TOOLS OF THE TRADE
Slow percolation coffee brewer
Inspired by the South Indian Filter, this brewer produces coffee that is rich, syrupy and incredibly sweet with a velvety mouthfeel.
FOR THE NERDS
Depth vs diameter of espresso puck
The relationship between depth and diameter of your espresso puck - by Lance Hedrick
FROM THE WEB
DIY espresso set up
Do not miss the comment from the OP on this reddit thread for how the thing is built -
So the boiler/group and the pump I took off a gevi no name machine I bought used on eBay for $20. The frame is built from 20x20mm aluminum extrusions. As far as sensors go, I used the cheapest thermocouple off Amazon and a 300 psi pressure sensor that I have teed off of the main pump line. The tubing is flex pressure replacement tubes from Delonghi but then the tops are cut off and use push to connect fittings instead so they can be easily removed. This works because the boiler is the group so no hot piping needed. The whole thing is controlled by an arduino uno that interfaces with 2 relays as well as the sensors, the rotary knob and the oled screen. It has all the hardware to do pressure profiling, shot timers, temperature profiles etc. I just need to sit down and actually program it lmao.