Did you use Pogoprog or the micro USB to flash? Now we can see now my attraction to the espresso machine and hopefully easy enough modifications and tuning the PID. Therm: Therm is a open source PID temperature controller created by Protofusion. We stock a large selection of Gaggia Classic V1 RI8161-RI9303 replacement parts & accessories. To overcome these hurdles and create a solution that meets our temperature control needs, Protofusion has developed a tiny open-source PID controller called Therm. Reassemble the machine: Double check that all of the wires are hooked up, and then replace the top cover and the water funnel, along with the screws that were removed during disassembly. The ability to make good espresso is one of the most coveted skills in the coffee world. If you look at the cost of each item on the parts list, the total comes to somewhere around $60. The modifications I made are completely reverseable, although it would take a similar amount of effort to revert back to stock after making the changes. Notify me of follow-up comments by email. FILTERS KIT INCLUDED. Don’t know why it didn’t connect with me to do it like that last night. Read more. This technique is very tedious to execute correctly and is subject to variations in individual machines and environmental conditions. Matthew is a computer engineer who enjoys designing hardware for embedded control systems. High Temp Wire: Wire rated for high temperatures is a good idea for this modification because the inside of an espresso machine can get hot enough to melt standard wire insulation. The steam switch is set up to disable the solenoid when steam mode is selected, which means you can use the brew switch to run the pump and get hot water from the steam wand without making any modifications. Did you get your parts SMT manufactured or did you have to solder it on? Thermocouple: Thermocouples are used to precisely measure temperature. Send me an email at matthewreed64@gmail.com and we can work something out! This is a solid state relay (SSR) that is typically used for the PID kit brew function. £ 21 each Gaggia Classic 6-Pc Tune up Gasket Kit. A bit of thermal paste on the tip before installing is recommended, but not required, especially if there’s lots of thermal paste left from old switch. JavaScript appears to be disabled in your browser. I’m hoping to brew up something similar when time allows. Great Savings & Free Delivery / Collection on many items AU $22.35. Save gaggia classic parts to get e-mail alerts and updates on your eBay Feed. ALL RIGHTS RESERVED. 5. Because of this, many home baristas will learn to “temperature surf” by measuring the boiler temperature at various points in the heating cycle and tracking the time after the thermal cutoff switch turns off to hit their desired brew temperature. Firmware: http://hg.protofusion.org/therm-ng Therm runs on a 5V power supply, which doesn’t exist in the stock machine, so we’ll need to add that too. Gaggia Classic coffee machine parts. £ 44 each EF0097A - Gaggia Classic Steam Valve Horizontal mount. I am in the EU and the machine is made for use here. I chose wire with silicone insulation and a 200°C rating. Hey Zack! If you’re comfortable performing these steps, you should have no problem getting the controller up and running, otherwise, I would probably recommend using a commercially available kit to make these modifications. Anything obvious I’m doing wrong? This is the stainless steel vent tube, as supplied with our slim drip trays. Unfortunately, traditional consumer-grade espresso machines are not very good at keeping water temperature consistent. This seamless integration will preserve the existing machine interface and aesthetic while providing the benefits of precise and stable PID-controlled boiler temperatures. It has a white led not red like pictured.The kit works for 115 VAC and 240VAC. I’m interested. The remaining part of post describes my own experience of equipping Gaggia Classic coffee machine with PID controller. Are you looking for spare parts for your Gaggia coffee machine? They typically manage the boiler temperature with thermal cutoff switches, which have a large temperature range, switching off the heater when the temperature reaches the top of the range, and switching back on when it gets to the bottom of the range. But now, we want Therm to control the temperatures and not the cutoff switches. Replace steam cutoff switch (optional): If you opted to upgrade the steam thermal cutoff switch, you can swap that out now. MrShades Gaggia Classic PID Kit (1/32DIN) - Complete PID kit with full guide - £94 A bit of an update on my PID kit that Ive recently been working on. Thanks! Thanks so much Matthew! It's here, the video that every Gaggia Classic owner wants to see. One question, though I’m sure the answer will be obvious once I start the project: which steps exactly require soldering? I’m an analog person. Thanks for reaching out! That makes a ton of sense. Only 3 left. This isn’t strictly required, and there are plenty of other ways to create electrical connections, including splices, solder joints, and different connector styles. Really cool project! Since the SSR takes the place of the front panel steam switch in this circuit, we’ll want to connect the output directly to the wires we just unplugged from the front switch. Add wires (thinner wire is fine) to the SSR +/- input to connect to Therm. I’ve been using this machine with these modifications ever since I posted this article and haven’t made any changes to the PID system yet. This means the display is not visible during normal use, but using a “set it and leave it” approach allowed me to avoid cutting a hole in the machine for the display. We also want to remove the old thermal cutoff switch that was used to control the brew temperature. This is the starting point for the modifications we’ll make, and we’ll try to leave as much of the system as possible undisturbed. There are many commercial PID controllers available on the market, but they each have drawbacks such as size, cost, and customizability. Power Supply: The Therm PID temperature controller needs a 5V power supply, but the only power available in the stock machine is 120V AC. We only want to disconnect the side that goes to the heater coil, which is the side closer to the brew switch. This upgrade is completely optional as it doesn’t directly influence the PID control system, but it may be worth considering since you already have the machine open. Therm uses a thermocouple to measure temperature and has a digital output that can be paired with a solid state relay (SSR) to control heating elements or other thermal devices. Below is an updated schematic which shows all of the changes we want to make to the system. (Pseudo-HX Configuration) The how and why are a bit long, so for anyone just reading casually stick to the bold; the Gaggia Classic has very poor intra-shot temperature stability, but it can be brought to ~2°C relatively cheaply. I’ve sent you an email…. For the neutral connection, I spliced a wire with a connector into the neutral line going out to the power plug. You have come to the Gaggia UK Office. This item is a single replacement part or cable for our PID kits, if you have lost or damaged an original part or cable. Most of the options I can think of wouldn’t require any changes to the pid controller, but let me know if there’s something else you had in mind! His hobbies include photography, gardening, coffee, and anything DIY. You can find all the latest source code and hardware design files in the Protofusion repository! They come in all shapes and sizes for many different applications and can have a wide range of price points. Thanks David! Software or openware is another thing. We aren’t currently selling this controller, but it is all open source, which means the PCB design files can be downloaded, fabricated, and assembled, and the software can be downloaded, compiled, and flashed on the microcontroller. South Georgia and the South Sandwich Islands, Mods for post 2018 - Gaggia Classic Pro / Gaggia Classic 2019 espresso machines, Mods for pre 2018 - "Original" Gaggia Classic espresso machines, New - Gaggia Classic Pro/2019 PID kit - 1/32DIN single display, Original - Gaggia Classic PID kit - 1/32DIN single display, Gaggia Classic OPV spring mod kit - Standard version (just springs), Slim drip tray complete with long vent tube for Gaggia Classic, Magnetic slimline digital shot timer and coffee timer, Gaggia Classic 2019+ - RI9480 - Power switch mod, Gaggia Classic stainless steel long vent tube (6mm OD x 5mm ID x 158mm), Aluminium PID case -silver or black - clamshell design - 1/32DIN with cutouts and grommet, Gaggia Classic 2019 eco timer disable wire. Open up the machine: Remove the two screws along the back of the top cover and take off the cover, along with the water funnel. While not absolutely necessary, a dab of thermal paste will help to improve the accuracy and response time of the temperature measurements. STAINLESS STEEL CUP PLATE. If the brand or source is questionable, I would recommend derating the current by a factor of 2 or 3 and going for a model rated for 25-40A just to be safe. I’m sure I can resource what is needed here in Germany. You could just as easily wire the therm module to sit on top of the machine or cut a hole to mount the display in. Wire up the power supply and connect the AC hot/neutral to the machine, leaving 5V wires ready to connect to Therm. The ability to make good espresso is one of the most coveted skills in the coffee world. I’m currently working on an open source espresso machine project (https://hackaday.io/project/162176-open-source-espresso-machine) and this would be perfect to implement! How is the hardware setup so that you can connect the 120V Steam switch to the Therm? We carry out service and repairs for all Gaggia and Saeco traditional, automatic and capsule/pod coffee machines including UK collection, fault finding, repair and re-delivery to your home, … Any chance you would consider fabbing up a therm again? Whilst Im keeping the current kit alive and… Buy Gaggia and get the best deals at the lowest prices on eBay! I came across a chap by the name of Adrian on UK Coffee Forums - he's put together a brew+steam PID kit for the Classic, available at the very, very reasonable price of £89 incl UK shipping. Upgrading to a 155°C cutoff should significantly improve the available steam volume. I had a couple questions on your process since I’m in the same boat; starting from scratch. While the first espresso machine was made in France in the early 1800s, and then the first automatic espresso machine was invented by Italian food Chemist Ernesto Illy, it was a chap by the name of Achille Gaggia, who owned a Cafe’ in Milan, who gave birth to modern espresso. Are you looking for spare parts for your Gaggia coffee machine? Start to finish, it took me about 2 hours to complete this project. I would imagine the whole thing could be achieved in an afternoon by anyone comfortable around tools and with basic soldering experience. The Sensor with the PID kit can measure temperatures to 0.1 of a degree. Plug the male spades into the female connectors from the front panel switch. I will try to rebuild the therm on myself. If you would like to collaborate or even just linking me to the design files of the therm PID would be a huge help! A basic USB phone charger would also work well if you have an old one laying around. New Product: CANable Pro – Isolated USB to CAN Adapter, https://hackaday.io/project/162176-open-source-espresso-machine. Via the protofusion blog, Matthew Reed writes about hacking a Gaggia Classic espresso maker to make more consistent shots:. The steam cutoff is found on the top of the boiler, and looks just like the brew switch. Fortunately, several popular low-cost 3D printers use a thermocouple with an M4 thread that perfectly matches the thread of the thermal cutoff switch we are removing, making it easy to find and a perfect drop in replacement for this modification. The best entry-level espresso machine just got better! regards, JT. For this project, we will use Therm to control the boiler temperature of the Gaggia Classic espresso machine and configure the software to read in the state of the switches on the front of the machine to select between brew and steam temperatures. However, flashing the board with texane/stlink fails due to the binary size exceeding the 64K Flash memory of the STM32F302K8U6 microcontroller. Hey Joe, that could definitely be possible. Take a look at the PID kits, OPV kits and other products relevant to your machine by selecting your Gaggia Classic model below Featured categories Mods for post 2018 - Gaggia Classic Pro / Gaggia Classic 2019 espresso machines Make sure you reconnect the wires once the new device is installed. I’m excited to hear that you took the plunge to make your own, even without much previous experience – that’s the best way to learn imo! Well it has arrived and it only took a week from the US. Next, we need a way to tell Therm whether the machine is in brew mode or steam mode, so it can set the temperature setpoint accordingly. After a lot of googling and troubleshooting I managed to order and fabricate the PCB, install the Arm GNU toolchain, open the source files into Eclipse and compile the binary firmware file. The first addition to the system is a Therm module to act as the new brains of the machine. Disconnect steam switch on front panel, Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window). Some Key Features on the GAGGIA Classic II. I’d like my Classic GAGGIA machine to work as well as the one described to enjoy the benefits of consistent quality espresso at home. Machine, the only soldering in this case, we want to make more consistent shots.! System gaggia classic pid kit uk a Therm again reliable results not want to disconnect the spade connectors plugged into,! And heat during brew to know act as the new device is installed hole and you see! Stock and i can remember, the video that every Gaggia Classic steam Valve Horizontal mount them. 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