#pcbprototype

Sometimes mistakes are made in prototyping; that's why they're prototypes. The error in rev D was funny: while making the QFN80 footprint, the pins got placed clockwise rather than widdershins. Not surprisingly, that board didn't come up at all, so here's a full rip-up and reroute, with the correct pinout this time! Fingers crossed. Hopefully, this is the final revision, and we can move on to other RP2350 boards we have cooking.

Posted @withrepost • @jlcpcb Arduino based Winding Machine .👉 https://youtu.be/z-JpAZUoTSo . Tag a friend who could use this! 🧐 . . #jlcpcb #arduino #Stepper #motor #pcb #esp8266 #iot #sensor #robotics #led #printedcircuitboard #diyelectronics #pcbprototype #pcbdesign #sodering #atmel #PCBA #smt #pcbassembly (at Busan, South Korea) https://www.instagram.com/p/B4r_5lXjD42/?igshid=mnu5wkykalmj

Okay, we've got our 1.3" round TFT prototype ready for testing - and here's a cute GIF of a dial turning back and forth. It's a great way to test the display, backlight, and SD card interface. We're using a QT Py ESP32 since we need quite a bit of oomph to decode GIFs and display them in real-time. With EYESPI, no wiring is required! This is good to go - it's time to book the PCB panel!

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.

Posted @withrepost • @jlcpcb manual printer for applying solder paste 。 Full tutorial :https://youtu.be/L1YOqX-Mw7E . . . #jlcpcb #arduino #Stepper #motor #pcb #esp8266 #iot #sensor #robotics #led #printedcircuitboard #diyelectronics #pcbprototype #pcbdesign #sodering #atmel #PCBA #smt #pcbassembly (at Busan, South Korea) https://www.instagram.com/p/B4USro9jz5U/?igshid=g4ioh1gdqh24

This is something you don’t see everyday😜 What’s your craziest electronic habit or talent? Share in the comments below!! Posted @withrepost • @jlcpcb traditional China-PCB-in-pot-on-Gasoven-method @moritzsimongeist . hope it will be not burned . 😂😂 . . . #jlcpcb #arduino #Stepper #motor #pcb #esp8266 #iot #sensor #robotics #led #printedcircuitboard #diyelectronics #pcbprototype #pcbdesign #sodering #atmel #PCBA #diyelectronics (at Busan, South Korea) https://www.instagram.com/p/B36t9VoHK1J/?igshid=psq2tftgqe7q

We've got working Pixel Shifter prototype PCBs, leveling WS2811s and inverting TM1814s—final boards are booked! Also revising the Floppsy board for 3.25" drives, adding buttons, Apple Disk support, & more. Plus, we’re on the hunt for a short rotary encoder!

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