Being my first SEPIC design, I invested a lot of time reading up on their theory and design. Unlike the more mainstream topologies information is a bit fragmented, so it took a while to assemble what I considered a thorough design model. ...
Okay, I finally got this thing built and completed a preliminary evaluation. The Kicad, MPLAB projects, and updated design workbook are posted in the files section but don't rush to build it. Specs: Input voltage: 10 - 80 voltsInput current: nominal...
If anyone has experiences with electric bikes of any power, please share how much this wattage helps. How much power will be enough to help smooth out the hills for a long-distance biker? How much is good for start/stop of the city? Any input is appreciated....
It was about time i revisited this project.The boost converter i had initially was a beefy "600W" part that seemed like a good idea back then but only runs good at around 17V+. No chance at 12V to get full output power.So i got a new "250W" one that...
Looks like the project has been getting some attention lately, more by others than by me... I've been busy with this insane FPGA contract project as well as job hunting/job finding/prepping to move to the new job 2300 miles away. I probably won't have...
The LEDs are ordered. Its looking like $140 for a 900w ~20,000 lumen array. That price includes: 100x 650-660nm Deep Red LEDs with pcb 100x 610-630nm Red LEDs with pcb 50x 460-465nm Blue LEDs with pcb 50x 445-455nm Royal Blue LEDs with PCB 6x 250w power...
Had a motor issue with our main auger motor, previously a geared DC motor. It turns out that torque ratings for DC gear motors are for peak load only, and not continuous...and that the continuous load is only about 1/10th of the peak (so much for a 3:1...
Finally, CNC millling, laser cutting, and multi-material extrusion, have all been done with this machine. However, the tool platforms obstruct a bit too much of the build area when mounted simultaneously. Check out MightyTool, the compact multi-tool...
Finally getting back to this project after quite an absence. Currently working on getting the design of the 2kV power chain completed. Also taking the time to learn KiCad. A screen shot of the PFC board is included below. New PFC design boasts 400V @...
I built a quick looking enclosure for the sprayer out of a plastic storage bin that I had laying around so now I can start to test with paints, and not have it make a huge mess. I ran a test today with the following:Setup:Sprayer Setup4 nozzles approx....
A few days before I took the machine to MRRF2017 this past weekend I slapped together a rotating drum assembly. I've got a whole two and a half days in the thing. Not surprisingly, I don't like it. Lol.So far I've mostly made unwoven mats. But for my...
Duh-cisions, Duh-cisions... Still standing at the crossroads of whether I want the case to remain a mostly unbroken envelope, and only have hookups accessible when it's open, OR carve holes for everything, and potentially have a structurally comprimised...
Slowly sorting through the parts now! The eBay kit came with a whole range of fun toys to play with: Throttle potentiometerHeadlight/horn unitTwo brakes with electrical switch output (for brake lights and motor braking)24V DC motor24V DC-DC motor controller...
(I don't know how to edit project logs or delete them)Slowly sorting through the parts now! The eBay kit came with a whole range of fun toys to play with: Throttle potentiometerHeadlight/horn unitTwo brakes with electrical switch output (for brake lights...