The unit generates sine and trapezoidal waveforms so technically it makes sound it you hook it to a speaker. No complex waveforms, just tones

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Signal Generator Kit, XR2206 Precise Function Signal Generator Frequency Module Signal Generator DIY Kit Sine Triangle Square Output Adjustable 1Hz-1MHz, 9-12V DC Input (1)

Signal Generator Kit, XR2206 Precise Function Signal Generator Frequency Module Signal Generator DIY Kit Sine Triangle Square Output Adjustable 1Hz-1MHz, 9-12V DC Input (1)

Q: What would I use it for?

creates square wave ,sine and triangle wave forms but has no way to tell frequency so if you need that information you would need a frequency meter or a scope but is useful to tell if an amp is working at lower frequency with a speaker.

Q: How do i determine the polarity of c1, c3, & c4? there are no +/- signs on the pcb showing polarity.

No, those three are all electrolytics in my kit. The circuit board symbology shows a circle with one half open and one half shaded. Looking at the traces on the board, it appears that the pins associated with the shaded semicircles all are connected to the ground plane of the board but not sure. Can anyone confirm that the cathode/negative/short pin of the electrolytic caps goes toward the shaded side of the circle printed on the board?

Q: The frequency and amplitude on my XR2206 generator is slightly fluctuate. Is it normal,or some thing wrong with assemble?

That's not surprising. The design of the circuit is not terribly robust, so it's not unlikely that you may see some fluctuations. You may want to double check your component placement and your solder joints. Make sure you have the components in the right locations on the PCB. If you are seeing a regular, periodic fluctuation, that could be a sign of a low frequency modulating your output. If you have a loose or "cold" solder joint, it will not be making good contact with the circuit traces on the PCB and this may be causing issues.

Product ID: 439894510

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Details

Brand
Weewooday
Power Source
Battery
Style
Digital
Colour
Clear
Min. Operating Voltage
9 Volts (DC)

⚡1Hz-1MHz ultra-wide frequency range

📐Distortion <1% & flatness ±0.05dB for crystal-clear signals

🔧DIY kit with transparent case for hands-on precision

Description

⚡ Build precision signals, spark innovation!

MASTER YOUR WAVEFORMS - Generate sine, square, and triangle waves with professional-grade accuracy from 1Hz up to 1MHz.
PLUG PLAY POWER FLEXIBILITY - Operates on 9-12V DC input with standard 5.5 x 2.1mm power port—perfect for portable or bench setups.
CUSTOMIZABLE AMPLITUDE CONTROL - Adjust output amplitude up to 3V (sine/triangle) and 8V (square) for versatile testing scenarios.
PRECISION ENGINEERING IN YOUR HANDS - Less than 1% distortion and ±0.05dB flatness ensure your signals are clean and reliable for any project.
TRANSPARENT DESIGN TRANSPARENT ASSEMBLY - Clear casing lets you showcase your build skills while easily monitoring component placement and soldering quality.

The Weewooday XR2206 Signal Generator Kit is a portable, DIY-friendly function generator capable of producing sine, square, and triangle waveforms across a broad frequency range of 1Hz to 1MHz. Featuring less than 1% distortion and ±0.05dB flatness, it delivers professional-grade signal accuracy. Its transparent case design not only enhances assembly visibility but also adds a sleek, modern aesthetic. Powered by a 9-12V DC input, this compact 82g module is ideal for engineers, hobbyists, and professionals seeking hands-on control over waveform generation.

Specifications

Brand	Weewooday
Power Source	Battery Powered
Style	Digital
Colour	Clear
Min. Operating Voltage	9 Volts (DC)
Specification Met	IEC 61010-1, IEC 61326
Manufacturer	Weewooday
Country of Origin	USA
Model number	Weewooday_XR2206
Special Feature	Portable
Item Weight	82 g
Package Dimensions	14.4 x 11.99 x 1.8 cm; 82 g
Item model number	Weewooday_XR2206
Voltage	12 Volts, 3 Volts
Included Components	Signal generator DIY kit

Have a Question? See What Others Asked

What would I use it for?

How do i determine the polarity of c1, c3, & c4? there are no +/- signs on the pcb showing polarity.

Does it make sound??

The frequency and amplitude on my XR2206 generator is slightly fluctuate. Is it normal,or some thing wrong with assemble?

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