New layout for the #eReaderHat except it's not a hat form factor but a #CM4 carrier board. More details on the layout on the @hackaday project page

https://hackaday.io/project/192366-floss-book-serving-system/log/222419-compute-module-4-carrier-board-layout

#electronics #hardware #printedcircuitboard

DIY Laser For Ablating Metal - For those who wish to go beyond through-hole construction on perfboard for their c... - https://hackaday.com/2023/07/17/diy-laser-for-ablating-metal/ #printedcircuitboard #circuitboard #laserhacks #bluelaser #ablation #copper #laser #grbl #cnc #pcb

Blinky Business Card Plays Snake and Connect Four https://hackaday.com/2023/01/16/blinky-business-card-plays-snake-and-connect-four/ #flexibleprintedcircuitboard #PrintedCircuitBoard #ATtinyHacks #hardware #flexible #battery #flashy #board #led #pcb

Blinky Business Card Plays Snake and Connect Four - There’s no better way to introduce yourself than handing over a blinky PCB busines... - https://hackaday.com/2023/01/16/blinky-business-card-plays-snake-and-connect-four/ #flexibleprintedcircuitboard #printedcircuitboard #attinyhacks #hardware #flexible #battery #flashy #board #led #pcb

I went to look for some inspiration to design #MossyFossy the Otter, who is not an actual mascot of the (nonexistent) #MossyFossils and I found this article from nearly a decade ago. It's not about cute PCB (as in #PrintedCircuitBoard ) art of otters, though. It's about river #otters (plural #nigigoog / #nigigwag in #Ojibwemowin ) suffering from Polychlorinated Biphenyls (which are banned) pollutions. https://www.daily-journal.com/sports/outdoors/otter-study-shows-pcb-pesticide-exposure/article_d0af5c70-b85a-5fdd-ad37-89a8e4756be8.html

Calibration Board, a series of six circuitboards, each an edition of 10, with extra available in white and matte black. They'll wall mount, stand up via bolts, or hang via loops

Available at $53 each
https://sterling-crispin.myshopify.com/products/calibration-board

I'm giving one away via Mastodon, repost this and I'll pick tomorrow🫡

#circuitboard #digitalart #art #printedcircuitboard

Racing Cars on a PCB https://hackaday.com/2022/11/24/racing-cars-on-a-pcb/ #PrintedCircuitBoard #magneticfield #magnetism #racetrack #Science #slotcar #pcb

Racing Cars on a PCB - Carl Friedrich Gauss was, to put it mildly, a polymath responsible for a large p... - https://hackaday.com/2022/11/24/racing-cars-on-a-pcb/ #printedcircuitboard #magneticfield #magnetism #racetrack #science #slotcar #pcb

Since this is FOSStodon, here's a toot for my FOSS project, #pcb-gcode.
pcb-gcode is a plugin for #Eagle PCB CAD that creates gcode files to mechanically etch and drill a #PrintedCircuitBoard using a #CNC router or mill. This allows fast #prototyping and is inexpensive for professionals and hobbyists. It also eliminates the need for toxic chemicals, and ruined t-shirts. A few thousand people on the groups.io group.
"Etchant free since 2003"
pcbgcode.com
#pcb #cad #electronics #foss

Since this is FOSStodon, here's a toot for my FOSS project, #pcbgcode.
pcb-gcode is a plugin for #Eagle PCB CAD that creates gcode files to mechanically etch and drill a #PrintedCircuitBoard using a #CNC router or mill. This allows fast #prototyping and is inexpensive for professionals and hobbyists. It also eliminates the need for toxic chemicals, and ruined t-shirts. A few thousand people on the groups.io group.
"Etchant free since 2003"
pcbgcode.com
#pcb #cad #electronics #foss

Okay, everything's installed. I had a few little hiccups, like picking a footprint with the wrong pitch (1.27 mm, needed 2.54 mm) for the programming header, so I got creative and attached a 2.54 mm header I had with wires. I also neglected the courtyard for the big inductor, so it hangs off the board. The two MOSFETs could use a little more space, but at least they're insulated to the heatsinks...

So this thing won't be passing vibe anytime soon. But, so far it seems okay electrically - as in, the housekeeping supply still puts out 5 V, and about 14.2 V for the gate driver. Nothing seems to be pulling it down, like a solder bridge or something. I should be able to get started on programming it, starting with a constant, open-loop PWM signal to the MOSFETs. Then I can look at RS485 comms, and proper control loops.

For those who've only seen bits and pieces of my postings on this, this circuit is just a buck converter. Or a boost converter, in the opposite direction. I just wanted to play around with one, and will probably revise the board in the future.

Basically, it's mean to work with a 12 or 24 VDC nominal bus on the low voltage side, and a 24 or 36 VDC bus on the high voltage side. (In other words, voltage you'd see from a 12, 24, or 36 VDC lead acid battery.) It's mostly to play around, but I intend to add extra logic to make it charge a higher voltage battery from a lower voltage one (or vice versa). Could also be used for photovoltaic maximum power point tracking (MPPT) I guess, but that's not the main intent right now.

#electronics #BuckConverter #PrintedCircuitBoard #kicad6 #PowerElectronics

Looks like it's working with about 37.5 V, from 3 12 volt #batteries. So not too bad. Once again, I have the shield just in case.

#electronics #PowerConversion #BuckConverter #PrintedCircuitBoard #LeadAcidBatteries #36v

Alright, I have part of this assembled, now to apply power. This is just the housekeeping supply, so I'm really just trying to see if I can get 5 volts out.

#electronics #PrintedCircuitBoard #PowerConversion

here's a bit of silver inkjet-printed circuit with a flip-chip die bonded using anisotropic conducting adhesive. The resistance of the traces are still too high for the device to function. photonic sintering might help but that equipment is offline for repairs with a blown capacitor bank. so I'll try wider traces next.
#printedcircuitboard #pcb #electronics #inkjet #pickandplace