A self-contained “retro PC” platform built around the ESP32, exposing classic PC-style IO: VGA video, PS/2 keyboard/mouse, audio-out to an onboard speaker, microSD storage, plus USB-C for power and USB-UART for programming/debug.

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

The PAM8610, manufactured by Power Analog Microelectronics, is a high-performance, 10W (per channel) stereo class-D audio amplifier featuring DC volume control. This component is designed to deliver low THD+N (0.1%), low EMI, and high efficiency (>90%), making it ideal for high-quality sound reproduction in a variety of applications such as flat monitor/LCD TVs, multi-media speaker systems, DVD players, game machines, boomboxes, and musical instruments. Operating off a 7V to 15V supply, the PAM8610 distinguishes itself with its 32-step DC volume control ranging from -75dB to 32dB, shutdown/mute/fade functions, and comprehensive protection against overcurrent, thermal, and short-circuit conditions. Its low quiescent current, pop noise suppression, and minimal external component requirement further enhance its appeal for compact and efficient audio solutions. The PAM8610 is available in a compact 40-pin QFN 6mm*6mm package, ensuring a small footprint for space-constrained applications. Compliance with RoHS standards underscores its environmental consideration. With its advanced features and high integration level, the PAM8610 offers a compelling option for designers seeking to incorporate robust audio amplification with fine-grained volume control in their electronic projects.

CalderaCORE carrier board with external TPA3255 EVM interfaces, including isolated board-edge speaker output screw terminals for SUB_L, SUB_R, MID, and TWT driver wiring.

A self-contained “retro PC” platform built around the ESP32, exposing classic PC-style IO: VGA video, PS/2 keyboard/mouse, audio-out to an onboard speaker, microSD storage, plus USB-C for power and USB-UART for programming/debug.

A self-contained “retro PC” platform built around the ESP32, exposing classic PC-style IO: VGA video, PS/2 keyboard/mouse, audio-out to an onboard speaker, microSD storage, plus USB-C for power and USB-UART for programming/debug.

A self-contained “retro PC” platform built around the ESP32, exposing classic PC-style IO: VGA video, PS/2 keyboard/mouse, audio-out to an onboard speaker, microSD storage, plus USB-C for power and USB-UART for programming/debug.

Wi‑Fi/BLE Dual-Mode Portable Stereo Speaker with DSP and Smart Battery Management

20-W MONO CLASS-D AUDIO POWER AMPLIFIER with terminal block connector for a speaker #audioDevices

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

20-W MONO CLASS-D AUDIO POWER AMPLIFIER with terminal block connector for a speaker #audioDevices

This project uses an Arduino Mega microcontroller connected to 5 flexible sensors and a mini speaker with position and acceleration sensors to create an interactive device. It uses AMS1117 voltage regulators to provide regulated power, a CH340C for USB communication, and includes capacitors and resistors for circuit balance. Ideal for IoT and edge computing tasks. #referenceDesign #project #ArduinoMega #flexSensors #miniSpeaker #motionSensor #IoT #edgeComputing #reusable #module #Arduino #template

I would like your input on it as well ...so basically it is an earpod with a charging box.. the earpod has bluetooth and speaker.. the charging box however has a GPS and, memory card.. along with the charging modules ... The idea is to have this device play audio which can be pre saved in the memory card o the charging box via an app on the phone which can be connected to using Bluetooth.. Now the way the device works is that based on the Gps coordinates the device plays certain pre-loaded audios

Lethal Company Pro Flashlight [Find the acompanying button board here](https://www.flux.ai/markwuflux/lethal-company-pro-flashlight-button-board) TODO: ADD A BUTTON!! -Ultra bright -Makes click noise from speaker -Wirelessly transmits battery life (maybe use Ubo to receive this) -Drive a SST-40 Chinese LED I want this thing to be super bright! The brighter the better, but keep it simple. These LEDs will draw a lot of power, so we need some sort of CC source. It doesn't have to have high bandwidth. I am thinking about a DIY microcontroller buck converter with PID duty cycle control.

20-W MONO CLASS-D AUDIO POWER AMPLIFIER with terminal block connector for a speaker

+12V ---- VCC (TL494) GND ---- GND (TL494) |---- RT (10kΩ) |---- CT (0.01uF) CT --| | OSC OUT ---------- DTC ---------- GND (conectar a tierra) FEEDBACK ---|--(Divisor Resistor o Capacitor) | |--------------(Entrada de Audio) OUT_A ------------- GATE Q1 (IRF540N) OUT_B ------------- GATE Q2 (IRF540N) Q1 (D) --- L ------------------- Speaker Q2 (D) --- GND Capacitor de acoplamiento y desacoplamiento

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

The PAM8610, manufactured by Power Analog Microelectronics, is a high-performance, 10W (per channel) stereo class-D audio amplifier featuring DC volume control. This component is designed to deliver low THD+N (0.1%), low EMI, and high efficiency (>90%), making it ideal for high-quality sound reproduction in a variety of applications such as flat monitor/LCD TVs, multi-media speaker systems, DVD players, game machines, boomboxes, and musical instruments. Operating off a 7V to 15V supply, the PAM8610 distinguishes itself with its 32-step DC volume control ranging from -75dB to 32dB, shutdown/mute/fade functions, and comprehensive protection against overcurrent, thermal, and short-circuit conditions. Its low quiescent current, pop noise suppression, and minimal external component requirement further enhance its appeal for compact and efficient audio solutions. The PAM8610 is available in a compact 40-pin QFN 6mm*6mm package, ensuring a small footprint for space-constrained applications. Compliance with RoHS standards underscores its environmental consideration. With its advanced features and high integration level, the PAM8610 offers a compelling option for designers seeking to incorporate robust audio amplification with fine-grained volume control in their electronic projects.

Remote Power Supply with built in monitoring and local sound based alarms. -4A CC output -2.5W Speaker Output

20-W MONO CLASS-D AUDIO POWER AMPLIFIER with terminal block connector for a speaker

Using the Raspberry Pi Pico microcontroller, I was able to design a hearing aid with volume control. The components and a description of why they were used: MCP3008 - CONVERTS ANALOG AUDIO SIGNALS INTO DIGITAL DATA CONVERTED BY THE MICROCONTROLLER MCP4725 - CONVERTS DIGITAL AUDIO SIGNALS TO ANALOG SO THE AUDIO CAN BE OUTPUTTED THROUGH A SPEAKER LM358 - USED TO AMPLIFY WEAK SIGNALS IN THE HEARING AID, REMOVES UNWANTED FREQUENCIES SPU0410LR5HQB - THIS COMPONENT IS A MICROPHONE, SPECIFICALLY CHOSEN BECAUSE IT IS OMNIDIRECTIONAL AND CAN CAPTURE AMBIENT SOUNDS, IT IS A SMALL COMPONENT PERFECTLY USED FOR NOISE REDUCTION, ASSISTING IN CAPTURING CLEAR AUDIO PAM8302AASCR - EFFICIENTLY AMPLIFIES AUDIO, AUDIO SIGNAL FROM DAC (VOUT) IS FED INTO THE INPUT OF THE AUDIO AMPLIFIER, WHICH OUTPUTS IDEAL FREQUENCY AUDIO CEM-1203(42) - SPEAKER WHICH OUTPUTS THE AUDIO AMPLIFIER MODIFIED FEATURE: POTENTIOMETER - WITH THE CCW CONNECTED TO GND, CW CONNECTED TO VDD, WIPER CONNECTED TO PIN 27 OF THE MICROCONTROLLER, THIS FEATURE IS A VOLUME ADJUSTER, WE ARE ABLE TO FULLY TURN OFF AND ON THE VOLUME BY ADJUSTING THE HEARING AID FOR THE IDEAL AUDIO OUTPUT

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠