The Blog of Nick Poole
Assuming Control My previous post left off with the oxygen concentrator mechanically complete. All it needed was some electronics to control the solenoid valves. The PSA cycle is so simple that you could easily implement the entire controller in ladder logic on a PLC, or even in discrete timers. That said, I do PCB layout and a lot of Arduino programming for a living so I chose to build my own…
Running out of O2 Earlier this year, I was working on an experimental tube when I ran out of oxygen for my torch. Usually this is just kind of annoying, since I work with borosilicate glass there’s no harm in losing my hot flame, I just give it a light annealing pass with my MAPP gas torch and come back to it later. This time, however, I was in the middle of the pinch. The pinch is where the base…
After my presentation at Hackaday Superconference 2022 I was asked by my friend David to write a piece for Make: Magazine. I originally wrote the article around the diode tube that I presented at Supercon. However, because I had built that tube hastily in the days before the conference, I didn’t have a lot of good photos of the process. I decided the best thing to do was to make another tube…