You can buy them at Ace hardware for about twenty five cents each. I think this would be the most important parameter of the build, obtaining the correct temp of the water. For the sake of piece of mind, I have ordered last night a K type thermocouple in order to replace the RTD P100 and close the open loop in my head about PID type and sensor. Good idea Chris. Youre probably fine with either one. So the above instructions might not apply to the UK, I have the GC2019 but the live connection was the top right on the power switch when switched on, bottom left caused the PID to flicker and not work as expected, I fixed my issue but now the PID readout is 103 Dec but the water is 80 degrees, didnt think it would be off by this much. Set the cover and screws aside. My theory at the moment would be that due to the PID control the heater is sometimes on at higher temperatures. The same complexity applies to pressure control. You can use the same 18 gauge wire between the heating element and the SSR. 2. An extended de-bugging solved the problem: the PID 12v circuit output was reversed, so changing + to solved the problem. I love the Lego enclosure idea. In this video I'll install a PID unit on my Gaggia Classic Pro. I am going into speculation mode here I wonder if your Gaggia came with the steam and brew thermostat positions reversed? add to list. That being said, the original brew thermostat is supposed to be 107C, so could perhaps reach even higher temperatures? Mods for post 2018 - Gaggia Classic Pro / Gaggia Classic 2019 espresso machines View products Mods for pre 2018 - "Original" Gaggia Classic espresso machines View products sign up Thermocouple: J,S,K,E,Wre3 ~ Wre25 The Gaggia Classic has a max power consumption of more than 1400W, which can easily burn up a cheap SSR. Leave as much of the thermal grease in place as possible. I hope you enjoy your upgraded GC as much as I do mine! Curtis LMWDP #551 "Taste every shot before adding milk!" Henry_k #5 : by Henry_k February 10th, 2021, 12:35 pm I see no advantage of controling steam temp by PID - if it is 145C or 140C - not a big deal. You will probably want to drill pilot holes as well to prevent cracking the plastic. The image I used is wrong and confusing, and I have now updated it. This resulted in the PID not powering up even though the machine did. Neutral is the return path for the hot or load wire. Hi, thanks for the articely, it was great help to do the initial steps. Unfortunately, no, you cant use the factory sensor. I found that carefully pushing the boiler up gives better access to the thermostat, either from above, or by reaching up from below. The 12 volt wires from the SSR connect to terminals 4 and 5. I have changed the default value of the SL parameter to work with the RTD sensor (K thermocouple was default). So this suggests that the machine is getting much hotter and I reduced the the set point to 95deg from your recommendation of 103degC. Shades uses an XMT7100 modified to run two SSRs: a DA for the brew temp and an AA for the steam temp. I hope thats ok. 2. For the Classic Pro, this requires either shortening the spring in the OPV valve through trial and error, or ordering a spring kit from Mr. That is confusing. Wire colors and positions seem to vary. Most guides recommend connecting the SSR to the Gaggias (metal) body with some thermal paste, and this mount then serves as a heat sink. Gaggia RI9380/51 Classic Pro Espresso Machine, 1400ml, Industrial Grey. I am not surprised that the steam kit made little difference. Warning! Also some pids come with a built in relay. PWM dimmer for preinfusion The most I can say is these work for me, and are probably not optimum. 39. r/espresso 24 days ago. Most likely will work on the Silvia as well. Net Weight: about 150g I bought the PiD from Amazon referenced in a comment above and its working fine. (for a reasonable fee of course). Or do you think the same set will work with QB-T7100? Its actually reading too high.. 98 deg against 92deg measured by both my oven thermometers. Hard to say how long it took because I was doing other things as well (dimmer switch, boiler pressure gauge, boiler rebuild, etc.) Ive followed these instructions and installed the mod using the REX-C100, SSR, K-type thermocouple and brass adapter linked in Chris excellent writeup (Thank you Chris). Trim, terminate and connect the wires you routed out the back of the Classic to the PID. Attach the solid state relay to the inside back wall of the Classic, using a small bolt and nut. In your paragraph for connecting the thermocouple, you write thermocouple connects to terminals 6 and 7. If nothing happens, download Xcode and try again. Im sorry about that, Eric. I will monitor it over the next few days, but if the coffee takes good, and the only thing I notice is the warmer cup tray, Ill be fine with that, better in fact! Hi Nish. Hi Chris, I actually ended up getting the one you recommended. Connect the +/- leads from the PID to the SSR input terminals, paying attention to the polarity as these are DC. 3-Connect the other cable to the terminal on the on off switch, which is on top of or below the Live cable. Shall I change the P,I and D parameters manually and what is your suggestion to start with? The code is reasonably well commented internally and variables are named such that it should be easy to find values you may need to change for your specific implementation, such as which pins have buttons assigned to them or the output pin for the SSR. Did you have any problems or stumbled upon anything unexpected? Applications Run two 12 volt wires from the + and terminals of the solid state relay and out the back of the Classic, again using the same slot. Hi , I followed the instructions but the PID starts up with some number and it doesnt look normal , LCD just keep blinking some numbers the goes of for a few seconds the I get some numbers for half a second, itso quick I cant tell what is displaying, could I have got the power wiring wrong or if the cable are higher AWG would it causes issue? New - Gaggia Classic Pro/2019 PID kit - 1/32DIN single display $140.81 Shades of Coffee Original - Gaggia Classic PID kit - 1/32DIN single display $140.81 Shades of Coffee TopBox PID Mounting System $36.17 Shades of Coffee Gaggia Classic - Flow Control Dimmer kit $27.13 sign up ABOUT US CONTACT US DELIVERY TERMS YOUR PRIVACY REFUND POLICY FAQs I was like WTF. 1 / 9. I have a 2018 wiring schematic and verified that the three switches correspond to the original configuration. ESP32 IO. Somebody else (Andrue) had also pointed this error out. You could simulate pre infusion by briefly running the pump. and our Most likely they will have the same connector types as the REX-C100, but its always possible that you will need different connectors depending on what you end up ordering. Most assembly guides recommend using some thermal paste between the SSR and the Classic to ensure that any heat from the SSR is dumped to the chassis. This gives the machine a whole new level of consistency, and gives you fine control over brew temperature. One last question: Auber and Mr Shades are calling their sensors PT100 while mine is K type thermocouple. Hi all, I recently bought a Gaggia Milady secondhand. I stumbled onto this before I actually had my Gaggia in hand and went about ordering all the parts. The PID actually only attempts to achieve one temperature (brew temp), the second SSR bastardises a secondary output in order to achieve the second temperature (steam temp). If you really want to avoid the heating element switching while youre pulling a shot, you can blip the steam switch for a few seconds before brewing and that will bring the boiler temperature up a few degrees. Ill be using a xmt7100 (modified) for two SRRs and also tweaked for 12v out for led mod any help would be appreciated. I can do a more detailed writeup of what Ive done if anyone feels like helping me find out whats not working properly! If you do this, consider counter-sinking the magnet so that it is flush with the outisde of the box. Chris, i read some comments here about steam. Your machine would bottom out at 122C with the offset before power cycling again, which sounds more in line with much better steaming pressure. Hi Murat. Test that everything is working before closing the machine back up. Based on several comments, the wiring varies between units, even though they are the same model. Terrific write-up thank you for posting it! I start to run the steam at about 130 in the heating cycle on my setup. Publicado el sbado, 1 de abril de 2023 . Do you think that REX-C100FK02-V*EN (designed for K-type thermocouple) is compatible with RTD (PT100) and is not going to create long-term problems with the machine/setup? Plug in a mains-rated wire connected to a piggyback spade connector, and then plug the original neutral cable into the piggyback. Gaggia Classic - Short Circuit. Look at Gaggia classic PID install instructions. Hello Chris, I used lamp cord for this. Use the other probe to check the other two wires coming from the power socket. Connect one meter probe to ground (the GC chassis should always be grounded, otherwise connect to the green wire coming from the power socket at the back). Gaggia Classic & Classic Pro scales housing (BOM and models) Base Functionality Housings. Print services. https://www.reddit.com/r/gaggiaclassic/comments/kmm09a/diy_pid_for_my_gaggia_classic/, https://www.aliexpress.com/item/32811149954.html?spm=a2g0s.9042311.0.0.49554c4dRzoluB, https://www.amazon.com/gp/product/B00YBMRAH4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1, https://www.amazon.com/gp/product/B07Y33RZ8F/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1, https://www.amazon.com/gp/product/B07QJW9FKS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1, M4 threaded K-type thermocouple (widely available from Amazon, etc as a replacement part for 3D printers), 128x64 I2C OLED screen (substitute any screen you prefer but you'll need to update the code for your specific unit). Please The thermocouple should be snug but not too tight as the threads are not super robust. gaggia_classic_pro_pid. I went with an insulated PT100. Ive attached an album with my wiring below; Ive literally had an engineer look at it and The Gaggia is 100% at its original state except for the power taps on the neutral at the plug, the live on the brew switch, and the thermocouple to SSR wiring: https://imgur.com/a/rc4xtfz. Was hoping to actually just install one of these: https://www.ebay.com.au/itm/264849127538 Thank you for your time. Possibly not the optimal position but was really easy to install and I knew Id only be getting a relative indicative temperature anyway. Note: I fully tested the PID, SSR and thermocouple on the workbench before final installation. Do you observe the same temperature ranges? Please be sensible and install a grommet anyway! Well I ordered the wrong thread. The PID switches the power to the boiler heating element on and off a lot more frequently than the original mechanical thermostat. Is this just a matter of adjusting the offset of the PID? Is P=620 maybe an overkill, as I havent seen such a big value at other places? Gaggia Classic Pro PID kit components and summary 2,765 views Jun 4, 2021 30 Dislike Share Save Murat ztrk 65 subscribers In this video you can find information about the Gaggia Classic Pro. Everything else (Auber and Mr Shades) includes an M4 thread on their pt100. 295.00 . If you had to recommend a single display PID, which one would you steer me to? (Video) PID on Gaggia Classic Pro - Game changer to budget espresso brewing at home Here are the installation steps: Unplug the Gaggia Classic. Converting CUSIP-6, CUSIP-8 and CUSIP-9 to ISIN in PHP, How to automatically block WordPress bot spam without a plugin, which I ordered as an inexpensive kit with a thermocouple and a solid state relay, PID installation in Gaggia Classic causing shortcircuits ColorMag, https://wiki.wholelattelove.com/File:GAGGIA_CLASSIC_2019_Wiring_Schematic.pdf, https://www.youtube.com/watch?v=UETVv0qgz-w, https://coffeeforums.co.uk/topic/53319-what-temp-offset-are-you-using-with-your-pid/, https://diy.stackexchange.com/questions/195229/in-a-light-switch-how-can-i-tell-if-the-black-wire-is-really-hot-and-the-white, https://www.reddit.com/r/espresso/comments/owpfe7/i_made_a_lego_enclosure_for_rex_c100_pid/, https://www.amazon.com/gp/product/B00LODGP2E/ref=ppx_yo_dt_b_asin_image_o05_s00?ie=UTF8&psc=1, https://www.thingiverse.com/thing:4243840, https://www.thingiverse.com/thing:4938828, https://www.reddit.com/r/gaggiaclassic/comments/l5tfcj/mr_shades_pid_installed_decided_to_mount_inside, https://calbryant.uk/blog/well-integrated-pid-temperature-control-of-a-gaggia-classic-espresso-machine/#better-temperature-regulation, https://www.vertex-qis.co.uk/Manuals/PT100_con.pdf, https://photos.app.goo.gl/8yPwJcEPDi1c5tfY7, https://photos.app.goo.gl/Xp37S3o3y6bqqrEk8, https://www.shadesofcoffee.co.uk/post-2018/gaggia-classic-2019ri9480power-switch-mod, Barista Tools that are Worth their Weight in Gold. 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