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Depressurizing the EC155 Portafilter
The DeLonghi EC155 is a fairly well-built consumer pump espresso machine. It ships with a pressurized portafilter of a non-standard diameter, so finding a non-pressurized replacement is challenging....
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Delonghi EC155 Resources
A few people have asked some questions about the EC155 tamper size, replacement frothing wands, etc. I’ll keep updating this page with answers to common questions.Tamper SizeThe EC155 uses a 52mm...
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EC155 PID with Arduino
This is a build log of my PID modification to my DeLonghi EC155 espresso machine. Currently, the machine uses an Arduino to drive a solid-state relay controlling the heating coil. The Arduino displays...
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ZonCoffee .2 Released
ZonCoffee is a full-featured PID controller package for Arduino, customized for use with espresso machines. ZonCoffee is written in Processing/Wiring, and includes some code from Tim Hirzel‘s BBCC...
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ZonCoffee Hardware
The Eagle schematic for ZonCoffee is included after the break. Note that this schematic still has a few quirks, but it should be accurate to the best of my knowledge. I will post the Eagle project once...
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ZonCoffee PCB
The ZonCoffee espresso PID controller board has been fabbed!The silkscreen on the board was a bit messed up; both the names layer and my text layers were screened on the board. Nevertheless, the board...
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ZonCoffee v3 PCB
The first prototype ZonCoffee v3 boards have arrived and are nearly up and running. I’m currently porting the code over to Arduino 1.0, as this board uses the Arduino Leonardo bootloader. Read on past...
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Gaggia Classic Disassembly and Cleaning
I recently purchased a used Gaggia Classic machine on Amazon. After realizing that it was not as “lightly used” as the seller denoted, I took apart the entire machine to clean it up. I’ve written this...
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Gaggia Classic Seamless PID Upgrade
The ability to make good espresso is one of the most coveted skills in the coffee world. The rich body and complex flavor profile of a well-made shot brings the beans to life with a depth that other...
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