Palm Pilot 5000 - graffiti writing speed test BarsMonster 2014-05-06 | Palm Pilot 5000 - graffiti writing speed test.Graffiti took me 36 seconds, screen keyboard - 33 seconds.Keep in mind that I wasn't using Graffiti for like 10 years :-)
Math on mechanical calculator Felix-M (Феликс-М) BarsMonster 2024-06-08 | Or "Iron Felix" / "Железный Феликс". Thanks https://elektronika.su/en/ for letting me play with it :-)I misread correct Pi calculation at the end (facepalm). Mechanical calculator makes less mistakes than me :-)
Laptop battery - last discharge cycle BarsMonster 2024-04-05 | Action starts at 4:10 (only one cell is spectacular) Uploaded as a warning on lithium battery safety. This is old battery from Lenovo laptop. Protection circuit disabled it so I had to replace it. This one went on it's last rapid discharge cycle. Puncture had not started thermal runaway. Battery fire was much less violent that I have anticipated - but one can still see molten red-hot metal.
Lichee Console 4A - portable RISC-V mini-laptop unboxing BarsMonster 2024-01-15 | Review: https://3.14.by/en/read/RISC-V-Sipeed-Lichee-Console-4A-Alibaba-T-Head-TH1520-reviewUnboxing and first tests
Phantom Liberty - Cyberpunk 2077 BarsMonster 2023-09-26 | Day 1 walk-through start to finish, all in one sitting, like good old times. Anything longer requires you to be a biorobot :-) Starting from 77 hour save of the original game.Yes, first entry into Dogtown is probably sub-optimal :-)
3rd turn is the most dangerous, yes, this one - Kerenzerberg BarsMonster 2023-01-29 | Sledges at Kerenzerberg, Glarus nord, SwitzerlandA bit of surprise ice under the snow on inner side of the track...
Zipline at Hoch-Ybrig - Switzerland BarsMonster 2022-10-23 | Zipline at Hoch-Ybrig - Switzerland. Last day of the season.
Lithium battery puncture fire BarsMonster 2022-10-21 | Do not repeat. For safe lithium battery disposal - discharge to 0V.Due to failure of the charger battery was overcharged from 4.3V to 4.65V, therefore it was not safe to use it anymore. This is how it's life ended. Always wear PPE when doing weird things and never charge lithium batteries unattended! Even more happy that 6 months ago I bought a bunch of glassfiber bags for lithium batteries. I dream that one day I will have workshop with non-flammable floor and shelves...
First attempts on laser chip decapsulation BarsMonster 2022-07-08 | zeptobars.com/en/read/laser-decapsulation-fail-not-so-fast First experiments (few of many attempts). MOPA fiber laser, 15-30W power. Trying to find minimum pulse energy while still eating through plastic. I am trying to find process window where plastic is gone, but chips is not yet damaged. Unfortunately, it seems it is impossible to do that easy for glass-filled plastic. Let me know if you know how to make it better.
Flying HX115 LR (60fps) BarsMonster 2022-04-22 | Still learning to fly. Camera replaced to Baby Ratel 2. Finally got 60fps analog video on YouTube (upscaling to 720p required for 60fps, 1080p for higher bitrate). Bluejay ESC firmware @48kHz allowed to enable RPM filtering, but PID need to be re-tuned. Demag compensation = high was essential for reliable motors restart in flight (it was somewhat of an issue with stock settings).
Voron V0.1 - Somewhat faster, ASA-X, 175/306 mm/s, 25000 mm/s² (V0.1430) BarsMonster 2022-02-06 | https://3.14.by/en/read/Voron-V0.1-coreXY-printer-ferrariI'll have to settle at this max speed for a while. Printer is limited by cooling. Initially 100% hotend heater was not enough to keep 265°C at this speed, so I overclocked printer a little to 28V (+36% heater power). 28V is a limit for TMC2209. First level is intentionally slightly slower to have higher speed "contrast".
Voron V0.1 - Test print, ASA-X, 150/225 mm/s, 20000 mm/s² BarsMonster 2022-02-04 | Perimeters, top/bottom - 150mm/s, infill 225 mm/s, 20'000 mm/s² acceleration. ASA-X @265°C, Heatbed @85°C. Small prints are cooling-limited.
First print on Voron v0.1 BarsMonster 2022-01-28 | 120(outer wall)-160(inner)-240(infill) mm/s print speed, 10'000 mm/s acceleration. Very impressed with ease of tuning. Very minimal ringing even without input shaping. Due to direct extruder and high accelerations - good results even without linear advance. Now need to finish case assembly, wire management, calibrate it all and get a personal Voron plate at 20'000 mm/s :-)
Toboggan at Pilatus - Switzerland BarsMonster 2020-11-22 | Now I have an excuse to buy tiny action camera for next season. Video is stabilized, hence some artifacts.
First run of Edwards EXT255H turbo-molecular pump BarsMonster 2019-12-16 | https://3.14.by/en/read/Edwards-EXT255H-EXDC160-turbomolecular-pumpIt did not disintegrated itself :-) I was surprised that it runs quieter than rotary vane backing pump. 3:20 - full speed, 3:53 - roughing pump stopped to hear the sound (WARNING, this is dangerous and could destroy your pump!!). 6:57 - slowing down with no roughing pump. Centering ring was grinded from one side to allow use of sheet of glass instead of vacuum chamber to see the rotor. With such small "chamber size" venting without exceeding maximum pressure rise rates is quite challenging.
First FPV flights - BetaFPV Beta85X BarsMonster 2019-07-05 | Audio warning - you might want to lower the volume. My very first FPV flights. 30 minutes flight time difference between first and last video segments. Things got better when I switched to AIR mode permanently, reduced rates and got 5 batteries (each gives around 3-4 minutes of flight time on such tiny quadcopters).
Melting gold with oxy-hydrogen flame BarsMonster 2019-06-25 | No reason for this other than fun. Electrolyzer running at 10V 30A
Luch Quartz watch overclocking BarsMonster 2018-12-10 | IC is replaced with function generator :-) 1x speed at @1V394x speed @4.8V507.4x speed @7V582x speed @10VReverse is achieved at slightly below each mechanical resonant frequency.
First aluminum chips on 1310 cnc - 8x speedup BarsMonster 2018-05-21 | 1.8mm HSS 2-flute endmill, 2mm aluminum thickness, 0.5mm depth step. Fusion360 adaptive ⇒ GRBL-Post-Processor CAM ⇒ grbl.
Weekend Laser Show BarsMonster 2018-05-06 | Finally had a bit of time to play with laser galvoscanner. First time in my life got laser damage of cellphone's camera when shooting this... 1W RGB laser is no joke.
Slicing Ruby like butter BarsMonster 2017-10-23 | Feed rate/tension is extremely low to achieve almost mirror-like finish on the cut surface. Manual cut could be much faster. Cutting using 0.15mm diamond saw blade. Ruby rod is glued to the glass holder so that it does not brake off at the end of the cut.
RFNA synthesis (concentrated HNO3) BarsMonster 2017-07-03 | Please note that you typically should NOT use graham condenser tilted like that, due to trapped liquid. 100g KNO3+125ml of 98% H2SO4 (~50% excess). HNO3 yield was 50ml which is around 50% - had no more time to run the process, need more efficient heat insulation next time. Too much hassle with ice at summer - next time will do it at winter or using fancier cooling.
Catalytic oxidation of acetone on copper wire in oxygen BarsMonster 2016-12-25 | After I blow pure oxygen in it - copper starts to glow white-hot right before everything catching fire.
Catalytic oxidation of acetone/alcohol on copper wire BarsMonster 2016-12-25 | Acetone works at room temperature, alcohol requires heating to 50°C due to lower vapor pressure at room temperature.
Winter is coming : 1212 hours timelapse (50 days, 28800х realtime) BarsMonster 2016-11-15 | 1215 hours (50 days) at 28'800х realtime speed. You can see how leaves get yellow and fell, then snow falls and cover everything. This was recorded on Xiaomi Yi. Source video was shoot at 60 seconds per frame, then speed up 16x more in ffmpeg (using frame averaging). Original video size was 28.7Gb at 50Mbit/sec (modified camera config).
Mint growth - 2 parts (40000x + 6000x realtime) BarsMonster 2016-10-15 | First part packs 2 weeks in 28 seconds (that is natural plant movement, there was no wind there). Second part is only 3 days, but due to daylight it is much more dynamic. Plants are mint (kinda hard to grow from seeds) and taraxacum (dandelion).
Maglev at 431km/h - Shanghai→Pudong airport, 30km in 7:20 BarsMonster 2016-06-10 | Start at 0:50, maximum speed at 3:50, another maglev passing by at 5:12 (862km/h relative speed!!!)Riding the fastest commercial train in the world. I was the only passenger in business class, lol :-) Power consumption is so high that they run it at max speed only 3.5 hours/day, rest of the day is "only" 300km/h max.
250 Sparklers - 2016 BarsMonster 2016-05-03 | Some New Year aftermath. 250 sparklers burn exponentially faster than 1. No one was harmed but safety googles are always a good idea :-)
long exposure timelapse 3 - Xiaomi Yi BarsMonster 2015-11-07 | Clouds in the beginning, clear sky, Moon and venus at the end. ISO800, 7.9s fixed exposure (maximum for Xiaomi Yi). Fixed white balance.
Long exposure timelapse 2 - Xiaomi Yi BarsMonster 2015-11-04 | Long exposure timelapse - Xiaomi Yi. ISO800, 7.9s fixed exposure (maximum for Xiaomi Yi). Fixed white balance.Less clouds this time.
Long exposure timelapse - Xiaomi Yi BarsMonster 2015-10-24 | Long exposure timelapse - Xiaomi Yi. ISO800, 7.9s fixed exposure (maximum for Xiaomi Yi). Fixed white balance.I hope someday sky will be clear all night :-)
Xiaomi Yi with 1.2mm fisheye lens BarsMonster 2015-10-20 | Don't think 155° is enough? I've replaced stock lens on Xiaomi Yi with 1.2mm fisheye lens. This is clearly an overkill, ~180°.
Soldering M328 transistor tester kit BarsMonster 2015-10-13 | Soldering M328 transistor tester kit. Works just fine right after soldering, within 1% of accurate reading of VC8145. Supplied TL431AA 2.5V reference was 2.498V, which is much better than 0.5% spec.Kit link: http://www.ebay.com/itm/381351024208
Day&Night timelapse 60p - feel free to skip around BarsMonster 2015-10-05 | Another Xiaomi Yi timelapse. Now with 2x frame interpolate (speed up, with averaging instead of skipping) + forced 60p. Feel free to skip around. Clouds on the first part. Lights on&off in the windows on the night part. Airplanes passing (3:51) by on the last part. Music by: Pick Up a Convict on Alcatraz by Chris Zabriskie is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0)Source: http://chriszabriskie.com/stuntislandArtist: http://chriszabriskie.com
Riding electrical bicycle at VDNKh. No IR filter. Mute sound advised. BarsMonster 2015-06-14 | Riding electrical bicycle at VDNKh, Moscow. No infrared cut-off filter on camera - hence funny color of green leaves. Mute sound advised.Rented Chinese noname bike. 250W wheel, 24V9Ah battery - lasted 110 minutes without any help from my side. No regenerative breaking. Motor is almost silent (unlike the video).
Мінск. Спатканне вясны Нарачанскi сшытак. Дажджлiвы сезон BarsMonster 2015-06-04 | Мінск. Спатканне вясныНарачанскi сшытак. Дажджлiвы сезонОцифровал кассету, которую дарили много лет назад...
BarsMonster медвежатник BarsMonster 2015-05-15 | Вскрываем сейф без пароля. How to open safe without password.
100000 lumen light warmup BarsMonster 2014-12-18 | http://3.14.by/en/read/nuclear-light-fixture-100klm When leaving my old flat I decided that I will not reassemble my 100'000 lumen lamp at new place - it was way too bright and not very convenient. But at last I finally shoot this comparison warm-up video at x100 speed with constant exposure and white balance. 60W incandescent lamp for comparison.
Flying Flight Design CTLS BarsMonster 2014-05-27 | Flying Flight Design CTLS - first time on a small airplane.Takeoff 3:45 . I am in control 8:45 . Landing 11:45
PalmModem unboxing and testing with PalmPilot 5000 BarsMonster 2014-05-06 | Unboxing my brand new PalmModem. Was able to find dial-up provider in different city to call there for a test.
Shooting Glock 34 BarsMonster 2014-04-25 | First time on the shooting range (since army). Recoil form Glock 34 feels much higher than my memories of AK-74 despite lower bullet energy (~600J vs ~1000J), probably due to much lower gun weight. Also, collimator sight in reality is like 10 times easier & faster for newb than open sight. Finally, shooting pistol in reality is 100 times harder than in Battlefield 4 :-D lol
Day of Earth 2014 BarsMonster 2014-03-31 | Lights were off for an hour at 29th of March 2014 to "save the earth". Quite useless from the engineering point of view (grid does not really like rapid jumps of consumed power). Video speed up 100 times.
3D Printing Owl on Wanhao Duplicator 4 BarsMonster 2014-03-11 | 3D printing Owl on Wanhao Duplicator 4. Setting are still to be improved. This is 200x of actual time (6 hours).
Electronics engineer playing with fire on the weekend BarsMonster 2013-12-31 | Electronics engineer (my colleague) playing with fire on the weekend. Operator (me) is sober.
