General Discussion
A place to discuss electronics, projects & ideas
5Troubleshooting
Need help with something?
1Repairing
Need help repairing something?
2How To's
Share your projects with others
10
- General DiscussionHi 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 advanceLike
- How To'sSmart coffee 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: • Control the boiler pressure using programable PID or PWM logic • Check the boiler water level through the factory-fitted probe • Refill the boiler by activating the pump and refill valve • If a water reservoir tank is present, it can check the water level using a probe OR via a switch. If the reservoir is empty, the element and pump will be disabled until the reservoir is refilled In addition, the software can add extra features such as • OLED display that can show pressure, temperature, water tank level, mode, pump & element icons, and more in both metric or imperial units • Pre-infusion cycle what can be customized to pre-infuse the coffee grounds at low pressure before extracting the shot (activated when Espresso mode is ON) • Espresso Mode which can be customized to stop the pump after a programable amount of water is dispensed. • Flow meter which can keep track of how much water has been dispensed • Espresso timer which automatically stops the pump after a programmed amount of time • Water reservoir level can be measured using an ultrasonic sensor and printed on the display. No more manually checking to see if you need to refill the reservoir tank! • Pause a boiler refill from happening when an espresso shot is being made • Temp sensor which can be used to measure any temperature on the machine • Safe mode which can be programmed to shut down in the event the pressure and/or temperature exceed the programmed limits Buy smart coffee here Download a preview version of Smart Coffee software here (The preview version allows you to view the Setup and Guide pages before purchasing) Watch the video to learn more about smart coffee here Video Playlist for configuring Smart Coffee here Espresso Machine Compatibility: Smart Coffee should be compatible with most single boiler (aka heat exchange) machines that have the following hardware: • Water Pump • Solenoid valve (to refill boiler) • Heating element • Boiler water level probe • Brewing switch If your espresso machine uses a currently unsupported hardware configuration, you can submit a request below to have your hardware configuration supported with a future update. UPDATES to Smart Coffee: V2.0 • First Released Version V2.1 • Added the option to use temperature as the target for the boiler element control. • Added the option to disable pressure safety limits. • Added the option to disable the pressure transducer. • Renamed "TEMPERATURE_SAFETY_FEATURE_ENABLE" to "TEMPERATURE_SAFETY_LIMITS_ENABLE" v2.2 • Refined and optimized logic • Updated pressure reading units to display 0.0 resolution • Changed printed display value "Kpa" to "kPa" • Added multiple attempts to connect to max31865 temp sensor • Updated serial printing logic • Removed obsolete serial printing commands inside the brewing logic DOWNLOADS: • Download STL files to print the SH1107 display mount here • Download the wiring diagram here • Download a preview version of Smart Coffee software here (The preview version allows you to view the Setup and Guide pages before purchasing) WIRING DIAGRAM: Adafruit MAX31865 board configuration: https://learn.adafruit.com/adafruit-max31865-rtd-pt100-amplifier/rtd-wiring-config FAQs: Will there be updates for Smart Coffee? Yes, we’re brainstorming several ideas and features to add to smart coffee. My machine has a different hardware configuration, will Smart Coffee support it in the future? One of our goals is to have Smart Coffee be highly compatible with most espresso machines. If your espresso machine uses an unsupported hardware configuration, you can submit a request to have your hardware configuration supported with a future update. Do you offer technical support? No, we do not offer individuals technical support for installing Smart Coffee. Our videos, guides, information, and software are supplied for educational purposes only. Are there any warranties given or implied? No. Smart Coffee software is supplied for educational purposes only. Are future updates free to download if I purchase Smart Coffee? Yes, once you buy Smart Coffee software, future updates will be free to download. As the project evolves over time, there may be variants of Smart Coffee, for example, ‘Smart Coffee – Dual Boiler edition’ which may require a separate purchase. Hardware list: (affiliated links, thanks for your support) Pressure transducer: https://s.click.aliexpress.com/e/_DD26P6x • Input: 5V • Sensor output: 0.5 ~ 4.5V • Pressure range: 0 ~ 0.4Mpa (400Kpa) • Thread: G1/4 (aka ¼” BSPP) • (thread adapter may be required to fit different machines) ¼” BSP to G1/4 adapter: https://s.click.aliexpress.com/e/_DmjM9T5 Right angle adapter: https://s.click.aliexpress.com/e/_DCGZhH5 Arduino MEGA 2560 PRO: https://s.click.aliexpress.com/e/_DEqZP9t OLED display: https://s.click.aliexpress.com/e/_DlNwzh1 • OLED SH1107 display • Interface: I2C • Pixels: 128x128 • Input: 5V Ultrasonic Ranging Sensor: https://s.click.aliexpress.com/e/_DdEwlEb • Model: A02YY • Output signal: PWM • Input: 5V (Solid state relays with appropriate current and voltage ratings for the pump, refill valve, and element) 2 Channel SSR: https://s.click.aliexpress.com/e/_DEuadS3 • Control: 5V Low-level logic (aka GND pin to turn relay ON) • Load current: 2A • Load voltage: 250VAC 40A Solid state relay: https://s.click.aliexpress.com/e/_DkRF9Ij • Control: 3 ~ 32VDC • Load current: 40A • Load voltage: 24~480VAC MAX31865 temp sensor with probe: https://s.click.aliexpress.com/e/_DefQQLp Adafruit MAX31865 board configuration: https://learn.adafruit.com/adafruit-max31865-rtd-pt100-amplifier/rtd-wiring-config Small size flow meter: https://s.click.aliexpress.com/e/_DFDQ3vv • Model: USN-HS06P • 5 ~ 12V • 6mm OD • 30 ~ 150ml/min Medium size flow meter: https://s.click.aliexpress.com/e/_Dl8u7QT • Model: USN-HS06PS • 5V • 6mm OD • 0.1 ~ 1.5L/min (For a high-pressure flow meter, google search for “GICAR flowmeter” or similar) Chrome on/off Switch: https://s.click.aliexpress.com/e/_DdqG6h9 Micro USB panel mount: https://s.click.aliexpress.com/e/_DBQWf5h 5V PSU: https://s.click.aliexpress.com/e/_DBJgyX1 • Model: MeanWell - RS-15-5 • Output: 5VDC, 3A Miscellaneous: 2mm Clear acrylic sheet (for OLED display mount): https://s.click.aliexpress.com/e/_DDmUUlh (Display mount acrylic screen size: 2x38x50mm) Connectors: https://s.click.aliexpress.com/e/_DdGNokf (I used 2x 4pin connectors in my build, however this assorted pack comes in handy) Plastic enclosure: https://s.click.aliexpress.com/e/_DD9Nslv (Purchase an enclose that has sufficient space for the electronics you're using and fits inside your machine) Shielded multi-core cable: https://s.click.aliexpress.com/e/_DDXYKMf (I used 1meter of 28AWG, 10core shielded cable) Dupont crimping tool: https://s.click.aliexpress.com/e/_DkR40YX Rivet nut tool: https://s.click.aliexpress.com/e/_DE05vafLike
- RepairingI have a piece of equipment that needs to be removed, but because it has been installed for many years, many screws are rusted and cannot be removed. I have seen that Solary induction heater on the Internet, which is said to solve my problem. Can I use it? In addition, because there are many wires on the device, will it have an impact?Like
Please Read
Forum Rules:
You may not post obscene, rude, offensive or threatening comments on the forum.
Do not create a post for the sole purpose of advertising your business OR selling/promoting a product.
Failure to follow the rules Or be a decent human being, may lead to your account being suspended.
The Forum can be joined by anyone & anyone can publish/write a post in the forum.
By using the forum, you acknowledge Schematix is not responsible for what other people post inside the forum.
All information provided on Schematix.co.nz and the forum are intended for educational purposes ONLY.
If you attempt to recreate/replicate anything you’ve seen/read about, you’re doing so at your own risk!