Tagged Questions

0
votes
1answer
131 views

High power pulse generator

I'm designing a relatively high power pulse generator. Basically I have a microcontroller generating a clean square wave (0-3.3 V or 0-5 V) which then goes into my amplification circuitry. I want to ...
0
votes
1answer
205 views

Help in designing a speaker driven by an LM386

I'm trying to design a circuit which produces a 17KHz pure sine wave from a speaker using the following components: PIC16F1783 (microcontroller with DAC) an LM386 amplifier and an 8-Ohm 1W speaker. ...
1
vote
1answer
90 views

Whitenoise Signal from Microcontroller Amplification IC Advice

I'm looking to hook up a piezoelectric PZT to a microcontroller that will be providing a white noise signal. However, the 5ish volts that the microcontroller can spit out isn't strong enough to ...
0
votes
2answers
168 views

Is it possible to mod a class 2 bluetooth device to work as a class 1 device?

I have two Microcontrollers which communicate over a bluetooth link (serial link, like RN-42). So far so good. Unfortunately the device is listed as a class 2 device and I noticed that the distance is ...
2
votes
3answers
461 views

Does this amplifier work with 5V?

I'm using an Arduino to read an analog signal from an electret microphone. Here is the circuit: But I will be powering it with 5V from the Arduino, So would this work okay? Thanks!
2
votes
3answers
653 views

Picking a DAC for an audio amplfier

I'm trying to use a specific audio amplifier, TPA3111D1, to power a 10 watt speaker from a microcontroller. I would like to generate sound from a microcontroller that doesn't have a built in DAC, so ...
2
votes
2answers
2k views

Input sound to arduino via microphone jack

I'm designing a gadget which will light up LEDs using a microcontroller. I'd like for it to respond to an audio signal, so I was thinking there are a lot of ways I could do it: If I can accurately ...