An ATtiny13 is more than sufficient to control almost any number of NeoPixels via an IR remote. The NeoController was originally developed as a tester for 800kHz NeoPixel strips. Since there was still so much flash left in the ATtiny13, an IR receiver was integrated so that some parameters can be controlled with an IR remote control. In this way, it is also suitable as a simple and cheap remote-controlled control unit for NeoPixels. Due to its small size (21.6mm x 11.4mm), it can be soldered directly to the LED strip without any problems. The power supply via a USB-C connection enables currents of up to 3A. There is still more than a third of the flash memory left for additional ideas.
I'm building an audio amplifier. These are the project requirements:
- Type of Amplifier: Class D (for energy efficiency).
- Input Source: Line-level input from a standard audio source, e.g., mobile phone or PC.
- Output Power: 10W per channel (for a stereo setup).
- Number of Channels: 2 (stereo output).
- Distortion: Total Harmonic Distortion (THD) of less than 0.1% at full power.
- Frequency Response: 20Hz to 20kHz.
- Power Supply: Operate from a single 12V DC source.
- Protection: Over-current and thermal protection for the amplifier IC.
- Connectivity: Standard 3.5mm audio jack for input and screw terminals for speaker outputs.
- Volume Control: A physical potentiometer for volume control.
- Indicator: An LED indicator that shows power ON status.
- Size Constraints: PCB size should not exceed 100mm x 100mm.
Consider every requirement individually when answering any question
Single-channel analog front-end for a 40 kHz air-coupled ultrasonic receiver using a 5 V single supply, buffered 2.5 V mid-reference, protection, gain, band-pass shaping, and ADC-ready output centered at VREF.
