Bill of Materials – PID
Item | Type | Priority | Comments | Price (estimated - USD/US) | Aliexpress | Amazon (US) | Amazon (Europe) | Amazon (Brazil) | Mercado Livre (Brazil) | |
| PID REX C100 (REX-C100FK02-V * AN or REX-C100FK02-V * DN) | Component | Needed (this or XMT 7100) | Cheaper, the set comes with SSR (it is possible to use the thermocouple but I recommend to buy another model). For other details, check the comments about the XMT 7100 below. Check the spec: the models linked are FK02, not FK07. | 9.00 | |||||
 | PID XMT 7100 | Component | Needed (this or Rex C100) | Some people prefer this design, the smaller size. However, you need to input a code even to change the target temperature. With Rex C100, you just press a button, and can see the target and current temperature, but it's a bigger device. | 40.00 | |||||
| SSR | Component | Needed (except if you buy the PID kit above) | Pay attention to the spec: 40A, 24-380 VAC, 3-32 VDC | 4.00 | |||||
| Termocouple type K (hole washer model) | Component | Needed | You can also buy the PT100, but this is good enough. The reason for this model is that it's easier to fit under the thermostat that you will bypass.
| 2.00 | |||||
| Termocouple type K (M4 model for Gaggia Classic) | Component | Needed | M4 for Gaggia Classic | 3.00 | |||||
| Piggyback connectors 6.3 mm | Component | Recommended | 1.00-9.00 | ||||||
| Wires | Component | Needed | Recommend at least AWG16 which is adequate for up to 13 Amp | 13.00 (4 colors, 5 meters each) | |||||
 | Wago Connector | Component | Recommended | Be careful with similar / counterfeits | 6.00 (pack with 10) | |||||
| Connectors kit (without piggyback) | Component | Recommended | 8.00 | ||||||
| Thermal Compound Paste | Consumable | Highly recommended | There are cheaper versions, but this one has a higher heat transfer capacity. | 7.00 | |||||
| Thermometer | Tool | Optional | Useful to measure the temperature in the puck which tends to be 10-15 degrees below the boiler. If you don't want to buy, I recommend to adjust the offset to -12 in your PID. | 5.00 | |||||
 | Thermometer with Farenheit unit | Tool | Optional | Useful to measure the temperature in the puck which tends to be 10-15 degrees below the boiler. If you don't want to buy, I recommend to adjust the offset to -12 in your PID. | Circa 17 USD | |||||
| Crimper and Cable Cutter (Model Pro) | Tool | Optional | 10.00 | ||||||
| Multimeter | Tool | Needed | 8.00 | ||||||
| Multibits toolkit | Tool | Optional | 20.00 | ||||||
| Aluminium Enclosure for XMT 7100 | Component | Optional | You can use a 3d printed version. There are enclosures for PID, Dimmer and Pressure gauge integrated for Gaggias and I will design one for Rancilio SIlvia and make it available on https://makerworld.com/en/@espressohackers | 10.00 |