is a common socket adapter board specifically designed to interface the
The primary utility of the YL-105 lies in its integration of the AMS1117-3.3 linear regulator. While many microcontrollers provide a 3.3V output pin, these outputs often lack the peak current capacity needed during high-speed data transmission, which can draw up to 13.5mA or more in bursts. By allowing a direct 5V connection, the YL-105 ensures that the transceiver has access to a more robust power rail, which the adapter then regulates locally to provide a steady, noise-free 3.3V. yl105 datasheet
| Feature | YL-105 (49E + LM393) | A3144 (Digital only) | Allegro A1302 (Pure analog) | |------------------------|-----------------------|----------------------|-------------------------------| | | Analog + Digital | Digital (latching) | Analog only | | Resolution | Infinite (analog) | 1 bit | Infinite | | Polarity detection | Yes (North/South) | No (magnet presence) | Yes | | Cost | $1-2 | $0.50 | $2-3 | | Best for | RPM, linear position, proximity | Simple door switch | Precise current sensing | is a common socket adapter board specifically designed