A project log for Upgrading a Wilfa coffee grinder

Adding custom grinding presets to a Wilfa grinder, presented on a small oled display

bjarkethomsen1bjarkethomsen1 07/25/2017 at 09:292 Comments

First step was to open the up the grinder and inspect the inner workings. Below is a picture of all the parts:

Disassembled grinderGrinding mechanism is seen left in the middle. The black wire running around on the part is connected to different safety switches.

The PCB controlling the timing and control of the motor is shown below. The motor is controlled using a triac and an 8-bit microcontroller with a potentiometer and a push button as input. 

PCB Controller board for the grinder

As of now the plan is to completely replace the controller board with my own components. The task is to make it compact enough to implement it into the machine. Next up is to make a mockup of the control system. 


jameshowlin wrote 05/25/2020 at 12:50 point

hey, how did you dissemble the machine? The grinding mechanism on mine isn’t working and I want to take it apart and clean it out. I’ve removed all the screws but the base doesn’t separate from the body easily. Did you force the base?

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firepoker347 wrote 06/10/2020 at 15:08 point

Hey, I made this account just so I could show you this:

That link is to a disassembly video of basically the same grinder but under the Breville brand and possibly with some different internals. Disassembly should be exactly the same regardless of if you have the Wilfa CGWS-130B or Wlifa WSCG-2.

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