PetterHans
@bwack77.bsky.social
Embedded Software Engineer. Former Electronics R&D engineer. Loves to play with electronics on my free time.
https://youtube.com/@bwack
https://youtube.com/@bwack
Bought this camera to use with my YouTube channel. Forgot to buy a sdcard. Hmm..
November 30, 2025 at 12:14 AM
Bought this camera to use with my YouTube channel. Forgot to buy a sdcard. Hmm..
My new esd mat, trying to get the smell out of it in the sun
September 27, 2025 at 12:48 PM
My new esd mat, trying to get the smell out of it in the sun
Playing with a STM32L0, and the cubemx nad cubeide. IR LEd/sensor. For a fridge door alarm. Last attempt was with a solar panel. This time with a CR2032 battery.
September 15, 2025 at 3:31 PM
Playing with a STM32L0, and the cubemx nad cubeide. IR LEd/sensor. For a fridge door alarm. Last attempt was with a solar panel. This time with a CR2032 battery.
Updating the Ultimate64 firmware, and I see the best scanline emulation I'vr ever seen.
July 28, 2025 at 10:05 AM
Updating the Ultimate64 firmware, and I see the best scanline emulation I'vr ever seen.
A friend I met through my YouTube channel donated this board for me. The Ultimate 64 motherboard!
July 17, 2025 at 10:39 PM
A friend I met through my YouTube channel donated this board for me. The Ultimate 64 motherboard!
NAD 7120 Stereo Receiver from 1983. Fixed the dead radio. Blown transistor replaced supplying 12V. A nice feeling to be able to bring it back to life after 30 years.
May 18, 2025 at 10:55 PM
NAD 7120 Stereo Receiver from 1983. Fixed the dead radio. Blown transistor replaced supplying 12V. A nice feeling to be able to bring it back to life after 30 years.
Adding loudness to my dad's Denon 1500AE.
May 11, 2025 at 11:18 PM
Adding loudness to my dad's Denon 1500AE.
I found a problem behind the 12V regulator.
April 28, 2025 at 12:24 AM
I found a problem behind the 12V regulator.
NAD 7120 Receiver. 2x20W. No power in the tuner section.
April 27, 2025 at 7:42 PM
NAD 7120 Receiver. 2x20W. No power in the tuner section.
Aaaand it works again. Re-flowed solder joints. Replaced output transistors. Adjusted quiescent current.
March 15, 2025 at 4:23 PM
Aaaand it works again. Re-flowed solder joints. Replaced output transistors. Adjusted quiescent current.
Re-assembling the stereo amp after fixing it. It's a puzzle to put the boards together with wires and screw.
March 15, 2025 at 2:55 AM
Re-assembling the stereo amp after fixing it. It's a puzzle to put the boards together with wires and screw.
The dim bulb limiter is helping me bring up the rials voltage safely.
February 28, 2025 at 9:32 AM
The dim bulb limiter is helping me bring up the rials voltage safely.
Taking a moment to look over connections
February 28, 2025 at 12:09 AM
Taking a moment to look over connections
Nibbeling out holes for a dim bulb limiter
February 27, 2025 at 10:59 PM
Nibbeling out holes for a dim bulb limiter
Just now tried Mechanic Nano Flux paste. Clear. Almost no smell.
February 22, 2025 at 3:58 PM
Just now tried Mechanic Nano Flux paste. Clear. Almost no smell.
New transistors are soldered in my amp
February 22, 2025 at 10:16 AM
New transistors are soldered in my amp
Measuring key parameters on MOSFETs. Vgs(th) and Rds(on). This should tell if it's the real part or not. Turns out, they're OK!
February 16, 2025 at 7:15 PM
Measuring key parameters on MOSFETs. Vgs(th) and Rds(on). This should tell if it's the real part or not. Turns out, they're OK!
My sister in the late 80s. Denim overalls.
February 16, 2025 at 5:11 PM
My sister in the late 80s. Denim overalls.
Trying out the Analog Discovery 3, with an old amplifier.
February 9, 2025 at 1:48 PM
Trying out the Analog Discovery 3, with an old amplifier.
Recapping a PC Motherboard from 2006. Mostly TH parts.
January 31, 2025 at 2:28 AM
Recapping a PC Motherboard from 2006. Mostly TH parts.
Doing a recap of an old Motherboard for a friend. Grouping all caps into a table. Taking notes on an image.
January 25, 2025 at 3:25 PM
Doing a recap of an old Motherboard for a friend. Grouping all caps into a table. Taking notes on an image.
Haha. Ok. Here is a dry one:
January 22, 2025 at 12:22 PM
Haha. Ok. Here is a dry one: