3.6/3.7V Dual 18650 Rechargeable Lithium Battery Charger
sim7670c ic is good but it booting is very complication any other metod to connect 4G pius sms read and write
2A Dual L298N Motor Driver Module with PWM Control
MB27L2 - 27mm Loud Intermittent 1.5V to 15V DC
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A buzzer is a small yet efficient component to add sound features to our project/system. It is a very small and compact 2-pin structure hence can be easily used on breadboard, Perf Board and even on PCBs which makes this a widely used component in most electronic applications. There are two types of buzzers that are commonly available. The one shown here is a simple buzzer that when powered will make a Beep Beep Beep. Sound due to the internal oscillating circuit present inside it. But, the one shown here is most widely used because it can be customized with the help of other circuits to fit easily in our application.
Also check the MB35L2 - 35mm Loud Intermittent Buzzer from Robocraze. The buzzer operates within a voltage range of 1.5 to 15V DC, with good frequency response.
| Minimum sound level | 85db |
| Oscillation frequency | 4KHz ± 500Hz |
| Current consumption | Maximum 20mA |
| Operating voltage | 1.5 to 15 VDC |
| Tone | Interrupted 1 to 4/sec |
| Mounting | Flange Type |
| Wire/Lead length | 120mm 2 wire |
| Height | 16.5mm |
| Diameter | 32mm |
| Pitch | 38mm |
| Operating temperature range | 20 to 50 °C |