Smart - Coffee: Arduino Mega version

This is bloody amazing, Any way to keep up to date with the ESP 32 development. It would be cool if you could also integrate Home Assistant with this!! Also, I do definitely plan on getting the ESP version. I'm wondering if you could provide a updated list of sensors that I should still be getting? It would be nice to prepare for this version ahead of time and get everything needed. I have a Rocket Espresso Giotto Evoluzione R, I assume this would be compatible as well?

I just purchased and waiting arrival of the Smart Coffee board. In planning my task i noticed the max current on the on board SSR is 10A. Ny machine, an Expobar Office Lever has a 1200 W element. Should i plan on using an external SSR for the heating element. Worried about if any heat sink is on onboard SSR. Yhanks and looking forward to receiving the kit.

Hi Amon

Thought I would let you know I finished the Rancilio Miss Silvia mk3 designing and 3d printing a few new mods including an all in one Group-head cover with combined PID, Group Temp Gauge, LED Lighting & Flashing Red LED's when the water tank gets low.

So I am now going to use your New Software / Hardware for my latest project a Izzo Vivi my2 which was sold to me as good condition? (you got to love eBay Sellers) check this out ( Stress ball not Included )

Cheer's

Great project and just what I too have been contemplating for my 2007 Rocket Giotto Premium plus HX machine. My machine, bought new in 2007, has been faithful and reliable and I recently did a major service and expect another 10years out of her. However, I've been hankering to bring the hardware into the modern era with just such a project.

Anyway, I came here to suggest an option that may have already been mentioned by one or two others here already.

I'd really like to avoid having to drill any extra holes (if at all possible). A way potentially around that is to replace the pressure gauge (one fitted in my case) with an electronic multipurpose one that either has at least one manual button for the espresso profile and/or a touch screen that can be menu oriented where the options really open up to all sorts of possibilities.

Once again, great job and yet another innovation from our Kiwi cousins from across the ditch. 🏆

Hey Schematix this project looks awesome and exactly what I'm after! I have a Bezzera BZ99 with a dead Gicar logic board.

I hope it's not a stupid question, but the BZ99 has two boiler probes, from what I see in this project it utilised only one, would I be correct in assuming it'd still work okay and the controller would just connect to one or the other of my BZ99's probes?

Hi

I have just bought a 2012 Rancilio Miss Silvia (V3) and have been looking around at different PID options. I have already done a PID with other other mods on my first ever machine ( 4 months ago ! ) its a Gaggia Cubika (2006). After looking at a few options I came across your video by chance and think your Smart Coffee would be the best option If its possible. I am a retired Electrical Mechanical Engineer so adding parts to make the Silvia a viable option for your Software / Hardware should not be to much trouble. If you think its possible I am up for a challenge. Just subbed to your YT channel so lots to watch while i wait. Later Garp

This project looks great,

I have a single boiler machine and have a few questions:

• Is there a way to add the extra switch to change the boiler to steam mode?

  
  

• I assume the connection to the switch for the pump when draining hot water from the steam wand is connected to the pump as usual. Is this correct?

  
  

• Is there a possibility to change the screen to a round one, I would like to place the screen where the manometer is now.

BR

Hi,

I've got everything working (except the flow meters, but I'll get there) and all is well on a Lelit Mara. What I'd like to do is something similar to the Mara X, where you have a 3 way switch that sets the temperature range (or kPa in my case). I realise it just needs to poll pin states, but I'm having trouble trying to get it to work. Another one for steam mode would be handy too.

SETTING I: 92°C – balanced, nutty and chocolatey cup (light-roast)

SETTING 0: 90°C – fruity, acidity and smooth cup (mid-roast)

SETTING II: 94°C - bitter and more intensive cup (dark-roast)

Hello, it's very informative but what do you think about this, a lil bit different:

https://jiskr.com/smart-coffee/

hi there, amazing work! , is it possible to adapt your system to a rocket appartamento ?

Hi mate! thank you for your time and material shared! brilliant! I'm following your project, if is there any new update regarding dual boiler? mine is expobar office Leva. Btw, did you tough the idea of a potentiometer at the lever? (For example, in a rotary pump config, connected with a linear potentiometer 404 at the manual lever) that can be used for flow control. Regards. Heck

Bug report - overall, things are working very well. However, on 2 instances, the boiler over pressurized, causing the over pressure valve to open. I didn't get a look at the kPa on the display, but it must have been below the threshold which is set to 120. After shutting it off, then shutting it on, it went into safe mode. The machine had been on for for maybe 45 minutes or so and I had pulled a couple of shots. Another much less significant bug is that sometimes I have to restart the machine to get the brew lever to engage the pump. This is no big deal. I'm not sure if there is a way to get a log from those instances?

Hi, this is great! I’m ordering parts now but I’m in USA, do I need to order anything differently from your list above?

G'day Schematix - firstly great project! It's been a pleasure to watch your YouTube videos to understand how to adapt and install on a E61 HX type espresso machine.

I will be looking to implement your Smart Coffee project on my Rocket Giotto (ECM under the hood). Reading through some of the comments, you are looking to update the project to esp32, do you have a rough timeline on release? Happy to assist in beta testing.

The other question I have, instead of mounting a new screen and drilling a hole for the espresso mode button. I was thinking of removing the pressure gauge and mounting a 1.3" round screen. Its 50mm wide and has a built in button. This is an example - https://aliexpi.com/W8SV. Then use the hole on the boiler with a temperature probe to measure the boiler temp. Should look pretty neat.

I have been using the timed shot option because I found it hard to get accurate results with the flow meters I installed. My machine has a flow control on the grouphead and when i try to do any flow adjustment during a shot, the water volume in the shot is effected. I am wondering if using a high pressure flow meter would help at all. Any suggestions for flow meters?

been running Smart Coffee for a week and its great. there are a couple if things i would like to see:

instead of just the graphic when the brew lever is pulled in Espresso mode, i would like to see some of the brewing information. I am running it in volumetric mode, but i would like there to be a shot timer to aid in grind adjustment. i would actually prefer maybe just the screen you get when not in espresso mode that shows all of the machine data.

I have gotten the whole system wired up and I have run into a problem with the SSR turning on the Ulka pump. when i hard wire the pump, it works, so that is not the issue, if i connect the neutral with the 3 way valve it turns on, but not when its connected to its own relay. i purchased the 4 channel relay in the parts list and i have tried multiple channels and also switching the hot as well as the neutral. I did some searching and it seems like vibritory pumps can have issues when running on this sort of relay. I read that adding a RC snubber can fix the issue? Check out this link(disregarding his comment about the humm coming from his 3 way valve) https://electronics.stackexchange.com/questions/278144/controlling-ulka-pump-using-relay

I have a Vibiemme Domobar single boiler with NO heat exhange. In order to make steam I turn on the steam switch which brings the boiler water temp up to 100 celsius. How would this work or how can I achieve this with Smart Coffee?

Is it posible to add this switch?

Thanks in advance!

Any idea why the temp sensor would give read outs of -242 then 988? The connection is per instruction and I soldered for 3 wire probe.