Petr Dvorak
@thatkicadguy.bsky.social
🚀 #ThatKiCADguy :: Content creator :: HW designer :: 🤝 (He/Him)
🤝 Electricity is all about connections. 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭!
👉 I am 𝙏𝙝𝙖𝙩 𝙆𝙞𝘾𝘼𝘿 𝙜𝙪𝙮
🚀 [email protected]
🤝 Electricity is all about connections. 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭!
👉 I am 𝙏𝙝𝙖𝙩 𝙆𝙞𝘾𝘼𝘿 𝙜𝙪𝙮
🚀 [email protected]
You asked me to measure the fast transient response of the newly developed LM61440 buck.
And I said yep.
Before I could measure these particular characteristics, I had to design a dual power switch, allowing me to measure them fast enough.
Will be released as a Hardware Design Template soon.
And I said yep.
Before I could measure these particular characteristics, I had to design a dual power switch, allowing me to measure them fast enough.
Will be released as a Hardware Design Template soon.
November 25, 2025 at 6:08 AM
You asked me to measure the fast transient response of the newly developed LM61440 buck.
And I said yep.
Before I could measure these particular characteristics, I had to design a dual power switch, allowing me to measure them fast enough.
Will be released as a Hardware Design Template soon.
And I said yep.
Before I could measure these particular characteristics, I had to design a dual power switch, allowing me to measure them fast enough.
Will be released as a Hardware Design Template soon.
Thank you for your patience. When I asked to wait for a little while, I didn't expect what happened...
More work, more schematics, less time.
This particular evaluation board tests Microchip Technology Inc. MTCH9010 sensor.
More work, more schematics, less time.
This particular evaluation board tests Microchip Technology Inc. MTCH9010 sensor.
November 24, 2025 at 6:15 AM
Thank you for your patience. When I asked to wait for a little while, I didn't expect what happened...
More work, more schematics, less time.
This particular evaluation board tests Microchip Technology Inc. MTCH9010 sensor.
More work, more schematics, less time.
This particular evaluation board tests Microchip Technology Inc. MTCH9010 sensor.
I am working on a device that overlaps my math skills.
The Analog Devices AD734 is an analog multiplier/divider IC.
Imagine you’re designing a piece of instrumentation, say a sensor frontend for measuring a signal amplitude that varies, and you want real-time analog control of gain or modulation.
The Analog Devices AD734 is an analog multiplier/divider IC.
Imagine you’re designing a piece of instrumentation, say a sensor frontend for measuring a signal amplitude that varies, and you want real-time analog control of gain or modulation.
November 21, 2025 at 7:55 AM
I am working on a device that overlaps my math skills.
The Analog Devices AD734 is an analog multiplier/divider IC.
Imagine you’re designing a piece of instrumentation, say a sensor frontend for measuring a signal amplitude that varies, and you want real-time analog control of gain or modulation.
The Analog Devices AD734 is an analog multiplier/divider IC.
Imagine you’re designing a piece of instrumentation, say a sensor frontend for measuring a signal amplitude that varies, and you want real-time analog control of gain or modulation.
• Ordering with 𝗣𝘂𝘀𝗵 𝗹𝗮𝘆𝗼𝘂𝘁 𝘁𝗼 𝗔𝗜𝗦𝗟𝗘𝗥 plugin
• Short delivery time
• EU company
The boards are usually on my desk within 10 days. The quality is always top-notch.
I’m grateful for the generous support from @aisler.net, whose 2-layer Beautiful Boards follow their name
Thank you for the support! 🫶🏻
• Short delivery time
• EU company
The boards are usually on my desk within 10 days. The quality is always top-notch.
I’m grateful for the generous support from @aisler.net, whose 2-layer Beautiful Boards follow their name
Thank you for the support! 🫶🏻
November 20, 2025 at 6:17 AM
• Ordering with 𝗣𝘂𝘀𝗵 𝗹𝗮𝘆𝗼𝘂𝘁 𝘁𝗼 𝗔𝗜𝗦𝗟𝗘𝗥 plugin
• Short delivery time
• EU company
The boards are usually on my desk within 10 days. The quality is always top-notch.
I’m grateful for the generous support from @aisler.net, whose 2-layer Beautiful Boards follow their name
Thank you for the support! 🫶🏻
• Short delivery time
• EU company
The boards are usually on my desk within 10 days. The quality is always top-notch.
I’m grateful for the generous support from @aisler.net, whose 2-layer Beautiful Boards follow their name
Thank you for the support! 🫶🏻
I delivered what you've asked for, as always. I'm here to make electronics fun.
Dr. Christopher A. Tucker asked me to test the announced Beny-devices Hardware Design Template of the Texas Instruments linear charger BQ25186 with a 18650 3.7V cell
Dr. Christopher A. Tucker asked me to test the announced Beny-devices Hardware Design Template of the Texas Instruments linear charger BQ25186 with a 18650 3.7V cell
November 18, 2025 at 6:12 AM
I delivered what you've asked for, as always. I'm here to make electronics fun.
Dr. Christopher A. Tucker asked me to test the announced Beny-devices Hardware Design Template of the Texas Instruments linear charger BQ25186 with a 18650 3.7V cell
Dr. Christopher A. Tucker asked me to test the announced Beny-devices Hardware Design Template of the Texas Instruments linear charger BQ25186 with a 18650 3.7V cell
If you asked me what device to use for liquid detection, I'd say, "I don't know, but I will find out".
This particular evaluation board tests Microchip Tech Inc. MTCH9010 sensor.
The sensor detects liquids using two methods. A ~ conductive method. B ~ capacitive.
Please give me a little while.
This particular evaluation board tests Microchip Tech Inc. MTCH9010 sensor.
The sensor detects liquids using two methods. A ~ conductive method. B ~ capacitive.
Please give me a little while.
November 17, 2025 at 2:13 PM
If you asked me what device to use for liquid detection, I'd say, "I don't know, but I will find out".
This particular evaluation board tests Microchip Tech Inc. MTCH9010 sensor.
The sensor detects liquids using two methods. A ~ conductive method. B ~ capacitive.
Please give me a little while.
This particular evaluation board tests Microchip Tech Inc. MTCH9010 sensor.
The sensor detects liquids using two methods. A ~ conductive method. B ~ capacitive.
Please give me a little while.
These are my all-time favourite hook cables.
Banana to hook and hook to hook. I love all.
During my KiCad design live streams, I frequently mention that I want to place the THT soldering pads close to the board edge because I want to hook my hook cables there.
I love them.
Banana to hook and hook to hook. I love all.
During my KiCad design live streams, I frequently mention that I want to place the THT soldering pads close to the board edge because I want to hook my hook cables there.
I love them.
November 14, 2025 at 6:16 AM
These are my all-time favourite hook cables.
Banana to hook and hook to hook. I love all.
During my KiCad design live streams, I frequently mention that I want to place the THT soldering pads close to the board edge because I want to hook my hook cables there.
I love them.
Banana to hook and hook to hook. I love all.
During my KiCad design live streams, I frequently mention that I want to place the THT soldering pads close to the board edge because I want to hook my hook cables there.
I love them.
Every time I send prototypes with screw terminals, I mark them using my Dymo marker.
Each screw terminal must be marked. Especially those mains terminals in the picture. The prototype is incomplete without the proper terminal marking.
What marker do you use?
Each screw terminal must be marked. Especially those mains terminals in the picture. The prototype is incomplete without the proper terminal marking.
What marker do you use?
November 13, 2025 at 6:22 AM
Every time I send prototypes with screw terminals, I mark them using my Dymo marker.
Each screw terminal must be marked. Especially those mains terminals in the picture. The prototype is incomplete without the proper terminal marking.
What marker do you use?
Each screw terminal must be marked. Especially those mains terminals in the picture. The prototype is incomplete without the proper terminal marking.
What marker do you use?
I've been considering buying a new scope. I realised I need this maybe much sooner.
CP1003B is a current probe with an excellent 100 MHz bandwidth and dynamic range
20 mA to 5 Apk.
That's not a typical dynamic of a low-cost current clamp sensor. That's a genuine measuring range that matters.
CP1003B is a current probe with an excellent 100 MHz bandwidth and dynamic range
20 mA to 5 Apk.
That's not a typical dynamic of a low-cost current clamp sensor. That's a genuine measuring range that matters.
November 12, 2025 at 6:23 AM
I've been considering buying a new scope. I realised I need this maybe much sooner.
CP1003B is a current probe with an excellent 100 MHz bandwidth and dynamic range
20 mA to 5 Apk.
That's not a typical dynamic of a low-cost current clamp sensor. That's a genuine measuring range that matters.
CP1003B is a current probe with an excellent 100 MHz bandwidth and dynamic range
20 mA to 5 Apk.
That's not a typical dynamic of a low-cost current clamp sensor. That's a genuine measuring range that matters.
Let's play a game. I'll guess what you think about each EDA tool I list.
• Altium Designer. Too expensive.
• OrCAD. Weird.
• PADS. Ancient
• Expedition. Complicated.
... KiCad dominates since version 6.7
• Altium Designer. Too expensive.
• OrCAD. Weird.
• PADS. Ancient
• Expedition. Complicated.
... KiCad dominates since version 6.7
November 11, 2025 at 6:12 AM
Let's play a game. I'll guess what you think about each EDA tool I list.
• Altium Designer. Too expensive.
• OrCAD. Weird.
• PADS. Ancient
• Expedition. Complicated.
... KiCad dominates since version 6.7
• Altium Designer. Too expensive.
• OrCAD. Weird.
• PADS. Ancient
• Expedition. Complicated.
... KiCad dominates since version 6.7
This is my favourite ultra-low current accelerometer.
It's Bosch Sensortec BMA400. For continuous measurement, it draws as little as ~14.5 µA in the highest-performance mode. Typical use cases are much lower.
- step counter
- activity recognition
- orientation detection
- tap/double tap
- IRQs
It's Bosch Sensortec BMA400. For continuous measurement, it draws as little as ~14.5 µA in the highest-performance mode. Typical use cases are much lower.
- step counter
- activity recognition
- orientation detection
- tap/double tap
- IRQs
November 10, 2025 at 6:22 AM
This is my favourite ultra-low current accelerometer.
It's Bosch Sensortec BMA400. For continuous measurement, it draws as little as ~14.5 µA in the highest-performance mode. Typical use cases are much lower.
- step counter
- activity recognition
- orientation detection
- tap/double tap
- IRQs
It's Bosch Sensortec BMA400. For continuous measurement, it draws as little as ~14.5 µA in the highest-performance mode. Typical use cases are much lower.
- step counter
- activity recognition
- orientation detection
- tap/double tap
- IRQs
I need a simple I2C-compatible single-cell Battery charger with a power path.
This Texas Instruments BQ25186 can charge up to 1-Amp and supports 3 to 18V input voltage.
The Texas Instruments BQ25186 can be configured to charge currents from 5 mA to 1 A in 5-mA or 10-mA steps.
This Texas Instruments BQ25186 can charge up to 1-Amp and supports 3 to 18V input voltage.
The Texas Instruments BQ25186 can be configured to charge currents from 5 mA to 1 A in 5-mA or 10-mA steps.
November 7, 2025 at 6:52 AM
I need a simple I2C-compatible single-cell Battery charger with a power path.
This Texas Instruments BQ25186 can charge up to 1-Amp and supports 3 to 18V input voltage.
The Texas Instruments BQ25186 can be configured to charge currents from 5 mA to 1 A in 5-mA or 10-mA steps.
This Texas Instruments BQ25186 can charge up to 1-Amp and supports 3 to 18V input voltage.
The Texas Instruments BQ25186 can be configured to charge currents from 5 mA to 1 A in 5-mA or 10-mA steps.
You can be effective by switching off your phone, reusing verified HW blocks, or ordering your PCBs locally.
Well, it depends. I know.
When I want to manufacture my Beny-devices Hardware Design Templates, I order only locally at @aisler.net
Well, it depends. I know.
When I want to manufacture my Beny-devices Hardware Design Templates, I order only locally at @aisler.net
November 6, 2025 at 6:36 AM
You can be effective by switching off your phone, reusing verified HW blocks, or ordering your PCBs locally.
Well, it depends. I know.
When I want to manufacture my Beny-devices Hardware Design Templates, I order only locally at @aisler.net
Well, it depends. I know.
When I want to manufacture my Beny-devices Hardware Design Templates, I order only locally at @aisler.net
I use the orthographic projection when I align connector models with footprints and when checking the component layout.
Otherwise, I use the more natural, perspective projection.
What about you?
Otherwise, I use the more natural, perspective projection.
What about you?
November 4, 2025 at 8:38 AM
I use the orthographic projection when I align connector models with footprints and when checking the component layout.
Otherwise, I use the more natural, perspective projection.
What about you?
Otherwise, I use the more natural, perspective projection.
What about you?
This funny badge is really fun.
It’s a fully Arduino-compatible device based on the Raspberry Pi RP2040 MCU. I added a tiny boost converter so it works from a single 2032 cell down to 0.7V.
See you in the video SOON!
It’s a fully Arduino-compatible device based on the Raspberry Pi RP2040 MCU. I added a tiny boost converter so it works from a single 2032 cell down to 0.7V.
See you in the video SOON!
November 3, 2025 at 7:31 AM
This funny badge is really fun.
It’s a fully Arduino-compatible device based on the Raspberry Pi RP2040 MCU. I added a tiny boost converter so it works from a single 2032 cell down to 0.7V.
See you in the video SOON!
It’s a fully Arduino-compatible device based on the Raspberry Pi RP2040 MCU. I added a tiny boost converter so it works from a single 2032 cell down to 0.7V.
See you in the video SOON!
It was fast. I replaced my reflow oven with the portable screen I'd used solely for travelling.
Last year, I bought a lovely small 16" 2.5k portable monitor. I'd used it solely for my trips.
Why can this gem not be placed on the side of the main screen regularly?
I love them. Both.
Last year, I bought a lovely small 16" 2.5k portable monitor. I'd used it solely for my trips.
Why can this gem not be placed on the side of the main screen regularly?
I love them. Both.
October 31, 2025 at 6:06 AM
It was fast. I replaced my reflow oven with the portable screen I'd used solely for travelling.
Last year, I bought a lovely small 16" 2.5k portable monitor. I'd used it solely for my trips.
Why can this gem not be placed on the side of the main screen regularly?
I love them. Both.
Last year, I bought a lovely small 16" 2.5k portable monitor. I'd used it solely for my trips.
Why can this gem not be placed on the side of the main screen regularly?
I love them. Both.
I learned a big lesson because I forgot the biggest truth I've learned.
What is the biggest truth I've forgotten? Absolute maximum mistakes can be discovered using only optical methods.
If I spent some time under the microscope, I could save my time soldering the IC.
Always use your microscope!
What is the biggest truth I've forgotten? Absolute maximum mistakes can be discovered using only optical methods.
If I spent some time under the microscope, I could save my time soldering the IC.
Always use your microscope!
October 30, 2025 at 8:14 AM
I learned a big lesson because I forgot the biggest truth I've learned.
What is the biggest truth I've forgotten? Absolute maximum mistakes can be discovered using only optical methods.
If I spent some time under the microscope, I could save my time soldering the IC.
Always use your microscope!
What is the biggest truth I've forgotten? Absolute maximum mistakes can be discovered using only optical methods.
If I spent some time under the microscope, I could save my time soldering the IC.
Always use your microscope!
For renumbering pads, go to Edit / Renumber Pads…, edit Prefix, First number, numbering step and GO for it!
October 29, 2025 at 6:26 AM
For renumbering pads, go to Edit / Renumber Pads…, edit Prefix, First number, numbering step and GO for it!
You will fall in love with this 1-Cell linear battery charger. I designed this device during a KiCad live stream in April this year
If you want an easy-to-use and FULLY configurable battery charger, here it is
_charging current in 10 mA steps
_a configurable power path
_a battery voltage follower
If you want an easy-to-use and FULLY configurable battery charger, here it is
_charging current in 10 mA steps
_a configurable power path
_a battery voltage follower
October 28, 2025 at 6:27 AM
You will fall in love with this 1-Cell linear battery charger. I designed this device during a KiCad live stream in April this year
If you want an easy-to-use and FULLY configurable battery charger, here it is
_charging current in 10 mA steps
_a configurable power path
_a battery voltage follower
If you want an easy-to-use and FULLY configurable battery charger, here it is
_charging current in 10 mA steps
_a configurable power path
_a battery voltage follower
This print makes my day. I am super happy when everything clicks. And here it did.
The surface of the CR2032 cell retainer seems to be out of focus. And it is because I focused on the surface of the Raspberry Pi RP2040 microcontroller.
Regarding the manufacturing, it really clicked today.
The surface of the CR2032 cell retainer seems to be out of focus. And it is because I focused on the surface of the Raspberry Pi RP2040 microcontroller.
Regarding the manufacturing, it really clicked today.
October 27, 2025 at 8:39 AM
This print makes my day. I am super happy when everything clicks. And here it did.
The surface of the CR2032 cell retainer seems to be out of focus. And it is because I focused on the surface of the Raspberry Pi RP2040 microcontroller.
Regarding the manufacturing, it really clicked today.
The surface of the CR2032 cell retainer seems to be out of focus. And it is because I focused on the surface of the Raspberry Pi RP2040 microcontroller.
Regarding the manufacturing, it really clicked today.
It isn't costly to be special. Today, I spent the entire morning playing with this mini Arduino gadget.
It's mini. The dimensions are 50 x 33 mm.
I discussed with ChatGPT what I want the code to do, and the machine gave me my lines. I started with a simple rainbow effect.
It's mini. The dimensions are 50 x 33 mm.
I discussed with ChatGPT what I want the code to do, and the machine gave me my lines. I started with a simple rainbow effect.
October 24, 2025 at 6:17 AM
It isn't costly to be special. Today, I spent the entire morning playing with this mini Arduino gadget.
It's mini. The dimensions are 50 x 33 mm.
I discussed with ChatGPT what I want the code to do, and the machine gave me my lines. I started with a simple rainbow effect.
It's mini. The dimensions are 50 x 33 mm.
I discussed with ChatGPT what I want the code to do, and the machine gave me my lines. I started with a simple rainbow effect.
The current comparator device based on INA214 was presented yesterday.
I’m grateful for the generous support from @aisler.net
As always, the boards arrived quickly and were of top-notch quality. The EU quality with EU delivery time.
Thank You for the Support!
I’m grateful for the generous support from @aisler.net
As always, the boards arrived quickly and were of top-notch quality. The EU quality with EU delivery time.
Thank You for the Support!
October 23, 2025 at 5:59 AM
The current comparator device based on INA214 was presented yesterday.
I’m grateful for the generous support from @aisler.net
As always, the boards arrived quickly and were of top-notch quality. The EU quality with EU delivery time.
Thank You for the Support!
I’m grateful for the generous support from @aisler.net
As always, the boards arrived quickly and were of top-notch quality. The EU quality with EU delivery time.
Thank You for the Support!
When I designed the device below, I took the following into account
The device will be collecting data. The device must have at least one universal sensor input. I added three more.
The device will be sending data to the Internet. I added a universal M.2 interface for various communication boards.
The device will be collecting data. The device must have at least one universal sensor input. I added three more.
The device will be sending data to the Internet. I added a universal M.2 interface for various communication boards.
October 20, 2025 at 5:24 AM
When I designed the device below, I took the following into account
The device will be collecting data. The device must have at least one universal sensor input. I added three more.
The device will be sending data to the Internet. I added a universal M.2 interface for various communication boards.
The device will be collecting data. The device must have at least one universal sensor input. I added three more.
The device will be sending data to the Internet. I added a universal M.2 interface for various communication boards.
See, you can't just sit down and start working on a big, complex project from scratch. Well, you can but...
It's always easier and much faster to start from verified blocks.
If you want to check what I've created and shared, take a look at www.beny-devices.eu
It's always easier and much faster to start from verified blocks.
If you want to check what I've created and shared, take a look at www.beny-devices.eu
October 17, 2025 at 9:03 AM
See, you can't just sit down and start working on a big, complex project from scratch. Well, you can but...
It's always easier and much faster to start from verified blocks.
If you want to check what I've created and shared, take a look at www.beny-devices.eu
It's always easier and much faster to start from verified blocks.
If you want to check what I've created and shared, take a look at www.beny-devices.eu
I involved AI in my workflow because I had to.
My customers AI-review my design
Yes, it is the norm today. My customers let AI review my designs because they want to be sure that I did a good job.
Should I be scared? No. I implemented AI into my workflow right away, just like that.
My customers AI-review my design
Yes, it is the norm today. My customers let AI review my designs because they want to be sure that I did a good job.
Should I be scared? No. I implemented AI into my workflow right away, just like that.
October 16, 2025 at 6:05 AM
I involved AI in my workflow because I had to.
My customers AI-review my design
Yes, it is the norm today. My customers let AI review my designs because they want to be sure that I did a good job.
Should I be scared? No. I implemented AI into my workflow right away, just like that.
My customers AI-review my design
Yes, it is the norm today. My customers let AI review my designs because they want to be sure that I did a good job.
Should I be scared? No. I implemented AI into my workflow right away, just like that.