Search found 16 matches

by Geirbakke
21 May 2018 15:59
Forum: Z-Uno
Topic: I have trouble using mcp23017
Replies: 1
Views: 120

I have trouble using mcp23017

Hi, I have trouble getting the correct return to the controller. when I turn on a relay / button it does not return the correct state. The script have 17 sub devices, could it be to large? Temp sensors are retuning correct measurements. But all the relays are not, I have configured to use puss-butto...
by Geirbakke
05 Nov 2017 20:47
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Hi, I use a external voltage regulator for the relay module.
the changing voltage are never above 14.2V (AMG Battery) I have a solar regulator that regulate the changing.

I will change the setup to use 1K resistor on all pins like you suggested.
by Geirbakke
05 Nov 2017 20:15
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Hi petergebruers, If I understand you correctly, I should for safety reason connecting all pins, except 7-18,5v,GND and 3v3 to Ground with a 1K resistor? I am not connecting the ULN2003 directly to the coils (this module have a seperate power supply): https://www.dropbox.com/s/j9s5nh3rihshvjl/Fil%20...
by Geirbakke
05 Nov 2017 18:07
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Cant se anything wrong with the z-Uno


Image
Image
by Geirbakke
05 Nov 2017 18:00
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

here are the schematics:

Image

the power are coming from my cabin 12v solar battery bank.
by Geirbakke
05 Nov 2017 16:18
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Hi, I will post a schematic (just have to draw one first) measuring the pins I can't do until tomorrow my measurement instrument needs battery. Yes, I can't flash the Z-uno before it dies. To summon the connections, i had 6 inputs where I use ground for signal I had 4 relay outputs, and 6 led output...
by Geirbakke
05 Nov 2017 10:40
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Hi, I disconnected the z-uno, And wirhout any external connections it still heats up.

The flash is the only chip thats to hot to touch.
by Geirbakke
05 Nov 2017 02:53
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Re: Hot, 25pe40vp chip (U2)

Hi I’m using 12v car battery

I removed the zuno from the bread board and I gets hot (burning) even on usb connection, about 30 sec.

I have not notis the problem beefore but until now I have only, been doing developments and it has not been on for more than a short time.
by Geirbakke
04 Nov 2017 22:54
Forum: Z-Uno
Topic: Hot, 25pe40vp chip (U2)
Replies: 18
Views: 2375

Hot, 25pe40vp chip (U2)

Have anyone experience the Flash chip 25pe40vp to become extremely hot?

after some seconds the chip gets burning hot and the z-uno stops working.

-Geir
by Geirbakke
12 Oct 2017 22:10
Forum: Z-Uno
Topic: Multiple buttons
Replies: 5
Views: 1074

Re: Multiple buttons

I fond the problem.
the long time=0; declaration should be unsigned long time = 0;

Now the switch are working as it should.

Thanks for looking at it anyway :D