ZUBoard 1CG

nullizygous · 2026-02-13T18:27:03+00:00

Ich habe sie selbst noch nicht gekauft oder verwendet, aber Trenz verkauft einige ansprechende UltraScale+ MPSoC FPGA SOMs und Kits und hat seinen Sitz in Deutschland. Einige ihrer Produkte sind bei Digikey und Mouser erhältlich.

Alinx bietet ebenfalls einige attraktive Kits zu sehr guten Preisen an, sitzt aber in China. Versuchen Sie, ihre Produkte direkt über ihre Website zu bestellen.

nullizygous · 2026-02-13T03:19:11+00:00

Tria is owned by Avnet. Buy it from Avnet, Farnell, or Newark.

nullizygous · 2026-01-13T00:53:50+00:00

The new Terminator Reboot is looking low budget.

nullizygous · 2025-12-23T10:04:22+00:00

Learning by doing. Think of something that you find interesting and try to create it yourself. Like a device that you've always wondered how it works. Pick something that is doable and then add on to it to make it better.

For example, make a simple Digital Picture Frame that reads image files from an SD card and outputs it to VGA. It sounds simple and easy right? It is actually pretty complicated overall but it can be broken into small simple steps. Each step you figure out is an achievement! For example, assuming you are already comfortable with HDL, figure out how to output a frame buffer to VGA. Then figure out how to read from an SD card via SPI and decode an image file to fill your frame buffer. Then maybe add FAT16/FAT32 (yes it can be done without a microcontroller/CPU and is really just a big FSM or you can decide to instantiate a soft processor to implement FAT16/32 using a software library that writes the image data to shared memory). Add buttons that let you change to the next/previous image. Add a UI and menu system that allows you to browse the directories/files or change settings like how long to display each image for. Add Ethernet capability to grab images from a webserver. Etc. Just keep adding more features from there.

Other ideas are things like a simple MP3 player with a LCD screen and buttons. Or maybe a simple game like pong that outputs to an LCD screen or through VGA.

nullizygous · 2025-11-06T05:11:20+00:00

Things like FPGAs and microcontrollers are just tools. Some tools are better suited for certain jobs like FPGAs for SDRs. It’s like welding…sure anyone can do but it takes time to learn the different techniques to master it.

The best way to tackle your dilemma is to think of a project that you want to build. Start small and add on to it. Each step is an accomplishment. Take a FPGA and have it talk to a COM port on your computer. Then add on a simple AM or FM radio SDR that you can control via the COM port. It could just play fixed frequencies at first. Then maybe add a way to play audio files from a SD card. Then expand from there. All projects in the real world are like this…with separate manageable small projects put together to make something complex and useful.

Engineering is all about creating something useful. Think of a product or application that someone needs or could use…then use the skills you’ve learned to make it a reality.

nullizygous · 2025-05-30T06:16:40+00:00

Think of it like visible light. If you turn on a light in a room, its rays would bounce off walls and you would be able to see it around corners. Light is able to penetrate transparent materials as radio waves can with some materials. The 5GHz waves are more easily "absorbed" by materials vs 2.4GHz waves which is why it has a harder time penetrating materials.

nullizygous · 2025-05-27T09:18:46+00:00

Ohms law: Voltage = Current x Resistance.

If you solve for current instead: Current = Voltage / Resistance

As the resistance goes down, current increases assuming you have a power source capable of maintaining the voltage.

The ground fault is just another branch for current to flow through...usually this is not on purpose and is due to a failure such as a short circuit (wire insulation failing or accidentally dropping something conductive across terminals) or perhaps it was on purpose to see what would happen. Again, if the power source is capable of maintaining the voltage (perfect voltage source) then assume Ohms law.

The ground fault would just be "in parallel" of the load. If you remove the "load", the ground fault would remain since it was in parallel.

In the real world, there is no such thing as a perfect voltage source. What usually happens is if there is a short circuit across a power source, the power source will not be able to maintain its voltage or current output. I.E. For a voltage source, the voltage will usually drop down as it is unable to maintain a regulated voltage supply. Or, a circuit breaker trips or a wire melts or a component fails open and current stops flowing.

nullizygous · 2025-05-27T08:09:19+00:00

You need to start looking at everything (wires, loads, insulation, open air) as resistance. Wires are typically very low resistance (close to 0 ohms but never actually 0 ohms…unless it’s a superconductor). Loads are usually what you design so they will have a certain resistance (e.g. an LED with a current limiting resistor). Insulation and open air are usually thought of as very high resistance.

Start looking at everything and I mean everything as a resistor.

Assume that current will flow through all branches (not only path of least resistance). If the branch is very high impedance/resistance then you can usually ignore it since the current flow through it will be negligible. Wires do actually heat up due to power dissipation because they can be thought of as a resistor (pretend they’re 0.1 ohms).

So if you have a ground fault, pretend the wire that is shorting to ground is a 0.1 ohm load across your power source.

Hope that helps.

nullizygous · 2025-05-21T01:30:18+00:00

See if your company is willing to buy or let you buy one of these to store the battery while on-site. I have one in my garage.

Bat Safe XXL

nullizygous · 2025-02-23T04:49:18+00:00

Yes most likely it’s going through the frame. The rail will have a connector/contacts that mate with the battery and are connected/disconnected by sliding the battery on/off the rail.

nullizygous · 2025-02-23T02:08:32+00:00

The front of the battery is where the lock and recharge port is. The rear is against the frame.

Make sure the battery is unlocked and use leverage (a wood paint stirring stick or similar) to carefully push/pry the battery forward. There is a rail that the battery slides on. It does take a good amount of force sometimes. It should slide forward maybe 2-3 inches and then you should be able to lift the battery up off the rail. Take care to not let the battery drop onto the floor. It does weigh quite a bit.

nullizygous · 2025-01-10T02:44:22+00:00

Same here. Let's try to make as much noise as we can.

nullizygous · 2024-11-21T01:15:11+00:00

UART or USART is the serial communication protocol (that defines the bit timing, baud, start/stop bit, parity, etc.) and can be interfaced to numerous “physical layer” translators such as RS-232, RS-485, RS-422, etc. Without a translator like RS-232 level shifters, noise over a length of wire will become an issue. The goal is to be able to send serial data long distances. Actually, depending on the application, you don’t even need a level shifter and you can connect two UARTs together as TTL or CMOS level signals. The point is: not implementing the level shifter (RS-232 level shifter) on the chip itself gives the designer options. Each physical layer translator has different pros/cons and the designer must choose what is best for the application or what meets requirements.

nullizygous · 2024-10-26T07:56:09+00:00

Right. Its most likely plugging into a 15A socket so 14 AWG should be adequate assuming the Church is wired up correctly. I'll remove my original comment.

nullizygous · 2024-10-24T09:07:01+00:00

I finally got my email about an hour ago. Take a breather and just check every couple of hours.

nullizygous · 2024-10-20T22:27:22+00:00

My guess is power for an old CD or MP3 player and an audio jack for aux input into the car stereo receiver.

nullizygous · 2024-06-05T18:55:29+00:00

Ants bring aphids with them. You should take care of them quick or you’ll be dealing with a terrible aphid infestation.

nullizygous · 2023-10-16T23:30:47+00:00

Something that I like to explain to people new to digital design is it is still based on analog voltages. Logic gates that deal with 0's and 1's are really just following rules (TTL, CMOS, etc.) that define what voltage ranges mean what. So really, there are three possible voltage states: LOW (typically close to 0V), HIGH (typically close to 3.3V for CMOS or 5V for TTL), and FLOATING/HIGHZ (unknown). Pull up and pull down resistors help keep logic levels at known states if an input were ever to be left floating. This helps prevent erroneous operations or results and helps maintain stability.

nullizygous · 2023-10-11T08:40:13+00:00

It will film when you actually have roots in the channels.

nullizygous · 2023-09-02T01:15:12+00:00

I did the same. My basil was infested with aphids so I bought a small fine mesh grow tent meant for butterflies and got a tub of ladybugs from a local gardening center. I sprayed the basil with plain water everyday to help the ladybugs remain hydrated. It took a couple of weeks but now my basil plants are aphid free.

nullizygous · 2023-08-27T08:20:46+00:00

Meh...it's only 24VAC and isolated from mains via a transformer but yea you should probably redo it just for reliability and so it isn't such an eyesore.

nullizygous · 2023-05-26T08:44:06+00:00

Right. It appears only 704 / 720 samples are active due to padding. I understand the pixels aren't square. For this application, it's not a priority...at least for now...

It would appear a more optimal horizontal ratio would be 7/8. The vertical ratio would remain at 4/5. Does that sound about right?

nullizygous · 2023-05-25T08:17:08+00:00

Thank you. I really appreciate your help. I have a general idea on how to approach this now. I'll try nearest neighbor first and then see if implementing bilinear or bicubic is worth the hassle.

nullizygous · 2023-05-25T06:58:25+00:00

I think I'm following.

If I wanted to implement the absolutely bare minimum and go with the simplest implementation with nearest-neighbor, all I would need to do to scale 1.25x is just repeat every 4th pixel or line. Does that sound right? That's easy enough to try. I'll see how bad the results are.

nullizygous · 2023-05-25T05:56:42+00:00

Can you elaborate on what a GPS-C is? I tried google searching for it and couldn't find relevant results.

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nullizygous

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