ready for the next prototype
github.com/macaba/TheMa...
github.com/macaba/TheMa...
February 8, 2026 at 8:07 PM
ready for the next prototype
github.com/macaba/TheMa...
github.com/macaba/TheMa...
did I just say "coilcraft capacitors"? I mean coilcraft transformers 😅
got some PCBs for a small project from @aisler.net
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
February 7, 2026 at 2:07 PM
did I just say "coilcraft capacitors"? I mean coilcraft transformers 😅
got some PCBs for a small project from @aisler.net
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
February 6, 2026 at 6:53 PM
got some PCBs for a small project from @aisler.net
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
the coilcraft capacitors have < 1 pF interwinding capacitance 👀
after further investigation:
- the 1 mV step remains unexplained, but I suspect ground current issues
- the 100x gain causes the amplifier to slow down by a lot
- the 400 ns comparator delay was caused by the large 32 mV hysteresis I seem to have forgotten about
- the 1 mV step remains unexplained, but I suspect ground current issues
- the 100x gain causes the amplifier to slow down by a lot
- the 400 ns comparator delay was caused by the large 32 mV hysteresis I seem to have forgotten about
there are a few things wrong here:
- channel 4's waveform has an unexplained 1 mV step before the slope, theoretically it should be ~300 μV
- channel 2's waveform should be exactly 100x channel 4's waveform (so they should overlap)
- channel 3's waveform should happen sooner (by ~400 ns)
- channel 4's waveform has an unexplained 1 mV step before the slope, theoretically it should be ~300 μV
- channel 2's waveform should be exactly 100x channel 4's waveform (so they should overlap)
- channel 3's waveform should happen sooner (by ~400 ns)
February 4, 2026 at 11:03 PM
after further investigation:
- the 1 mV step remains unexplained, but I suspect ground current issues
- the 100x gain causes the amplifier to slow down by a lot
- the 400 ns comparator delay was caused by the large 32 mV hysteresis I seem to have forgotten about
- the 1 mV step remains unexplained, but I suspect ground current issues
- the 100x gain causes the amplifier to slow down by a lot
- the 400 ns comparator delay was caused by the large 32 mV hysteresis I seem to have forgotten about
"analog circuits are fun"
analog circuits:
analog circuits:
February 3, 2026 at 11:44 AM
"analog circuits are fun"
analog circuits:
analog circuits:
shoutout to Coilcraft Inc. for their insane generosity in this age of corporate stinginess
February 2, 2026 at 9:43 AM
shoutout to Coilcraft Inc. for their insane generosity in this age of corporate stinginess
istg this is the last time I'm pulling this trick (using one of the RP2040's pins to signal itself)
January 29, 2026 at 12:08 PM
istg this is the last time I'm pulling this trick (using one of the RP2040's pins to signal itself)
the only hope that keeps me going is that I am an adult with €€€ and I can walk into a Five Guys any day
January 25, 2026 at 8:30 PM
the only hope that keeps me going is that I am an adult with €€€ and I can walk into a Five Guys any day
turned out pretty decent, though using solder paste would have saved time and looked even better
January 24, 2026 at 11:29 PM
turned out pretty decent, though using solder paste would have saved time and looked even better
the reason the current source looks so small and weird is because I want to cheap out on shipping when I send this out for characterization
January 23, 2026 at 8:36 PM
the reason the current source looks so small and weird is because I want to cheap out on shipping when I send this out for characterization
I will be testing various current sources - boards from @aisler.net!
(NNNI26 for 10€ off year-round 👀)
(NNNI26 for 10€ off year-round 👀)
January 23, 2026 at 11:46 AM
I will be testing various current sources - boards from @aisler.net!
(NNNI26 for 10€ off year-round 👀)
(NNNI26 for 10€ off year-round 👀)
January 17, 2026 at 6:41 PM
Rapid Registration stencils are highly recommended
Stencil alignment is tricky, and pro tools are pricey. 🥲
Community member Strooom has solved this with a parametric 3D-printable registration tool!
Read more: community.aisler.net/t/3d-printin...
Or print your own: github.com/Strooom/PCB-Stencil-Registration-Tool
#3DPrinting #Technology #Hardware
Community member Strooom has solved this with a parametric 3D-printable registration tool!
Read more: community.aisler.net/t/3d-printin...
Or print your own: github.com/Strooom/PCB-Stencil-Registration-Tool
#3DPrinting #Technology #Hardware
3D-Printing a PCB Stencil Registration Tool
Introduction When prototyping PCBs with SMT components, you need to apply solder paste. Aisler can provide you with a matching stainless steel stencil, aka the Stellar Stencil, which is of great help. Still, aligning the PCB and the stencil is not always easy, as component pads and pitch gets smaller and smaller… EuroCircuits and Aisler are offering the so called ‘stencil registration’ : when selecting this option, the PCB and the Stencil will each have a pair of holes, which allows to align t...
community.aisler.net
January 17, 2026 at 3:03 PM
Rapid Registration stencils are highly recommended
is there anything to look forward to in the mid-long-term (20 or 30 years)? I need some motivation ig
January 10, 2026 at 12:56 PM
is there anything to look forward to in the mid-long-term (20 or 30 years)? I need some motivation ig
@aisler.net 's PCBs under the microscope - the sharpness of the solder mask is amazing (1 mm ruler on the side for scale in the second picture)
January 8, 2026 at 12:04 PM
@aisler.net 's PCBs under the microscope - the sharpness of the solder mask is amazing (1 mm ruler on the side for scale in the second picture)
January 7, 2026 at 1:13 PM
happy new year! I hope 2026 is filled with a ton of cool electronics
and I have a new @aisler.net coupon code: NNNI26 for €10 off! 🥳
and I have a new @aisler.net coupon code: NNNI26 for €10 off! 🥳
January 1, 2026 at 10:10 AM
happy new year! I hope 2026 is filled with a ton of cool electronics
and I have a new @aisler.net coupon code: NNNI26 for €10 off! 🥳
and I have a new @aisler.net coupon code: NNNI26 for €10 off! 🥳
this has got to be my funniest TMT creation
December 29, 2025 at 12:08 AM
this has got to be my funniest TMT creation
can't have too many of these
December 27, 2025 at 2:01 PM
can't have too many of these
what do I do when I quickly need to order adapter boards for a project? @aisler.net, of course!
(last two weeks of NNNI25 for €10 off!🤗)
(last two weeks of NNNI25 for €10 off!🤗)
December 18, 2025 at 12:45 PM
what do I do when I quickly need to order adapter boards for a project? @aisler.net, of course!
(last two weeks of NNNI25 for €10 off!🤗)
(last two weeks of NNNI25 for €10 off!🤗)
December 12, 2025 at 7:19 PM
I look at this thing I (re)created and I say to myself "I wish Ronald Swerlein was alive"
December 11, 2025 at 12:11 AM
I look at this thing I (re)created and I say to myself "I wish Ronald Swerlein was alive"
does this explain why when asking for help with programming, people get flamed and end up start a tribal war amongst the "experts", who then devolve into personal name-calling, but when asking for help with electronics, 3 EEs civilly discuss ideas and present one unified solution
A key factor for making technical discussions more successful (and enjoyable) is to resist the urge to one up each other. Don't try to prove you're smarter than others, instead work collaboratively towards a solution, benefiting everyone involved.
December 6, 2025 at 8:40 PM
does this explain why when asking for help with programming, people get flamed and end up start a tribal war amongst the "experts", who then devolve into personal name-calling, but when asking for help with electronics, 3 EEs civilly discuss ideas and present one unified solution