Top 7 Best Function Generator kits Reviews in 2021 & Buying Guide

Generates a signal, as the name implies. On the other hand, a function generator is a minimal signal generator but with the ability to generate multifunctional waveforms.

A CRO (cathode ray oscilloscope) will look at signals generated by a function or signal generator. Although they may cost a bit more at a higher cost, the self-contained function generator is just as effective if not ready with a ready-made CRO machine.

They are extremely affordable and if you are into electronics as a hobby, you will find that building one is just as easy. In today’s list, we are going to take a look at some of the advanced DIY function generator kits available for purchase and talk about them.

The classification is based on the following and the following three factors.

  • Feature Rich:

Once it becomes a function generator, it supports all types of view forms that can generate it. From basic signs or square waves to any kind of custom waves, it should be able to generate them.

  • Compatibility

Most of these DIY kits do not come with any display. So the kit you choose should have a wider synchronization element so it can be configured once with a good quality standard display screen.

  • Quality of the components

You can learn more about the quality of the ingredients provided to you by reading reviews from other buyers. The list below provides an overview of how many other online electronics enthusiasts have noticed after using them.

Now without further ad, let’s jump into the article and list the top and best DIY function generator kits you can buy.

Best Function Generator Kit 2020

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Top Function Generator: Reviews

1. KKmoon XR2206 High Precision Function Signal Generator DIY Kit

KKmoon XR2206 High Precision Function Signal Generator DIY Kit

First on our list is a DIY signal generator from KKmoon. This function generator is highly rated and reviewed. It uses the XR2206 IC which is very precise.

With a frequency range from 1 Hz to 1 MHz, it can also generate simple sine waves, triangular, square waves, and ramps, unit continuity waves.

The maximum barrier of this machine is 600 ohms. The maximum amplitude of the function generator is about 3V with 1% distortion.

It works with a 9-volt battery (not included in the box). PCB boards are all kept for easy component and packing. There’s also a small plastic box that holds it all and it’s a matter of tuning, it comes with 3 knobs to enable thicker and finer toning.

Components included:
  • Resistors
  • Capacitors
  • Alligator Clips
  • Prefabricated Circuit Board (no screen)
  • Plastic case
  • Knobs
  • User manual

Pros:

  • Affordable pricing
  • Good quality

Cons:

  • The plastic case is a little wobbly and fragile so handle it with care.
  • Custom waveforms have their issues
Letest Price on Amazon

 

2. Kuman 30MHz DDS Arbitrary Signal Waveform Generator Counter

Kuman 30MHz DDS Arbitrary Signal Waveform Generator Counter

First on our list is a DIY signal generator from KKmoon. This function generator is highly rated and reviewed. It uses the XR2206 IC which is very precise.

Frequency range from 1 Hz to 1 MHz, it can also generate simple sine waves, triangular, square waves and ramps, unit continuity waves.

The maximum barrier of this machine is 600 ohms. The maximum amplitude of the function generator is about 3V with 1% distortion.

It works with a 9-volt battery (not included in the box). PCB boards are all kept for easy component and packing. There’s also a small plastic box that holds it all and even when it comes to tuning, it comes with 3 knobs to enable coarse and fine-tuning.

Components Included:

  • Resistors and Capacitors
  • Alligator Clips
  • Prefabricated Circuit Board (Without Screen)
  • Plastic case for housing the kit
  • Knobs
  • A 10P male to the male jumper wire
  • 100mm length and 3.0mm size Philips screwdriver
  • A user manual

Pros:

  • Great for small to mid waveforms
  • Easy to assemble and start using

Cons:

  • The screws provided sometimes are not enough
  • Difficulty creating custom waveforms
Letest Price on Amazon

 

3. KKmoon Mini DDS Digital Synthesis Function Generator DIY Kit

Next on our list is another KKmoon product. This time, it’s a mini digital synthesis function generator DIY kit instead of the one mentioned above.

The best thing about this DIY function generator is that it comes with its own screen (which doesn’t have a lot of analog DIY kits). The screen is manufactured in the PCB board which is provided.

Once built, the product can operate in fixed frequency mode (CW), servo single pattern (servo), and swap mode (sweep).

Output types are as common as analog models, including Sana, Triangle, Positive and Negative Southeast, Stairs (Positive and Negative), and other customized view forms.

Control the external signal using the trigger function, adjust the phase size after loading from the PC, and much more. (No nervous breakdown as it is punched in the head). The maximum frequency and amplitude of this generator is 1 MHz.

With servo signal format, you can adjust the support positions with great flexibility. Work back and forth.

Components Included:

  • Capacitors and the other minor circuit elements
  • PCB with screen
  • Buttons and other minor equipment of the DIY kit
  • Set of alligator clips
  • User guide cum building manual

Pros:

  • A DIY digital frequency generator kit
  • Multiple modes of operation
  • Control the signal using digits instead of unstable knobs

Cons:

  • Could improve the menuing system.
Letest Price on Amazon

 

4. Kuman Function Generator DIY KIT by JYE Tech FG085

Kuman Function Generator DIY KIT by JYE Tech FG085

The JYE Tech F5085 is a DIY digital function generator with a command-like mini DDS DIY digital function generator via KKMON we listed above.

It also comes with a small screen and can do everything via DDS Money. It has a simple setup with all the holes drilled in the synthetic circuit board.

It can generate square, sign, ramp, stairs, and triangular waveforms such as continuous waveforms and it can also create custom user-defined custom view forms. The amplitude and frequency range of this frequency generator is 1 MHz which is similar to a DIY analog frequency generator.

It also has servo control which does not have analog devices. Because it is a digital device, the function generator has press buttons instead of knees that is a great convenience and makes the process easier to use.

The Assembly Guide contains detailed instructions on assembly and use. However, the product has been reported to have electrical problems.

Components Included:

  • PCB with an integrated mini screen
  • Resistors, Capacitors, and all the micro components required for the circuit completion
  • Press buttons
  • Output and Power supply cables
  • User manual

Pros:

  • A digital function generator that is easy to use
  • Great fit and has no improper fit issues like most DIY function generator kits

Cons:

  • Has power issues while turning it on
  • Pricing
Letest Price on Amazon

 

5. Walmeck XR2206 High Precision Function Signal Generator DIY Kit

Walmeck XR2206 High Precision Function Signal Generator DIY Kit

Valmet is a DIY analog function generator based on the XR2206 high precision IC. This frequency range can produce simple sine, triangle, and square waves from 1Hz to 1MHz

The amplitude and frequency of the function generator can be adjusted using knobs with the help of fine-tuning and coarse tuning.

Like most analog kits mentioned in this list, the kit is simple and easy to build. It comes with all-perforated components that make assembly and installation easy as well as installing a small Lego structure.

The generator operates on a 9 or 12-volt power source which is usually a battery (not included in the package).

Components Included:

  • PCB Board (no screen)
  • 3 Knobs for coarse and fine-tuning
  • XR2206 IC, Resistors, capacitors and other micro components
  • Glass case to place the entire finished circuit in
  • User manual

Pros:

  • Very affordable pricing
  • High-quality components
  • Great performance

Cons

  • Limited waveforms
Letest Price on Amazon

 

6. HiLetgo 2pcs ICL8038 Monolithic Function Signal Generator DIY Kit

HiLetgo 2pcs ICL8038 Monolithic Function Signal Generator DIY Kit

All the DIY function generators mentioned in the list so far are based on XR2206 IC. HelitGo monolithic function is based on signal generator module ICL8038 IC

The ICXR2206 has a maximum frequency range of 1 Hz to 1 MHz, while the ICL 8038 has a modest frequency range of only 50 to 5 kHz. This makes it ideal for wavelengths. (Provided the display length is large)

The uniform VCC voltage for this frequency generator is approximately 22 volts and the input voltage is standard 12 volts (batteries not included and 9-volt batteries may not work).

Function generators come in a pack of two and do not include manual/schematic.

Components included:

  • 2 Sets of function generator PCB
  • Resistors, capacitors and all the other micro components needed for the installation
  • ICL8038

Pros:

  • Comes in a pack of 2
  • Very easy to build
  • Given the low-frequency range, it can be used for high wavelength waveforms (provided larger display screen)

Cons:

  • Not so ideal for larger frequency requirements
Letest Price on Amazon

 

7. KKmoon DDS Function Signal Generator Module DIY Kit 

KKmoon DDS Function Signal Generator Module DIY Kit
The last KD function on our list is the signal generator kit which is from KKmon but unlike its previous version, it comes with a small mini 2-inch screen so that a screen can be made to view the input.

It can produce basic sine waves, square waves, ortho waves, and triangular waves. It has a very high output speed of 8MHz. Dimensions and offsets can be varied using thick and fine-tuning with the knobs provided to the kit.

Frequency adjustment can be made in steps of 1, 10, and 1000 MHz. There’s also an intuitive 5-button keypad to toggle in the instructions. Easy to build and install, schemes for installation are provided in the link up to the free Dropbox link.

The kit has 2 outputs. One is for the DDS signal and the other is for a high-speed square signal. It can also restore the last frequency state when you turn off the power and back up.

Components included:

  • PCB with a 2 x 16 sized mini screen
  • Resistors, capacitors and other micro components needed to finish the circuit

Pros:

  • Comes with a screen
  • Neatly cut and easy to assemble kit

Cons:

  • Lacks proper information regarding the IC
  • Does not have an enclosure box
Letest Price on Amazon

 

Wrapping it up

The KKmoon XR2206 High Precision Function Signal Generator is a great choice because it comes with a good cut PCB, components that fit you and give you smooth function. While it may not be able to generate custom waves, it definitely threatens you for the deer and is easily one of the best kits out of the DIY function generator out there.

Please note that due to the extremely affordable nature of these kits, do not expect highly precise or versatile WAV form output as professional CRO machines (read: Best Signal Waveform Generator)

So those were our choices. We hope it covers everything you are looking for and if you have any further questions about electronics or electrical components, DIY kits, or anything like that, Feel free to write to us in the comments section below. Our team will rewrite you as soon as possible.

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