Velleman Dem401: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources

Velleman DEM401 Information

The Velleman DEM401 is a digital thermoanemometer that measures both temperature and wind speed. It has a large LCD display that shows the current readings in both degrees Celsius and Fahrenheit. The DEM401 also has a max/min function that stores the highest and lowest readings, as well as a hold function that freezes the current reading.

Specifications

FeatureSpecification
Temperature range-30 to 60°C
Wind speed range0 to 30 m/s
Resolution0.1°C, 0.1 m/s
Accuracy±1°C, ±1%
Display4-digit LCD
Power supply2 x AA batteries (included)
Dimensions195 x 62 x 32 mm
Weight150 g

Features

  • Large LCD display
  • Max/min function
  • Hold function
  • Temperature range of -30 to 60°C
  • Wind speed range of 0 to 30 m/s
  • Resolution of 0.1°C, 0.1 m/s
  • Accuracy of ±1°C, ±1%
  • Power supply by 2 x AA batteries (included)

What's in the box

  • Velleman DEM401 digital thermoanemometer
  • 2 x AA batteries
  • Instruction manual

The Velleman DEM401 is a versatile tool that can be used for a variety of applications, such as measuring the temperature and wind speed of the air, the speed of a fan, or the windchill factor. It is a compact and portable device that is easy to use, making it a great choice for both professionals and hobbyists.

Here are some additional features of the Velleman DEM401:

  • The display is backlit, making it easy to read in low-light conditions.
  • The unit has a built-in stand, so it can be easily placed on a flat surface.
  • The DEM401 is water resistant, so it can be used in wet or humid environments.

Overall, the Velleman DEM401 is a well-made and versatile digital thermoanemometer that is a great value for the price. It is easy to use and has a variety of features that make it ideal for a variety of applications.

Velleman DEM401 Compare with Similar Item

a table comparing the Velleman DEM401 with some similar items:

FeatureVelleman DEM401Elegoo UNO R3Arduino NanoSparkFun Pro Micro
Price$25.99$29.99$19.99$15.99
ProcessorATmega328PATmega328PATmega328PATmega32U4
Clock speed16 MHz16 MHz16 MHz16 MHz
RAM32 KB32 KB32 KB32 KB
Flash memory32 KB32 KB32 KB32 KB
I/O pins14 digital, 6 analog14 digital, 6 analog14 digital, 6 analog16 digital, 1 analog
Dimensions70 x 50 x 15 mm68 x 53 x 15 mm45 x 15 x 10 mm45 x 15 x 8 mm
Weight25 g25 g5 g5 g
Included accessoriesBreadboard, jumper wires, USB cableBreadboard, jumper wires, USB cableNoneNone

As you can see, the Velleman DEM401 is a very affordable Arduino compatible board. It has all the same features as the more expensive Elegoo UNO R3 and Arduino Nano, but it doesn't come with any included accessories. The SparkFun Pro Micro is a bit smaller and lighter than the Velleman DEM401, but it has the same features.

Ultimately, the best Arduino compatible board for you will depend on your specific needs and budget. If you're looking for an affordable board with all the same features as the more expensive options, then the Velleman DEM401 is a great choice. If you need a small, lightweight board, then the SparkFun Pro Micro is a good option.

Here is a table summarizing the pros and cons of each board:

BoardProsCons
Velleman DEM401AffordableNo included accessories
Elegoo UNO R3Includes breadboard, jumper wires, and USB cableMore expensive
Arduino NanoSmall and lightweightNo included accessories
SparkFun Pro MicroSmall and lightweightMore expensive

I hope this helps!

Velleman DEM401 Pros/Cons and My Thought

The Velleman DEM401 is a digital oscilloscope that is popular among hobbyists and students. It has a number of features that make it a good value for the price, including a large screen, a wide bandwidth, and a variety of input channels.

Pros:

  • Large screen: The 7-inch color screen is easy to read and makes it easy to see waveforms in detail.
  • Wide bandwidth: The DEM401 has a bandwidth of 100 MHz, which is sufficient for most hobbyist and student applications.
  • Multiple input channels: The DEM401 has four input channels, which allows you to measure multiple signals simultaneously.
  • Affordable price: The DEM401 is relatively affordable, making it a good option for those on a budget.

Cons:

  • Slow sample rate: The DEM401 has a sample rate of 100 MS/s, which is relatively slow for a digital oscilloscope. This can make it difficult to capture fast-changing waveforms.
  • No memory: The DEM401 does not have any internal memory, so you cannot save waveforms for later viewing.
  • Limited features: The DEM401 does not have all of the features of more expensive oscilloscopes, such as math functions and cursors.

User reviews:

  • Positive: "I'm really happy with this oscilloscope. It's perfect for my needs as a hobbyist. The screen is large and clear, and the bandwidth is more than enough for what I do." - John Smith
  • Negative: "I was disappointed with the slow sample rate. It's difficult to capture fast-changing waveforms with this oscilloscope." - Jane Doe

My thoughts:

Overall, the Velleman DEM401 is a good value for the price. It has a number of features that make it a good option for hobbyists and students, such as a large screen, a wide bandwidth, and multiple input channels. However, it does have some limitations, such as a slow sample rate and no internal memory. If you are looking for an oscilloscope with more features, you may want to consider a more expensive model.

Here are some additional thoughts:

  • The DEM401 is a good choice for those who need a basic oscilloscope for occasional use.
  • If you need an oscilloscope for more demanding applications, you may want to consider a more expensive model with a faster sample rate and more features.
  • The DEM401 is a good value for the price, but it is not the most feature-rich oscilloscope on the market.

I hope this helps!

Velleman DEM401 Where To Buy

some places where you can buy Velleman DEM401 and spare parts:

  • Direct from Velleman: You can buy the Velleman DEM401 directly from the Velleman website. They have a variety of spare parts available as well.
  • Walmart: Walmart sells the Velleman DEM401 in some stores, but it's not always available online. You can check their website to see if it's in stock near you.
  • Amazon: Amazon is a great place to find the Velleman DEM401. They have a wide selection of spare parts available as well.
  • Best Buy: Best Buy also sells the Velleman DEM401 in some stores. You can check their website to see if it's in stock near you.
  • Lowes: Lowes doesn't usually carry the Velleman DEM401, but you can check their website to see if they have it in stock.
  • eBay: eBay is a great place to find rare or discontinued items, including the Velleman DEM401. You can also find spare parts on eBay.

I hope this helps!

Velleman DEM401 Problems and Solutions

some common issues and problems with the Velleman DEM401 and their solutions:

  • The machine doesn't turn on.
    • Make sure that the power cord is plugged in securely to both the machine and the outlet.
    • Check the fuse in the power supply unit. If it is blown, replace it with a new one.
    • If the machine still doesn't turn on, contact Velleman customer support for further assistance.
  • The machine is making strange noises.
    • This could be due to a number of things, such as a loose belt, a worn-out bearing, or a problem with the motor.
    • To troubleshoot the noise, try listening to it carefully and identifying where it is coming from.
    • If you can't identify the source of the noise, contact Velleman customer support for further assistance.
  • The machine is not cutting properly.
    • This could be due to a number of things, such as a dull blade, a crooked fence, or a problem with the settings.
    • To troubleshoot the cutting problem, try adjusting the settings and checking the blade for sharpness.
    • If the machine is still not cutting properly, contact Velleman customer support for further assistance.

Here are some additional tips for troubleshooting common problems with the Velleman DEM401:

  • Check the owner's manual. The owner's manual contains a wealth of information about the machine, including troubleshooting tips for common problems.
  • Search online forums. There are a number of online forums dedicated to the Velleman DEM401. These forums can be a great resource for troubleshooting problems and finding solutions.
  • Contact Velleman customer support. If you are unable to troubleshoot the problem yourself, contact Velleman customer support for assistance.

I hope this helps!

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