Vlastimil Slinták
@uart.cz
I enjoy programming, electronics, 3D printing, and homebrewing.
Blog with my projects: https://uart.cz/en/
Author of the filament searching website: https://makerdeals.eu
From 🇨🇿🇪🇺
Blog with my projects: https://uart.cz/en/
Author of the filament searching website: https://makerdeals.eu
From 🇨🇿🇪🇺
Pinned
Vlastimil Slinták
@uart.cz
· Jan 16
🌞 Say hello to the solar-powered Meshtastic board with MPPT - now in revision D! 🚀
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
Finally! After months of development and a few PCB versions, my LTO battery packs is available to purchase. 🥳
lectronz.com/products/lto...
lectronz.com/products/lto...
LTO 3900 mAh Battery Pack with BMS
LTO 2.4 V / 3900 mAh battery pack with battery management system
lectronz.com
April 28, 2025 at 6:00 AM
Finally! After months of development and a few PCB versions, my LTO battery packs is available to purchase. 🥳
lectronz.com/products/lto...
lectronz.com/products/lto...
PCBs for this LTO BMS are home and I'm soldering the main (blue on the photo) connector to all 90 pieces.
And how is your Sunday going? 🙂
And how is your Sunday going? 🙂
April 13, 2025 at 8:14 PM
PCBs for this LTO BMS are home and I'm soldering the main (blue on the photo) connector to all 90 pieces.
And how is your Sunday going? 🙂
And how is your Sunday going? 🙂
Exciting news today. The manufacturer is ready to ship 200 LTO cells for my LTO battery back with BMS. 🥳
If all goes well, it will be available for your Meshtastic/MeshCore/Reticulum nodes by the end of this month.
lectronz.com/products/lto...
If all goes well, it will be available for your Meshtastic/MeshCore/Reticulum nodes by the end of this month.
lectronz.com/products/lto...
April 10, 2025 at 9:09 AM
Exciting news today. The manufacturer is ready to ship 200 LTO cells for my LTO battery back with BMS. 🥳
If all goes well, it will be available for your Meshtastic/MeshCore/Reticulum nodes by the end of this month.
lectronz.com/products/lto...
If all goes well, it will be available for your Meshtastic/MeshCore/Reticulum nodes by the end of this month.
lectronz.com/products/lto...
Okay, this is so cool. 😎
Two years ago, I set up a Home Assistant alert for low toner in my Brother laser printer. Then I completely forgot about it - until today, when I finally got the notification! 😅😁
#homeassistant
Two years ago, I set up a Home Assistant alert for low toner in my Brother laser printer. Then I completely forgot about it - until today, when I finally got the notification! 😅😁
#homeassistant
April 3, 2025 at 7:21 PM
Okay, this is so cool. 😎
Two years ago, I set up a Home Assistant alert for low toner in my Brother laser printer. Then I completely forgot about it - until today, when I finally got the notification! 😅😁
#homeassistant
Two years ago, I set up a Home Assistant alert for low toner in my Brother laser printer. Then I completely forgot about it - until today, when I finally got the notification! 😅😁
#homeassistant
Just got an email from a customer, and it turns out my Meshtastic Motherboard is more versatile than I thought! It works with Meshtastic, MeshCore, and also Reticulum. 💪
Any other LoRa firmware we can try?
Any other LoRa firmware we can try?
A quick test of the MeshCore firmware on my "Meshtastic motherboard". It works!
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
April 1, 2025 at 4:42 PM
Just got an email from a customer, and it turns out my Meshtastic Motherboard is more versatile than I thought! It works with Meshtastic, MeshCore, and also Reticulum. 💪
Any other LoRa firmware we can try?
Any other LoRa firmware we can try?
A quick test of the MeshCore firmware on my "Meshtastic motherboard". It works!
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
March 28, 2025 at 3:45 PM
A quick test of the MeshCore firmware on my "Meshtastic motherboard". It works!
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
Should I call it "Meshtastic/MeshCore motherboard" now? 🤔😁
My new antenna is bigger than yours! 😎 #Meshtastic
March 26, 2025 at 2:39 PM
My new antenna is bigger than yours! 😎 #Meshtastic
I bought a thing... 📻🎙️📡 #hamradio #quansheng
January 31, 2025 at 11:05 PM
I bought a thing... 📻🎙️📡 #hamradio #quansheng
I've built a pocket-sized Game Boy emulator using the RP2040 and shared all the details on my blog. Whether you're into retro gaming or love DIY projects, check it out here:
uart.cz/en/2616/pock...
#GameBoy #RetroGaming #RP2040
uart.cz/en/2616/pock...
#GameBoy #RetroGaming #RP2040
January 26, 2025 at 12:13 PM
I've built a pocket-sized Game Boy emulator using the RP2040 and shared all the details on my blog. Whether you're into retro gaming or love DIY projects, check it out here:
uart.cz/en/2616/pock...
#GameBoy #RetroGaming #RP2040
uart.cz/en/2616/pock...
#GameBoy #RetroGaming #RP2040
Another Meshtastic solar node is finished and ready for duty.
I built the first node of this design over six months ago, and it’s been working flawlessly ever since. Since then, I’ve refined the design, optimized the 3D-printed parts, and improved the electronics.
#Meshtastic #3Dprinting
I built the first node of this design over six months ago, and it’s been working flawlessly ever since. Since then, I’ve refined the design, optimized the 3D-printed parts, and improved the electronics.
#Meshtastic #3Dprinting
January 22, 2025 at 9:43 AM
Another Meshtastic solar node is finished and ready for duty.
I built the first node of this design over six months ago, and it’s been working flawlessly ever since. Since then, I’ve refined the design, optimized the 3D-printed parts, and improved the electronics.
#Meshtastic #3Dprinting
I built the first node of this design over six months ago, and it’s been working flawlessly ever since. Since then, I’ve refined the design, optimized the 3D-printed parts, and improved the electronics.
#Meshtastic #3Dprinting
Ever had one of those cheap LED light chains that dim as batteries drain? Me too. So, I modded mine into a USB-C rechargeable version with constant brightness. No more dead AA batteries. It's a neat little project, and here's how I did it. 🧵
January 17, 2025 at 11:57 PM
Ever had one of those cheap LED light chains that dim as batteries drain? Me too. So, I modded mine into a USB-C rechargeable version with constant brightness. No more dead AA batteries. It's a neat little project, and here's how I did it. 🧵
🌞 Say hello to the solar-powered Meshtastic board with MPPT - now in revision D! 🚀
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
January 16, 2025 at 10:41 AM
🌞 Say hello to the solar-powered Meshtastic board with MPPT - now in revision D! 🚀
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
I made some tweaks to the PCB design based on user feedback. And since I was ordering a larger batch (50 pieces), I prepared it as a PCB panel - my first one ever!
Check it out here: lectronz.com/products/sol...
My soldering skills are getting better with every board I assemble. But I really need to buy some good quality microscope. My eyes are not getting younger 😀
#meshtastic #soldering
#meshtastic #soldering
November 30, 2024 at 2:18 PM
My soldering skills are getting better with every board I assemble. But I really need to buy some good quality microscope. My eyes are not getting younger 😀
#meshtastic #soldering
#meshtastic #soldering
I upgraded my old PS4 controller to USB-C. 🎮 No more micro USB in this house!
November 29, 2024 at 7:22 AM
I upgraded my old PS4 controller to USB-C. 🎮 No more micro USB in this house!
Why did the 'via' go to therapy?
It was feeling 'through-hole' inside.
🥁😅 PCB joke, haha... OK, I'll let myself out.
It was feeling 'through-hole' inside.
🥁😅 PCB joke, haha... OK, I'll let myself out.
November 28, 2024 at 3:35 PM
Why did the 'via' go to therapy?
It was feeling 'through-hole' inside.
🥁😅 PCB joke, haha... OK, I'll let myself out.
It was feeling 'through-hole' inside.
🥁😅 PCB joke, haha... OK, I'll let myself out.
Thinking about a new project: a USB hub for makers! Planned features: USB-C, external power, built-in UART with persistent logging, SWD for debugging/programming, and two USB-C ports for communication and powering your project with voltage/current measurement.
Did I forget anything important? 🤔
Did I forget anything important? 🤔
November 27, 2024 at 8:56 PM
Thinking about a new project: a USB hub for makers! Planned features: USB-C, external power, built-in UART with persistent logging, SWD for debugging/programming, and two USB-C ports for communication and powering your project with voltage/current measurement.
Did I forget anything important? 🤔
Did I forget anything important? 🤔
My Meshtastic node, powered by a 10W solar panel and a 3Ah Li-Pol, has been on the roof since July. Its current uptime is 84 days, and even with winter approaching and the sun often hiding behind clouds, the battery stays above 90% all the time. 🔋☀️
November 26, 2024 at 9:39 PM
My Meshtastic node, powered by a 10W solar panel and a 3Ah Li-Pol, has been on the roof since July. Its current uptime is 84 days, and even with winter approaching and the sun often hiding behind clouds, the battery stays above 90% all the time. 🔋☀️
I'm excited to share my first product. 🥳 It's a Meshtastic motherboard with MPPT charger and multi-chemistry battery support. Ideal for off-grid solar powered Meshtastic installations.
Designed, manufactured and sold by me on Lectronz.
lectronz.com/products/sol...
Feel free to ask any questions.
Designed, manufactured and sold by me on Lectronz.
lectronz.com/products/sol...
Feel free to ask any questions.
Meshtastic Motherboard with RAK4630
Meshtastic motherboard with RAK4630 (868 MHz) and MPPT charger.
lectronz.com
November 25, 2024 at 9:31 AM
I'm excited to share my first product. 🥳 It's a Meshtastic motherboard with MPPT charger and multi-chemistry battery support. Ideal for off-grid solar powered Meshtastic installations.
Designed, manufactured and sold by me on Lectronz.
lectronz.com/products/sol...
Feel free to ask any questions.
Designed, manufactured and sold by me on Lectronz.
lectronz.com/products/sol...
Feel free to ask any questions.
My latest project: a macro keyboard with 12 MX Cherry switches, an e-ink display, and an RP2040. Perfect for KiCAD and FreeCAD/Fusion 360 shortcuts to make life easier.
November 23, 2024 at 7:48 AM
My latest project: a macro keyboard with 12 MX Cherry switches, an e-ink display, and an RP2040. Perfect for KiCAD and FreeCAD/Fusion 360 shortcuts to make life easier.
If you're interested in Meshtastic, I've translated my text about the design of the RAK4630 motherboard. More details can be found here:
uart.cz/en/2534/sola...
I already made and sold more than 30 pieces to Meshtastic enthusiasts here in Czechia. Let's make the network bigger 😀
uart.cz/en/2534/sola...
I already made and sold more than 30 pieces to Meshtastic enthusiasts here in Czechia. Let's make the network bigger 😀
November 15, 2024 at 4:02 PM
If you're interested in Meshtastic, I've translated my text about the design of the RAK4630 motherboard. More details can be found here:
uart.cz/en/2534/sola...
I already made and sold more than 30 pieces to Meshtastic enthusiasts here in Czechia. Let's make the network bigger 😀
uart.cz/en/2534/sola...
I already made and sold more than 30 pieces to Meshtastic enthusiasts here in Czechia. Let's make the network bigger 😀
That was a lot of soldering! 😅 Who would have thought soldering the same component (the RAK module) 20 times would take half a day? I really need to get a hot plate and try using solder paste.
The board is for solar-powered #Meshtastic node, if anyone is curious.
The board is for solar-powered #Meshtastic node, if anyone is curious.
November 11, 2024 at 8:07 AM
That was a lot of soldering! 😅 Who would have thought soldering the same component (the RAK module) 20 times would take half a day? I really need to get a hot plate and try using solder paste.
The board is for solar-powered #Meshtastic node, if anyone is curious.
The board is for solar-powered #Meshtastic node, if anyone is curious.
📡🔋☀️ Alright, my new solar-powered Meshtastic node with LTO battery pack is almost done. 🥳🎉
November 8, 2024 at 3:20 PM
📡🔋☀️ Alright, my new solar-powered Meshtastic node with LTO battery pack is almost done. 🥳🎉
My new PCB: USB-C battery charger with UART. It's going to be useful for many of my battery powered projects where communication with the MCU is necessary.
As a side effect it can be a USB-UART converter, UPDI programmer, ESP32 programmer and maybe more.
As a side effect it can be a USB-UART converter, UPDI programmer, ESP32 programmer and maybe more.
October 18, 2024 at 8:21 PM
My new PCB: USB-C battery charger with UART. It's going to be useful for many of my battery powered projects where communication with the MCU is necessary.
As a side effect it can be a USB-UART converter, UPDI programmer, ESP32 programmer and maybe more.
As a side effect it can be a USB-UART converter, UPDI programmer, ESP32 programmer and maybe more.
Meditating Yoda joined our 3D-printed lithophanes family. More to come, as I enjoy making these. #3Dprinting
Models are available here: www.printables.com/model/767438...
Models are available here: www.printables.com/model/767438...
March 20, 2024 at 6:41 AM
Meditating Yoda joined our 3D-printed lithophanes family. More to come, as I enjoy making these. #3Dprinting
Models are available here: www.printables.com/model/767438...
Models are available here: www.printables.com/model/767438...
To all 3D printing enthusiasts: there are nice discounts today on PLA and PETG filaments by SUNLU, eSUN, and ERYONE (they have amazing two-colour variants) on Amazon DE. It's around 16 to 20 EUR per kg. 🎉🥳 #3Dprinting #filament
I'll buy two-colour PLA to try.
makerdeals.eu?deals=DF
I'll buy two-colour PLA to try.
makerdeals.eu?deals=DF
MakerDeals.eu: Filament search tool
Discover and compare 3D printing filaments on Amazon effortlessly with MakerDeals.eu!
makerdeals.eu
March 18, 2024 at 7:57 AM
To all 3D printing enthusiasts: there are nice discounts today on PLA and PETG filaments by SUNLU, eSUN, and ERYONE (they have amazing two-colour variants) on Amazon DE. It's around 16 to 20 EUR per kg. 🎉🥳 #3Dprinting #filament
I'll buy two-colour PLA to try.
makerdeals.eu?deals=DF
I'll buy two-colour PLA to try.
makerdeals.eu?deals=DF