But… learned something new. I was testing a new TU Learning system – “Plant”. Very interesting themes, like AI, automatization, robots, and even sex.
Started my hot-iron soldering plate device, playing with MAX6675 & co…
Playing with CNC3018 Laser Module
End switches on China CNC3018 installed (and working! Amazing thing!) now I can do auto homing, and make this thing less self-destructive.
Some weekends I spent riding my bike and exploring nice and beautiful Weinviertel, other ones I tried to set focus/distance/etc on laser…
I mean, the first time I installed laser and set some random distance and focus, everything worked flawlessly
But then I tried to do everything better, and everything went wrong. So, I need to tune these things again. Huh. Sad panda.
VFD display is up & running
Everything is placed, some code lines are written… Let’s see, what we have now:
PCBs are here!
Precisely 2 weeks after order, boards are on my table. Quality, as always, very impressive.
Fun fact, 30 small boards cost less than 10 🙂
Stencil, solder paste, some sand and frying pan – and first PCB is ready!
After correcting some small issues
I noted, what I soldered the wrong microcontroller on! Hot air, a lot of flux, and it shining again.
Some checks:
Placed some more parts, and FreeRTOS is running, LED is blinking, encoder is working and even PT6315 can turn on/off the LEDs.
Tried to get GPS working, but it somehow simply doesn’t want to work. For some seconds it was green, but then… I don’t know what to do.
I tried even to solder the antenna directly, corrected the battery charging diode (it was soldered in reverse polarity). It is cursed!
Still waiting
PCBs are still on the way (should arrive very soon). And I’ve completely forgotten to order parts! Digikey order placed. Hope package will depart before independence day.
More things happened offline. Extreme heat in the first half of week, not so hot and even cold next half.
At the commuting home suddenly rear shift leveler stopped working.
After a lot of finicky work I replaced the broken spring with one from old audio-player. And it works!
PCB in production
Very impatiently waiting for PCBs. Small one and stencil already waiting for packaging. 4-layer is still stuck in production.
Already started with programming for this board. Decided to try out FreeRTOS, huh, already facing first misunderstandings… Let’s see, if it’ll improve code overall.
Continue reading “PCB in production”VFD driver ready to be ordered
I hope, this thing is ready (after many iterations and small improvements and also multiple new uploads to JLCPCB)…
- Designed for FV651G display
- Used PT6315 driver
- SN6505 push-pull driver to generate 30Vdc anode voltage and 2.7Vac cathode voltage
- Some LEDs and buttons
- 3V3 LDO
- FRAM
- Oscillators
- USB with filter
- Header for 64 pins
- Place for GPS board, nRF24L01+ and RTC unit D3231
And everything packed in 42x100mm 4-layer PCB
Some small PCBs to save on shipping, and ready to go.
Phono preamp inside!
Finally, I’ve finished the phono preamp and placed it inside this beautiful box. Sounds great!
Continue reading “Phono preamp inside!”AVR-Doper STK500
One of my first devices was AVR-Doper STK500…
More photos!
Continue reading “AVR-Doper STK500”Experimenting with SN6505
Last week I played a lot with SN6505 from TI… So much power in so small SOT23-6.
First and foremost, power source for VFD display (30VDC anode voltage, and ~2.5VAC for cathode)…
Efficiency at max current 95%! Amazing. Let’s try to get more power!
Continue reading “Experimenting with SN6505”