#custompcb

[adafruit]

BIG BIG rainbows on "Sparkle motion" WLED driver board 🌈💡

We got our WLED-friend PCBs

https://blog.adafruit.com/2024/12/02/leftovers-layout-wled-board-revision-a-completed/

and are testing it with various LED grids. First, we tried out a 16x16 NeoPixel grid that runs on 5V. Since that worked well, we're now onto a much bigger 60 x 60 grid - that's 3,600 LEDs! These are some NeoPixel pebble

netting samples we're also testing at the same time; each one has 20 x 60 pixels and uses 12V power, so it's a good test of the DC pass-through for higher voltages. Since WLED has a limit of 2000 pixels per output, this demo uses the three output ports that are then 'merged' together in memory to make a single large grid. We have more to test soon: the onboard IR receiver, USB PD, I2S microphone, extra I/O pins, and I2C, so watch for those videos as they come together. Coming soon -

[perlina-hitechcircuits]

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[veetechnologies-engineering]

PCB Design Services - Vee Technologies

Vee Technologies offers a comprehensive suite of printed circuit board design services to meet the diverse needs of our clients. Our engineering team specializes in next-generation PCB Design Services that ensure your electronic designs are not only functional but also optimized for performance and reliability.

Explore more: https://www.veetechnologies.com/industries/engineering-services-and-solutions/product-engineering-manufacturing/electrical-engineering-embedded-systems/pcb-design-services.htm

[mirrorada]

We're cookin up something! 😏😏😏😏😏 Yes it's doll related! #bjd #abjd #Balljointeddoll #dollsofinstagram #bjdsofinstagram #dollstagram #bjdhobby #bjdhobbyist #bjdelectronics #electronics #custompcb #syntheticephemeraelectronics #syntheticephemeraworkshop #syntheticephemeraprints https://www.instagram.com/p/CJKtqouj7Ic/?igshid=249sk5ay5mhl

[codingheroesonline]

View this post on Instagram

A post shared by Richard Campbell (@aiinyourclass)

IoT Based Patient Health Monitoring on ESP32 Web Server By Mr Alam! - - This project is an IoT Based Patient Health Monitoring System & Monitor the Health Status of Patients on an ESP32 Web Server - - For the full video and instructions DM! - - - - #nextpcb @nextpcb_official #diyelectronics #arduino #engineering #iot #healthmonitoring #esp32 #webserver #innovation #arduinoproject #diyproject #custompcb #coding #arduinoide #pulseoximetry #powersupply #irsensor #infrared #infraredlight #temperaturesensor #healthstatus (at Busan, South Korea) https://www.instagram.com/p/B94QbvGnhhR/?igshid=5mfp4pn4go10

[seektronics]

Warning: Don't let these little bugs ruin your PCB design!

[sparkfruit]

Op success! Now to wait for graduation tomorrow... #graduationcap #astronomy #led #softcircuits #adafruit #oshpark #custompcb #ngc265 #omgrobots #frcalumni

[mermarinc]

[adafruit]

Festival of Lights… A 'USB Stick' Sparkle Motion WLED driver ✨💡🔌🌟

To wrap up this year, we're doing 8 days (maybe!) of light-filled designs. We started with the Sparkle Motion Mini

which can drive thousands of shimmering RGB LEDs. Next, we were going through some of our NeoPixel samples today and found some "LED Christmas light kit" with star LEDs, its basically these stars

with a little USB plug that has IR, a crummy mic, a tactile switch to cycle modes manually, and a tiny microcontroller that turns the LED selections to different patterns - kinda like this:

The idea is cute - but the implementation could be improved with a lil sparkle motion

! we made a PCB that would fit into the same plastic enclosure but with an ESP32 instead. it's got an IR receiver, ICS-43434 I2S digital microphone

https://www.digikey.com/short/mmv3tthz

gpio 0 button in the 'right' place, 5V 2A fuse, USB-serial converter for uploading/debugging, and two level-shifted outputs. We can probably get the case in quantity or have this be a 'DIY replacement' that folks can use to make their existing setups WLED/xLights friendly.

[bippulife]

View this post on Instagram

A post shared by BIPPU LIFE: VIP CAR COMMUNITY (@bippulife)

@socal_450h ・・・ Point of no return....#platinumvip #chasingleds #rgbw #custompcb #q45retrofit #bippulife

[codingheroesonline]

View this post on Instagram

A post shared by Richard Campbell (@aiinyourclass)

DIY DC Motor Speed Controller - 🎥 Creative Channel Youtube - - DM for the full video and circuit design - - - #engineering #arduino #diyelectronics #dcmotor #circuitdesign #pcbboard #custompcb #diyprojects #speedcontroller #heatsink (at Busan, South Korea) https://www.instagram.com/p/B9Tyoi-nOM-/?igshid=kaxi1egg9d09

[seektronics]

Can inductor current and capacitor voltage change abruptly?

[grandepcba]

How can cold solder joints be prevented?

As we all know, cold solder joint is one of the common line faults of PCBA, so why does it happen?

One is improper production process: Due to improper production process so that it leads to an unstable state; (The component only looks like be soldered, but it's not actually.)

The other is burn-in phenomenon: The electrical appliances, after long-term using, whose components with more serious heating, its soldering spot is pretty easy to appear aging peeling phenomenon.

Thus, it’s much vital for us to pay more attention to the production process and board washing(cold solder joints can be founded), especially for those manual welding.

http://www.58pcba.com/index.php?id=639

[adafruit]

Fruit Jam RP2350B credit-card mini computer with all the fixin's 🍓🍇💾

We were catching up on a recent Hackaday hackchat with Eben Upton (https://hackaday.io/event/202122-raspberry-pi-hack-chat-with-eben-upton) and learned some fun facts: such as the DVI hack for the RP2040 was inspired by a device called the IchigoJam (https://www.hackster.io/news/ichigojam-combines-strawberry-and-raspberry-to-deliver-a-raspberry-pi-pico-powered-educational-micro-66aa5d2f6eec). We remember reading about this back when it was an LPC1114, now it uses an RP2040. Well, we're wrapping up the Metro RP2350 (https://www.adafruit.com/product/6003), and lately, we've been joking around that with DVI output and USB Host support via bit-banged PIO, you could sorta build a little stand-alone computer. Well, one pear-green-tea-fueled-afternoon later we tried our hand at designing a 'credit card sized' computer - that's 3.375" x 2.125", about the same size as a business card (https://hackaday.com/2024/05/07/the-2024-business-card-challenge-starts-now/) and turns out there's even a standard named for it: ISO/IEC 7810 ID-1 (https://www.iso.org/standard/70483.html).

Anyhow, with the extra pins of the QFN-80 RP2350B, we're able to jam a ridonkulous amount of hardware into this shape: RP2350B dual 150MHz Cortex M33 w/ PicoProbe debug port, 16 MB Flash + 8 MB PSRAM, USB type C for bootloading/USB client, Micro SD card with SPI or SDIO, DVI output on the HSTX port, I2S stereo headphone + mono speaker via the TLV320DAC3100 (https://www.digikey.com/en/products/detail/texas-instruments/tlv320dac3100irhbt/2353656), 2-port USB type A hub for both keyboard and mouse or game controllers, chunky on-off switch, Stemma QT I2C + Stemma classic JST 3-pin, EYESPI for TFT displays, 5x NeoPixels, 3x tactile switches, and a 16-pin socket header with 10 A/D GPIO + 5V/3V/GND power pins. The PSRAM will help when we want to do things like run emulations that we need to store in fast RAM access, and it will also let us use the main SRAM as the DVI video buffer.

When we get the PCBs back and assembled, what should we try running on this hardware? We're pretty sure it can run DOOM. Should that be first? :) We also need a name. Right now, we're just calling it Fruit Jam since it's inspired by the IchigoJam project.

[adafruit]

TPS65131 split boost converter revision ✅🔧

We designed this split +12/-12 power supply board based on the TPS65131 (https://www.digikey.com/en/products/detail/texas-instruments/TPS65131RGER/1672464) a few months ago, but it languished while we worked on some other projects. We had an issue where the negative power rail was unstable. Thankfully, we found a thread that suggested slowing down the VNEG feedback loop (https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/628380/tps65131-q1-abnormal-operation-of-tps65131-q1-s-vneg) with a 51k resistor. We hand-soldered that in, and it worked nicely. Then, the other fix was to flip around the trimmers so the turn direction matched the expected behavior. This should be good to book a second prototype, and then it can go into the shop.