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Andreas I just watched your video on Nano VNA's and thinking about getting one. I have a question about the calibration of the Nano VNA. The Load calibration you used was 50 ohms if I am working with 75 ohm cable, antenna and receiver do I have to calibrate with a 75 ohm load or can I still use the 50 ohm load that comes with the VNA calibration kit? If I do have to use a 75 ohm load where can I get that for the Nano VNA?

Hey, are the LD2420 just as good ? they are newer and a lot cheaper and simpler. micro motion they say

Great use of Artificial Intelligence! You're really making that machine learn. What a virtual reality we live in!

Hi, Hope you are well. Thank you very much for valuable information about sensors. Is it possible to use a pressure sensor of manufacture’s range of (0 - 1.2MPa) to read water levels of a water tank of 2.2m depth? Thank you

That's a Swiss accent?

Can we get an update on the RTK ?

I have just received the two DuoS that I have ordered from Australia 3 months ago. You can have one of them Andreas for free, take it as a thank you for your great videos. Are you by any chance close to Zürich or Baden?

Thanks for sharing your knowledge

Sir, which project is best for deploma 3rd year students (electronic and telecommunication)

any idea, if it is possible to use a pressure sensor 30 elevation meter lower of a water tank and still read the water level +- 0.1 to 0.3 m ? the water gets pumped from the spring to the water basin 30m higher. I have only 1 tube to fill and refill the basin. no electricity or cable at the basin. now I was thinking if a pressure sensor mounted at the lower location (spring) can detect the water level and how it behaves if the pump kicks in or or somebody empties the tank. would a pressure sensor be too unreliable?

HI, nice tutorial!! but from adc to webserver? how? like for baby monitor

What about the 6th floor?

A version that runs on an ESP32 would be nice, a Pi is overkill and power hungry, it could use GPS or NTP over WiFi to get the time. mind you you could also rip the guts out of the clock and wire directly to the stepper motor unit.

Where can I find the code for the simple baby monitor

So this is WAAS enabled GPS?

Thanks for the helpful information! May I ask you how you did those graphs at 9:21 ? I made a small weather station, which saves data on a sd card. I tried to make an excel chart with temperature and humidity over time and date, but excel just doesn't want to work somehow.

Real Time Kinematic (RTK) is/was either a trademark and/or a marketing term of Trimble Navigation Ltd. The difference between it and dGPS is/was corrections while the receiver was in motion, while dGPS required both the base and receiver to be stationary. 1cm horizontal precision and 1m vertical precision was available to professional users in the year 2000 (SA on or off).

How do I buy this BONO token ? Is it on any exchange ? Where do the operators convert it to money today ?

Recycled Dies. I just use a blinking LED with a 1 min interval. It's the current flow that the pack senses not a voltage drop.

Have you tried the IWISS IWS-3220M? It has parallel jaws like your expensive one

The iWiss crimper is intended for JST XH and PH connectors where the wings will fold inwards and pierce the insulation. With the Dupont style crimps, the wings should fold around the insulation without piercing it. Some crimpers which do this correctly are: Preciva. PR-3254 iWiss SN-025 Toozo TZ-4228B AMP Modu IV AMP 90202-2

Please make a video on adding external WiFi antina on node mcu esp8266 cp2102

Hi, what if I connect a USB cable for the charge on the tp board once a small solar panels are soldered? I fried small panel in this way following another tutorial (not yours). How can i protect the panel? Thanks a lot, great channel!

I bought one MilkV DuoS with eMMC and wifi. This board is very weird, because it combined many platforms on a single SBC. At the same time, Linux is extremely basic - kernel, busybox, some lightweight utilities, python 3.9 with numpy, pillow, pyserial, spi, lxml. Out of the box there's sshd (dropbear), dhcp client and server, ntp, wpa_supplicant, good old init.d and extremely simple start up scripts. Few tools such as alsa-utils, wget, curl. All development must be done in Linux virtual machine or development containers, there's no distribution with package manager, there's no compiler. Whole Linux consumes 22M of memory and 160M of disc space. Device sips 1W of power. So far I spend one day with it.

Farmers in my country are using RTK auto steer signal for almost a decade ....At first it was expensive ,over 15k euro ,but now thanks to China ,there is RTK auto steer for as low as 2-3k euro.

How do you build an Rtk rover that uses onocoy?

Hey andreas, unfortunately the aliexpress links aren't working.. If they are affiliate links (idek if that's possible on ali, but just in case) could you refresh them.. Or at least quickly comment (for my interests on that point) the titeled names of the alc-dispenser and the grease- syringe/-pistol.. Merci & lg us basel✌🏻😁

Very awesome explanation. Thank you. I just got the nanoVNA. 🙏

sir good afternoon waveform generator to laptop connecting steps please help me sir

cool

The true test of a solder sucker is a 30yearold bulk cap lead with leakage on it.

super cool!

That small black piece of steel in the middle of the handle is a wire stripper. Push the wire through, slide it into the slot and pull the insulation off. You MUST insert the wire so that when you pull, the cutting blade presses onto the body of the tool. Get it the wrong way round and you will bend the blade. You can get wrapping wire that doesn't need stripping, but you need special pins with square edges that bite into the insulation. In the 1970s I worked for Burroughs Machines who had terminals in every branch of NatWest, Barclays, Midland and Yorkshire banks, and it was a regular task to do modifications to the wire-wrapped backplane.

Gràcies!

i want that excel sheet

most of these have been around forever. this video has been a disappointment to be honest. the worst one was the "tool" to open the sim card on a phone. you can use just about anything to do that and you most certainly don't need one on your key unless you work in a cell phone store.

^^

Sag mal, welche Radar Sensoren können denn Objekte mit hoher Geschwindigkeit messen, also um die 1000 m/s. Kannst du mir da Tipps geben? Sagt dir der Sensor SMR-333 was?

I plan to buy this sensor to detect human presence in the car. Can this sensor detect human presence hiding behind the seat for example like people crouching or hiding under the blanket?

👍👍

Relife RL-055 = alcohol dispelnser we want for isopropanol Might be usefull to use the item titles from aliexpress or the key words cause in my case I tried to buy the alcohol dispenser but got an error 404 style message "does not ship to your country" without showing the site and item description. So I tried to search for it using the words you had used "alchohol dispenser" and got everything alcoholoic dispenser but nothing for diy or should I write tinker cause some might misunderstand diy like diy alcohol distillery or so. I found my item by searching for this "RL-055" and way cheaper - 6,82€ incl. shipping and taxes to germany. If I have found such item I usually do an additional "google lense search" via google chrome for such picture to get more offers and prices. but 7€ per unit (I got 2 of those) was a great deal togethter with the desoldering iron for 13€ which then after adding cables to 29€ qualified for another 4€ discount plus 4% cashback.

Try an old and trusty Linksys WRT54GL router for your 2.4GHz test you will be surprised. In the past decade the quality of new 2.4GHz routers dropped significantly as they focus more on the 5GHz band. It is both radio and software neglect. I already had multiple n/ac routers with crazy 5GHz performance but worst 2.4GHz coverage than my old WRT54GL , WNDR4300 and WRT150N.

Desoldering Iron YIHUA 30W 929D-V is not available in the USA.

5 years later, I m finally getting to do this project!

Personally, I am very interested in the integration of PoE into IoT devices. I hope you make a video on this topic someday )

The grease gun is the only thing to use for flush zerk fittings which are standard for a lot of impact tools and small machines.

A similar desoldering iron made by Zhongdi is sold by all electronics resellers in Europe, it comes in 30W and 40W varieties, and the 40W one is more common. The original model number is ZD-211, but some resellers have their own designation. Usually costs around 6-15€. Farnell's carries it as Duratool D01849, Conrad as Basetech LWK-211. Velleman carries it as VTDESLO3 in the 30W variant. Then there's McPower EPH-40 and any number of importer brands. Soldering tip cleaner: classic Tippy from Stannol. Both of these items can come out cheaper than ordering them from overseas, especially if you can just tack them on order you'd be making anyway, and you get them overnight as well. I use iwiss Micro Crimp IWS-3220M, which is simpler and does crimping steps separately, but is great to use for a beginner. iwiss is now also known as icrimp. I must have paid around 12€ for it back many years ago. The machining and material quality seems really good and i haven't had much trouble with it, though sometimes the crimps don't come out super straight because they're separate, but they're easily straightened out, and you can see clearly whether things are going OK so you have correction opportunities. For stripper i use an FS-D3 that i bought upon the review on this very channel for about 5€, i don't hate it.

I think the earth is flat so I believe we are not told how GPS really works

Sorry mate, I've been on the gold for 5 days. I need some more tools for my new project. ;).

I bought a very large balloon and already have some helium. Emergency plan is attach one node/repeater to the balloon at the end of a couple hundred foot tether. No more line of sight issues hopefully. I plan to do a test of this later this summer to see what kind of range I get in my area(no mountains around here but isn’t flat either)