Tootfinder

🫠 DissolvPCB: Fully Recyclable 3D-Printed Electronics with Liquid Metal Conductors and PVA Substrates
#electronics

DissolvPCB: Fully Recyclable 3D-Printed Electronics with Liquid Metal Conductors and PVA Substrates
We introduce DissolvPCB, an electronic prototyping technique for fabricating fully recyclable printed circuit board assemblies (PCBAs) using affordable FDM 3D printing, with polyvinyl alcohol (PVA) as a water-soluble substrate and eutectic gallium-indium (EGaIn) as the conductive material. When obsolete, the PCBA can be easily recycled by immersing it in water: the PVA dissolves, the EGaIn re-forms into a liquid metal bead, and the electronic components are recovered. These materials can then b…

Repairing an HP 5370A Time Interval Counter
#electronics

🥃 Transparent PCBs Trigger 90s Nostalgia
#electronics

Transparent PCBs Trigger 90s Nostalgia
What color do you like your microcontroller boards? Blue? Red? Maybe white or black? Sadly, all of those are about to look old hat. Why? Well, as shared by [JLCPCB], this transparent Arduino looks …

Painful lesson of the day: the desoldering gun does not care about your feelings or your hands when clearing a clog and not being careful. However, got the CPU, PPU, WRAM, and VRAM unsoldered (including sockets) from the NES mainboard. I'll solder the VRAM and WRAM back in later. Desoldering guns make things so much easier even if I'm an idiot on occasion.
#electronics

"Safe and easy ways to recycle electricals – and even get money for your old gadgets"
#Electronics #Technology #Recycling

My first self-designed printed circuit board (that works).
#electronics

📻 Flexible Receiver Antenna Prepared Based on Conformal Printing and Its Wearable System
#electronics

Here it is in action numerically solving the Lorenz Attractor differential equations.
#electronics

Lorenz system - Wikipedia

Done! Pikocore activate! #electronics #electronicmusic

alright. emptied the pump bay (watering the hazelnut tree as I go) so I could get down into the box and loosely fit the hose onto the pump.
Now we'll turn the water back on in the filter and let the bay fill back up again from the little diversion stream.
I need to go get a couple big hoseclamps to properly secure it to the pump. But loose is fine for testing.
#poolpond #backyardProject #DIY #electronics

🌝 Reverse engineering the mysterious Up-Data Link Test Set from Apollo
http://www.righto.com/2025/07/reverse-engineering-mysterious-up-data.html
#electronics

Reverse engineering the mysterious Up-Data Link Test Set from Apollo
Back in 2021, a collector friend of ours was visiting a dusty warehouse in search of Apollo-era communications equipment. A box with NASA-st...

Hrmm, I forgot you can just print these kinds of things out. Will help when assembling the new NES power/AV board.
#electronics #3dprinting

escape! escape!!
This is what happens when you introduce a big pump (even only running at 30-50%!)
You find out REALLY fast where the low points are. I had suspicions. They have been confirmed, and temporarily rectified!
the pump is now running, hooked into the pipe to the bottom of the filter (I will cut more of it off in time so the pipe is running along the ground), plus the garden hose is continuing to add more water to the system.
No spillage! Ill fill the intake bay and then turn the garden hose off to just let it circulate.
#poolpond #backyardProject #DIY #electronics

This is kind of fun. Using an infrared receiver module (TSOP38238) to display the signals produced by a Blu-Ray player remote control on an oscilloscope. The signals are active-low and pulse-width modulated.
#electronics #oscilloscope

First test of the pump! Just turned the first pump on to make sure everything works. The regulator works! 100% power seems to draw about 160W. 50% was around 70W. Can't take a reliable picture of the display unfortunately.
I will have to cut the main wire and extend it with a good extension cord so it can reach where I need it to. At least to the little grey shed for now. The controller has to stay dry and in reasonable temperatures.
Not really looking forward to that job. I have cut/spliced/shrinkwrapped wire before but not on a $600 pump. 😬
Today though I will concentrate on hooking up the pipe to the filter to set up a circulation and figure out a temporary situation for the pump controller.
edit: btw the pumps are both Jecod 20,000L/hr varieties. I am hoping (and calculated) that they are oversized so I can run them at 50-75% most of the time.
#poolpond #backyardProject #DIY #electronics

initial pump testing has been successful!
Filled the filter and pump bay to an approriate level via garden hose. ✅
turned pump on for the first time and fixed any overflows in the system on low flow ✅
turned the garden hose off and allowed pump to circulate for awhile ✅
I brought the pump up to 100% power (180W) and confirmed inlet standpipe did not overflow indicating good distribution flow on the bottom of the filter. ✅
identified/fixed more overflowing low points with pump at high flow. ✅
tested the breather pipe by turning off the pump and making sure the water was not siphoned from the filter the pump bay ✅
I let the top water from the filter drain into the bay until the bay was full (starting to overflow into the main pond) ✅
Used the small pump to empty the pump bay of some of the dirty water... watering the blueberries and flowers in the process. ✅
tiny red bum friend? ✅ 🕷️
A successful day!!
#poolpond #backyardProject #DIY #electronics

Scored a 65W USB-C "Hama" charging block for €5 (down from €20) at "expert" #Germany. 🤓
I don't know about the brand, but the charger works fine with my devices. Crazy though the company website wants €60 for it. 🙄
#nerd #electronics #gadget #deal #savings #Deutschland

Okay, had to make a second order of components because we're kinda off the script for hooking up the NESRGB on the NESessity board. Grabbed a 7 pin header for the P1 controller so I can use the controller to change the RGB palette in use as I don't want to use a mechanical switch. Also, I really want to ensure I can remove the NESRGB without desoldering anything.
Also, it's recommended to use a second 5V linear voltage regulator, but I'm going to skip it. The reason it's recommended is that the OG NES frontloader 5V voltage regulator will overheat due to the small heatsink size. On this build, I'm pretty sure the regulator is more than sufficient to dissipate the extra heat...lol
#nes #nintendo #electronics #retrogaming