Fortunately I came across this great Hackaday page by Patrick! https://hackaday.io/project/9461-lifepo4weredpi He was nice enough to answer questions and help me with my design. My previous 2 layouts were failures, shutting down after only 4A! ...
Notes: The base diameter of the shade is 2.5" OD, and the inner cutout circle is 1.5" diameter. If that's different that what your particular lamp needs, then of course this shade will not work for you without modification. My original shades had ventilation...
Ladies, if you joined HackaDay and learned to sew like a man, you wouldnt have to put up with that nonsense. It isnt a challenge, its just a statement of fact. The companies that make these things are run by men, and designers these days are predominantly...
This is a dust separator. We make it using two buckets : -one for the cyclone part, that we modify to add holes and parts,-one for the dust bin, that is unmodified.The idea is to reduce the amount of labor required to make a functionnal and sturdy cyclone.To...
Scenario You were all sleeping calmly in your private jet, going from Japan to the USA.When the commander came and screamed out : " ONE OF OUR REACTOR IS DEAD !! DROP ANYTHING YOU CAN OR WE ARE GOING TO CRASH !! " But at this moment the reactor number...
All the circuits I am doing for this project are based on one fundamental unit logic gate: DTL invertor/NAND (depending on a number of inputs. Here is the schematic for 2-input NAND gate: One can make arbitrary number of inputs (within reason) by just...
Requirements Loss of main power should trigger the RPi to shutdown.Return of main power should boot the RPi.Power-up should wait until caps are sufficiently charged so RPi can boot cleanly.Wait for RPi to shut down before removing power (to enable...
Long story long:Last year I got a new laptop that ticked all the boxes for me at the time. Great 1080p screen with touch, long battery life, very portable and enough power to do a fair bit of programming. I was very happy with it until one dreaded morning...
The board is fairly simple. The IDT7130 does all the work. The only decoding needed is to generate an I/O select on each side. This is done by the 74HCT138 and 74HCT11 allowing a choice of addresses of the format 1X1XX1NN, which is a bit quirky but happened...
I have a separate project which is a TRS-80 Model I emulator. Back in the day, there was a voice synthesizer for it. I have been meaning to add that emulation, and was recently spurred into action by another hackadayer [Michael Wessel] who...
My backyard furnace and crucible are short of being able to melt copper. So that got me thinking about other ways I can move copper around. I started checking out electroplating and found the electroforming jewelry community who is happy to...
This is one of those projects that always gets pushed out of the table, to make room for the new one. I hope that I will find some time to complete this project one day, or just scrap it and move on. Basically, it's a lamp, or a lantern? Anyway,...
When finished, device will be fully functional mobile music player, inspired by the media players from first decade of XXI century, mainly an iPod. As you probably already figured it out, name of the project is a pun - you read "yPod" like "why pod"...
While I'm tying up old projects, here's another quickie which is a mashup of previous projects: #8042 clock, 8048 board, and #Inch digits. The clipboard is A5 size from an office supplies store. I've used these clipboards before in #TTL binary clock....
Recently I am renovating my room and I start looking into IoT / smart home devices. However, I am not the kind of person that willing to handle complex setup process and linking multiple device to a bunch of hubs just to make them turn on a light or...