

Dots appear on wrong places .

I found one topic where someone solved the problem with 100NF across the GND and VCC of the PIC.
But for me it doesn’t help .

I wonder if Velleman has a solutuion for this.

I already bought 3 of these kits and they al have the same problem.
I have replaced the pic’s aswell , still the same!

Please Velleman have a look at this problem cause i know i am not the only one with this problem.

If somebody has more solution’s please let us know.
Thank you in advance…

BR Michiel

VEL417 · September 22, 2011, 1:41pm

Between which points and how did you connect the cap?

Giellio · September 22, 2011, 2:35pm

As close as possible to the VCC and GND of the PIC .
I soldered the capicitor on the backside of the PCB.

Unfortunally it didn’t solved the problem

VEL417 · September 22, 2011, 3:04pm

What power supply are you using to power this kit?

Giellio · September 22, 2011, 3:42pm

As close as possible to the VCC and GND of the PIC .
I soldered the capicitor on the backside of the PCB.

Unfortunally it didn’t solved the problem [/quote]

Is there a better way to do it??

Giellio · September 22, 2011, 3:47pm

A switching one from a external hard disk 12v 1A
Do you think a power suply like this is not stabil anough ??
( could be possible)
I wil try again on a 9v batt.

Thank you in advance
i will come back on this BR Giellio

VEL417 · September 23, 2011, 6:36am

Could be interesting to check if the problem is PSU related.