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Your cart is empty.Plastic housing, DC 5V working voltage, 2 pole terminals, convenient for connecting. They have good characters like small cubage, low wastage and high voice pressure.
Frequent ian
2025-08-19 17:18:43
Works great, I'll include some example code I found below. These are loud but they're not ear piercingly loud. Small enough to fit on a breadboard spanning 4 pins, with 2 pins between the lead and ground.Here's some code to get you started:// Buzzer example function for the CEM-1203 buzzer (Sparkfun's part #COM-07950).// by Rob Faludi// [...]void setup() { pinMode(4, OUTPUT); // set a pin for buzzer output}void loop() { buzz(4, 2500, 500); // buzz the buzzer on pin 4 at 2500Hz for 500 milliseconds delay(1000); // wait a bit between buzzes}void buzz(int targetPin, long frequency, long length) { long delayValue = 1000000/frequency/2; // calculate the delay value between transitions //// 1 second's worth of microseconds, divided by the frequency, then split in half since //// there are two phases to each cycle long numCycles = frequency * length/ 1000; // calculate the number of cycles for proper timing //// multiply frequency, which is really cycles per second, by the number of seconds to //// get the total number of cycles to produce for (long i=0; i digitalWrite(targetPin,HIGH); // write the buzzer pin high to push out the diaphram delayMicroseconds(delayValue); // wait for the calculated delay value digitalWrite(targetPin,LOW); // write the buzzer pin low to pull back the diaphram delayMicroseconds(delayValue); // wait againf or the calculated delay value }}
jim B.
2025-06-29 14:13:50
parts work very well, just not as loud as I wanted.
Matt
2025-06-19 13:01:08
I'm not sure what the sticker about really means. Are there applications where these need to be washed before hand? If so, wouldn't there still be unsanitary surface area under the sticker itself?I don't know, I've been thinking about this for far too long, but all I know is that these work well as a discovery buzzer for a lost quad. Works well with my F3 flight controller and 3.7v battery. Clear and loud even in windy environments, especially when less than 50 feet away. Indoors it's actually a bit too loud, so maybe keep a sticker handy to shut it up while you have it inside.
G. Taylor
2025-04-06 11:53:20
Simple, great value for 5 delivered for $3. Works well with Arduino Uno and PIR motion sensor
#
2025-03-03 15:53:31
These work great as sounders for home made Geiger counters. Just use a transistor switch connected to the pulse output of your design and it has a nice loud click, at least in my 9 volt design. Can also be driven, at less volume, by pulses from a cmos gate.
Luke V
2025-02-25 16:15:29
They're ok - don't last very long but they are cheap and easy to replace
Frank
2025-02-14 11:44:59
I've bought many of these as buzzers for my quadcopters. Never had a bad one. Every now then after a few crashes I'll get one that starts sounding funny and I swap it out. The longer pin is the positive and I believe it's marked on the case as well. The pins are easy to take solder which is a plus. They are loud for what they are and are a lifesaver of your quad goes down in tall grass or trees. These are 5v which is what the current flight controllers send for buzzer voltage. Make sure you keep the buzzer clear of any compass or video wires as you may see some interference when it's beeping.
Gentleman Farmer
2025-01-10 18:33:48
I needed buzzers for a school project. These had the shortest delivery time. They came. They buzz. The kids will be happy and so am I.
Customer
2024-11-20 11:47:35
Finally arrived
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