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by jeremy_fritz
Sat May 02, 2020 3:29 pm
Forum: Troubleshooting
Topic: External USB drive and Raspberry Pi 4 => Power issues?
Replies: 7
Views: 544

Re: External USB drive and Raspberry Pi 4 => Power issues?

Wensleydale wrote:
Sat May 02, 2020 2:05 pm
I tested a couple of 2.5 inch HDDs yesterday and they draw between 400-500 mA when writing and about 250-300 at idle.
Thanks!
What was the storage capacity of those disks?
Is the storage capacity relevant to estimate the power drawing?
by jeremy_fritz
Sat May 02, 2020 1:03 pm
Forum: Troubleshooting
Topic: External USB drive and Raspberry Pi 4 => Power issues?
Replies: 7
Views: 544

Re: External USB drive and Raspberry Pi 4 => Power issues?

Thanks! I have annoter question about external storage consumption... Do you think this kind of device could be powered by the Pi 4 itself? https://www.fnac.com/Disque-dur-portable-Maxtor-M3-4-To/a10531819/w-4 I can't find official description about how much power does it need to work properly. Do y...
by jeremy_fritz
Wed Apr 29, 2020 2:32 pm
Forum: Troubleshooting
Topic: External USB drive and Raspberry Pi 4 => Power issues?
Replies: 7
Views: 544

Re: External USB drive and Raspberry Pi 4 => Power issues?

Thanks! RPi4B with 5v 3.0A can power single 2.5" HDD connected via SATA to USB3.0 adapter => Are talking about [url=RPi4B with 5v 3.0A can power single 2.5" HDD connected via SATA to USB3.0 adapter]this kind[/url] of adapter? By the way, If I well read this page from raspberrypi.org, I assume the RP...
by jeremy_fritz
Wed Apr 29, 2020 9:32 am
Forum: Troubleshooting
Topic: External USB drive and Raspberry Pi 4 => Power issues?
Replies: 7
Views: 544

External USB drive and Raspberry Pi 4 => Power issues?

Hi, Not sure if this is the better place to post this question since I don't have any issue so far... But could happen and I want to avoid it :D I plan to set up a simple installation based on: - Raspberry Pi 4 - USB Drive (let says 2 To or more if it's possible), like this one: https://amzn.to/3bPc...
by jeremy_fritz
Sun Jan 05, 2020 9:47 pm
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

Very clear!

Thank you so much :)
by jeremy_fritz
Sun Jan 05, 2020 4:38 pm
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

Thank you, it's very helpful! Unfortunately, I do think that 77mA is too much for the Pi. Based on what I read, the 3.3V pins can provide up to 50mA globally ( read here ): The Pi 3.3V rail is widely assumed to provide 50mA, but this is not officially documented for recent Pi models Unfortunately, t...
by jeremy_fritz
Sat Jan 04, 2020 8:53 pm
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

You currently supply the sensors from 5V or 3.3V, not from the GPIO themselves which are only used to provide sensor status Indeed, that's what I said :) Basically, I know how to wire sensors with pins (GPIO and power pins). My installation works but it's not very stable: the RPi ends up not respon...
by jeremy_fritz
Sat Jan 04, 2020 5:56 pm
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

Here is the wiring. Rpi_nanny.png If needed, you will find below links to the components I am using: - temperature/humidity sensor (like this: https://www.adafruit.com/product/385) - sound sensor (like this: https://www.amazon.fr/gp/product/B06WLH ... UTF8&psc=1) - motion sensor (like this: https://...
by jeremy_fritz
Sat Jan 04, 2020 9:37 am
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

GPIO pins are not intended for powering something! GPIO are not but there are 5V pins on the Raspberry Pi. It's enough to power 1 or 2 components but not more in my opinion. Now design a suitable DC/DC (or buy annoff-the-shelf board) that is able to supply your sensors Do you have something to reco...
by jeremy_fritz
Sat Jan 04, 2020 8:55 am
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Re: Which Power solution for a several sensors project?

Hi, Thanks for your reply. I'm sorry, indeed I wasn't clear. I have 2 concerns: CPU usage and Power consumption. About CPU usage , I am currently using a Raspberry Pi 2 and it's a little limited for my project. Maybe I didn't make the right choices but I added a new Docker container for each new sen...
by jeremy_fritz
Fri Jan 03, 2020 4:26 pm
Forum: HATs and other add-ons
Topic: Which Power solution for a several sensors project?
Replies: 13
Views: 1046

Which Power solution for a several sensors project?

Hi! I am working on a baby phone, based on ivadim's project (here: https://github.com/ivadim/fruitnanny) and Raspberry Pi 2. I made some little add-ons (here: https://github.com/jeremyfritzen/fruitnanny, even if I didn't commited last updates yet), based on 3 additional sensors: - temperature/humidi...
by jeremy_fritz
Fri Oct 26, 2018 8:41 am
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Inutile d'en remettre une couche en effet, ne t'inquiète pas pour lui. C'est est surtout un projet technique et, en attendant que le truc soit absolument parfait, il continue à être nourri normalement, par mes propres soins. Par ailleurs, une fois terminé, le distributeur sera beaucoup plus rassuran...
by jeremy_fritz
Tue Jul 31, 2018 7:38 pm
Forum: Français
Topic: Diaporama photo dynamique
Replies: 1
Views: 988

Diaporama photo dynamique

Bonjour à tous, Je cherche à créer un diaporama photo dynamique , c'est-à-dire un diaporama qui afficherait les photos d'un répertoire en présentant également les photos apparues après le lancement du diaporama. Si ce n'est pas clair, je précise un peu mon besoin. Dans le cadre d'un événement, je so...
by jeremy_fritz
Tue Jul 31, 2018 7:20 pm
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Merci Shyne_turtle, Merci pour ta proposition :) J'avoue que ça fait un moment que je ne me suis pas remis sur ce projet et il n'a d'ailleurs pas avancé depuis mon dernier post... Si je comprends bien ta proposition, cela nécessiterait d'avoir un réservoir de croquette situé au-dessus du sas. En eff...
by jeremy_fritz
Thu Feb 01, 2018 6:45 am
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Je parlais d'une roue avec X cases et pas une. J'avais bien compris :) Sauf que, à raison de x cases contenant chacune 4-5 croquettes max (Il n'en faut vraiment pas plus), il va me falloir beaucoup de cases pour seulement 1 ration... Et si ça veut dire de remplir minutieusement chaque case 1 fois p...
by jeremy_fritz
Wed Jan 31, 2018 8:57 pm
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Bonjour à tous, Désolé pour le délai de réponse à certains messages, j'avais un peu délaissé ce projet ces derniers temps... Je n'ai pas vraiment avancé dessus (pas d'évolution majeure) mais comme je vois que certains sont intéressés, je vais m'atteler à la rédaction d'un tuto un peu plus poussé d'i...
by jeremy_fritz
Mon Oct 03, 2016 11:14 am
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Merci pour le retour '! Concernant la cellule optique, l'idée est intéressante. Par contre je ne vois pas quel composant utiliser car je vois mal mon capteur infrarouge actuel réussir à "compter" les croquettes qui tombent. Il suffirait qu'il y en ait 4 qui tombent d'un coup pour que ce soit interpr...
by jeremy_fritz
Sun Oct 02, 2016 12:56 pm
Forum: Français
Topic: Raspbian en adresse ip fixe
Replies: 3
Views: 20288

Re: Raspbian en adresse ip fixe

Merci. En effet, cette manipulation pourrait être utile à pas mal de monde ! Je préfère en effet gérer les adresses IP au niveau du serveur DHCP. Une gestion centralisée est souvent plus simple, notamment pour les raisons qu'évoque Etienne. Fixer l'adresse IP directement au niveau de chaque serveur ...
by jeremy_fritz
Sun Oct 02, 2016 12:43 pm
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Re: Pi Cat Feeder : le projet entièrement revu !

Personne pour me filer un coup de main ? :(
by jeremy_fritz
Fri Sep 30, 2016 7:32 pm
Forum: Français
Topic: Problème de connexion au RPi avec Putty
Replies: 4
Views: 1184

Re: Problème de connexion au RPi avec Putty

Quelques pistes pour diagnostiquer le pb : - Comment le Raspberry Pi est relié au réseau : Ethernet ? Wifi ? - si Ethernet : la diode du raspberry pi correspondante clignote-elle ? - si Wifi : la diode de la clé wifi clignote-elle (si elle en a une, bien entendu) ? - As-tu fixé toi-même l'adresse IP...
by jeremy_fritz
Thu Sep 29, 2016 8:38 pm
Forum: Français
Topic: Pi Cat Feeder : le projet entièrement revu !
Replies: 17
Views: 7014

Pi Cat Feeder : le projet entièrement revu !

Bonjour à tous, J’aimerais partager avec vous mon projet, déjà concrétisé mais toujours en développement : le Picatfeeder ! Je ne vais pas le cacher, je le partage aussi parce que j’aurais besoin de vos avis et de votre aide pour l’évolution du projet :D Il s’agit d’un distributeur automatique de cr...
by jeremy_fritz
Sat Nov 14, 2015 10:56 am
Forum: Automation, sensing and robotics
Topic: Camera robot and Power output concerns
Replies: 1
Views: 545

Camera robot and Power output concerns

Hi, I am trying to build a "turnkey" Camera project, based on the GoPiGo kit: http://www.modmypi.com/raspberry-pi/set-up-kits/project-kits/gopigo-robot-base-kit/?search=gopigo It's written that it's compatible with the Raspberry Pi A+ but my question is: Has the Raspberry Pi A+ enough out power to f...
by jeremy_fritz
Sat Nov 14, 2015 10:32 am
Forum: For sale
Topic: Build a Raspberry Pi Camera Robot (Updated)
Replies: 15
Views: 42658

Re: Build a Raspberry Pi Camera Robot (Updated)

OK. I will ask my question on a different thread.
by jeremy_fritz
Fri Nov 13, 2015 10:33 pm
Forum: For sale
Topic: Build a Raspberry Pi Camera Robot (Updated)
Replies: 15
Views: 42658

Re: Build a Raspberry Pi Camera Robot (Updated)

Thank you guys for your answers.

Do you know how many components can I connect to the Raspberry Pi A+?
How can I calculate this?

Thank you,
Jeremy
by jeremy_fritz
Fri Oct 23, 2015 6:17 am
Forum: Français
Topic: Problèmes avec Rpi.GPIO : le pin est toujours lu à "1" !
Replies: 20
Views: 5467

Re: Problèmes avec Rpi.GPIO : le pin est toujours lu à "1" !

Bonjour,

La réponse est indiquée juste au-dessus :)

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