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Share your projects with others
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Welcome to our group Schematix Group! A space for us to connect and share with each other. Start by posting your thoughts, sharing media, or creating a poll.
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Fluid-o-Tech FG213 Gear Pump with Mean Well SDR-120-24 for Preinfusion Control?
Hey folks,
I’ve been diving into this awesome project and wondering if a Fluid-o-Tech FG213 gear pump paired with a Mean Well SDR-120-24 (24V, 5A, 120W) fits well. Can it be controlled from the board for preinfusion and other settings? Also, I’m curious about swapping the standard lever switch for a linear potentiometer: BI Model 404 https://eu.mouser.com/ProductDetail/BI-Technologies-TT-Electronics/404R10KL1.0?qs=LUfMuE0iDorszXH677fGaw%3D%3D to manually adjust pressure from the gear pump by lifting the lever, similar to Tate Mazer’s technique in this video (https://youtu.be/JlgXGrb4lVE?si=x4sSAlxf-_qxXNhM&t=651). Has anyone tried this or something close? Thoughts on compatibility and manual pressure control? Thanks!
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THE OTHER ESPRESSO KITCHEN INTEGRATION
HELLO GUYS!
My name is Dani. I am a mechanical engineer, product designer and espresso lover and I am really glad that I have found this amazing source of knowledge and you guys - you are really doing exceptional work.
Since I am not so familiar with all the electrical stuff and micro controllers, this platform is a great value for me and
anyone who wants to explore new things with espresso machines.
I want to create my own espresso machine - in its core, not to be a new espresso machine, but to fit my needs
in our family kitchen. We have two cabinet areas in wall which are not so deep to fit a regular EM.
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Rotary pump compatibility
Hi! I found this project to be really exciting! Curious about the suitability of using the latest smart coffee gear on an espresso machine with a Rotary pump - any thoughts, experiences or recommendations? Contrary to a vibration pump, Rotary pumps require quite some energy to get started, and therefore might not be suitable for any pressure profiling, unless doing it steplessly, regulating rpms, or...? (It's a 10+ years Rocket Cellini Evoluzione R)
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marshall
23 feb 2025
I can think of three approaches to controlling flow with a rotary pump machine. The first is to control the flow of electricity to the motor which drives the pump. I don’t know if this is possible or not. I read the data sheet from Fluid-o-tech and it is not clear to me. We could ask them.
The second is to use a needle valve or other means of flow restriction. This is what the mechanical flow control devices do. I can think of two ways. In the first approach, we use a 3-way solenoid to create two paths of brew water. The first path is at full pressure, and the second path meets with flow restriction. So now we can have preinfusion, restricted flow, and full flow. The restricted flow path could flow through a manually adjustable needle valve, so you can tweak the restriction. Now the electronics can pull shots with preinfusion, then full pressure, then lower pressure. Or whatever.
Then the other approach is to implement an electronically controllable flow restrictor, but I’m not sure what device can be used.
Of these approaches, I like the 3-way solenoid approach the best. It requires some reworking of the machine, but it shouldn’t be too extensive.
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Smart - Coffee: Programmable Espresso Machine Controller
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Tucker Bradford
30 jun 2025
I made a prototyping box, just to mount it in while I was wiring everything up. It helped protect it from possible shorts. I would be happy to share that, but it would be much better to wait until I have the final design ready (if you don't mind waiting a few weeks).
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Dual boiler controller ( Rocket r58 )
Hi I'm very excited for the dual boiler version coming out, I'm just curious to when you thi know it will be available?
Thanks in advance
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Schematix
12 mar 2024
Hi Peter, Currently I'm working on the code. The new ESP32 and code is running the machine fine however the code needs to be optimized to be user-friendly. I've experienced issues storing several values in the NVS of the esp32 which is necessary to make fine-tuning fast & simple for the user. It's difficult to say for certain, however, I'd like to think the issues I'm facing can be ironed out within 2~4 weeks.
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Smart - Coffee: Arduino Mega version
PLEASE NOTE:
The latest version of Smart-Coffee can be found here: https://www.schematix.co.nz/forum/how-to-s/smart-coffee-pcb-v1-4
Smart - Coffee: Arduino Mega Version is highly customizable software that runs on an Arduino or similar microcontroller, to control the various functions of an espresso machine.
The software can be configured to replace the factory controller functions such as:
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Well, I know about Modbar, but these are crazy expensive. There is a cheaper version from Australia, espressoDECK., but it does not look as good - therefor I am aiming for a custom solution.
Rg. the piping, I am aware about that, it surely needs some heat protection etc., right now I am exploring just the idea and how it could look within this given space - must not be the e61 at the end... depends which machine I am gonna use as a starting point...
Mostly I am interested to learn how I could combine your skills and parts, software into a custom
result I am looking for. If you need some 3D CAD assist, let me know... glad to help if I can!