search

vitotai / BrewPiLess

Use an ESP8266 to replace RPI and Arduino. Running BrewPi without Pi, therefore, BrewPi-Less
349 stars 131 forks source link

Hardware: are there any plans for a decent BPL case? #26

Closed tommueller closed 6 years ago

tommueller commented 6 years ago

I would love to finish my BPL-build soon and use it to control my fridge. Currently this is done by an Inkbird. But I do want to have a decent case for the BPL first, as there are high-voltages going to the SSRs. Are there any plans available? Models for 3D-printers? Lasercutter? Or maybe some people could just post some pics of their setups to inspire me ;)

Maybe there is even a PCB to build everything together cleanly?

Cheers Tom

jalexandre0 commented 6 years ago

I´m using the PCB and cases from my old project. It is a plastic case and basic PCB, built to be hided behind refrigerators, so beauty and LCD stuff is pointless.

Some pictures: https://loja.brassar.com.br/saci-controlador-de-temperatura-web

Schematics: https://github.com/jalexandre0/saci-temperature-controller/tree/master/schematics

PS: I´m using coil relays instead SSR´s. They are cheap, small footprint, easy to buy and get the job perfectly done. :)

tommueller commented 6 years ago

@jalexandre0 cool, that looks good!

Can you post a link to the coil relays? How many Watts can they cope with? Enough for a fridge and a heating device?

vitotai commented 6 years ago

Robert from Sweden has designed a board. http://www.homebrewtalk.com/showthread.php?t=596907&page=8

jalexandre0 commented 6 years ago

@tommueller I use relays like these 5V and 10A -> https://pt.aliexpress.com/item/10Pcs-SRD-05VDC-SL-C-DC-5V-Rating-Coil-SPDT-Miniature-Power-Relay-Blue/32753270224.html

Most refrigerators (in Brazil...) have less than 2A of current. Heat element can vary. I take the simplest route and use a lamp. Cheap and effective.

If you have any questions, just ask.

universam1 commented 6 years ago

Did someone evaluate the Sonoff devices already? There are various editions available that could be used as a good base. I ordered one, lets see.

tommueller commented 6 years ago

@universam1 that is a great idea! Never used one of them, but they look perfect for the job. Looking forward to your comments on it.

vitotai commented 6 years ago

Some information about SONOFF: http://www.homebrewtalk.com/showthread.php?t=587425&page=25

Due to the small 1M flash size, the default configuration of SONOFF doesn't support

  1. LCD
  2. Web OTA update
  3. File Manager The space of file system is 512K.

To support OTA, double program space is needed. Current program size of BPL is around 450k, and that means at least 900k is needed to support OTA, which leaves only 128k or 64k file system space.

allthepies commented 6 years ago

It is possible to swap out the flash chip for a larger one though :)

vitotai commented 6 years ago

@allthepies You can. https://www.youtube.com/watch?v=8mz5sCAvDAY But I don't think I can do it. It's too difficult for me.

universam1 commented 6 years ago

There are different editions with various features available, do they all have the same memory chip?

vitotai commented 6 years ago

There are different editions with various features available, do they all have the same memory chip?

They don't list the flash size in the specifications, but I think they are all the same.

tommueller commented 6 years ago

My thinking was to use 2 of the sonoff smart plugs (like this: https://www.amazon.de/VIGICA-Steckdose-intelligente-Fernsteuerung-Android/dp/B073GNFVDM/ref=sr_1_36?ie=UTF8&qid=1505463692&sr=8-36&keywords=sonoff+switch) and switch them on/off from BPL.

lekrom commented 6 years ago

Dear @tommueller, @allthepies started a google group to share some stuff regarding BPL builds: https://groups.google.com/forum/#!forum/brewpiless I posted my PCB design as well as my 3D-printed enclosure design if youre interrested. -Lekrom

tommueller commented 6 years ago

Hey @lekrom , that is great, thanks for the link! I do not have a google account though ... so I'll ask here... what size is the whole on top for the screen?

tommueller commented 6 years ago

Which Sonoff by the way are we talking about? I find many different versions ... Because they only have one socket, right? How can you then have a cooling and a heating device connected?

universam1 commented 6 years ago

take this one for example, the dual: http://www.exp-tech.de/itead-studio-sonoff-dual-wifi-wireless-smart-switch And switching the flash chip is probably way easier than any other DIY attempt: http://www.andremiller.net/content/upgrading-sonoff-wireless-smart-switch-flash-memory-esp8266

vitotai commented 6 years ago

I wonder why they don't make 4M bytes version. Chinese manufacturers are usually flexible. Maybe they can accept a customized order for a quantity, say 1k.

quimnut commented 6 years ago

I was reading the sonoff dual's relays are controlled by serial unfortunately. https://github.com/arendst/Sonoff-Tasmota/wiki/Sonoff-Dual

vitotai commented 6 years ago

More detail information: http://tinkerman.cat/esp8266-multi-relay-boards-sonoff-dual-electrodragon/

It's interesting that 2ch uses additional chip while 4ch uses GPIOs.

BrewPi supports SSR control over OneWire, OneWireActuator. I haven't tested it but the idea is basically the same for GPIO extensions. Just different buses, OneWire, I2C, and UART. It's possible to support that UART GPIO extender in the same way that OneWireActuator does.

tommueller commented 6 years ago

I will close this, as the dicussion has been inactive for a while now.

Scarabrew commented 6 years ago

@tommueller I just finished two different cases for the BrewPiLess: One in 3D printing and one using acrylic. https://www.thingiverse.com/thing:2924101 https://www.thingiverse.com/thing:2787182

Any help feel free to contact me.