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by Texandro
Wed Sep 11, 2019 3:56 pm
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

Re: RPi 4 - power problem

Hi hippy, Thx for the reply, there are resistors on the leds and the opto, as they're preassembled with it. They come in kit for the ones we use here. This plan is just a drawing to know what is wired where. Not a production ready plan. Thank you for the note on the opto's led on the diagram, I did ...
by Texandro
Wed Sep 11, 2019 10:44 am
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

Re: RPi 4 - power problem

Authorized reseller : kiwi electronics
by Texandro
Wed Sep 11, 2019 8:58 am
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

Re: RPi 4 - power problem

Hi all,

I did order a new batch of raspberry pi's.

No problems with that batch. tested the hardware with 3 other pi's. :D :D :D

Is there something i can do with my previous batch?


Ty all

Texandro
by Texandro
Fri Sep 06, 2019 2:15 pm
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

Re: RPi 4 - power problem

The first one did boot and did work. I made all the dev and testing on the unit. the second one (new batch) had problem immediatly. thought it was because of the hw. The third (new batch) never booted without the pihat so without the hw. so : first one : functionned a limited amount of time. second ...
by Texandro
Fri Sep 06, 2019 1:04 pm
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

Re: RPi 4 - power problem

Hi! Thank you for the reply. As I said I did encounter the problem without the protohat on it... That's why i'm not sure about it being a problem with the protohat or the wiring. As it is verry simple. still here is diagram and photo of the wiring. phonesimulator.png protohat.jpg protohat1.jpg Could...
by Texandro
Fri Sep 06, 2019 10:09 am
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 610

RPi 4 - power problem

Hello everyone, I am a developper for belgian industry in museum creation. I do love to use the pi, but have run into much trouble with the pi 4. This si the setup: pi 4 raspberry pi's power supply Kingston industrial crade 32gb sd card permaproto hat wired to a perma proto hat : 3 leds 1 relais boa...
by Texandro
Tue Aug 06, 2019 9:53 am
Forum: Beginners
Topic: Raspbian - boot TK python app after login
Replies: 1
Views: 149

Raspbian - boot TK python app after login

Hey fellow Raspi users :D , I finished coding my first application in python for the rpi. I did chose the pi for the GPIO that was built in. And python because i already knew that language. My app is verry basic : 3*4 matrix, launches sounds whenever the keycombinations match a preset of keycombinat...

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