Input data line; connects to the TXD of the target microcontroller. Transmit Data
Modify the by adding an OP-amp (e.g., LM358) that senses voltage across a 0.1Ω shunt resistor on the output low side. Feed that voltage into the FB pin, overriding voltage control. You now have a 5A constant-current LED driver.
| Specification | Detail | | :--- | :--- | | | Typically an FTDI FT232RL (often a clone) | | Interface | USB to TTL Serial (UART) | | Connector | USB Mini-B (common variant) or USB-C in newer designs | | Logic Levels | 5V or 3.3V (selectable via jumper) | | Breakout Pins | 6-pin header (GND, CTS, VCC, TXD, RXD, DTR) | | Baud Rate | Up to 3 Mbaud (limited by driver and system) | | Operating System Support | Windows, macOS, Linux (virtual COM port or D2XX drivers) | | Dimensions | Small module, ~35 x 15 mm |
: Frequently used to upload firmware to microcontrollers that lack a built-in USB interface.
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Input data line; connects to the TXD of the target microcontroller. Transmit Data
Modify the by adding an OP-amp (e.g., LM358) that senses voltage across a 0.1Ω shunt resistor on the output low side. Feed that voltage into the FB pin, overriding voltage control. You now have a 5A constant-current LED driver. Yp-05 Schematic
| Specification | Detail | | :--- | :--- | | | Typically an FTDI FT232RL (often a clone) | | Interface | USB to TTL Serial (UART) | | Connector | USB Mini-B (common variant) or USB-C in newer designs | | Logic Levels | 5V or 3.3V (selectable via jumper) | | Breakout Pins | 6-pin header (GND, CTS, VCC, TXD, RXD, DTR) | | Baud Rate | Up to 3 Mbaud (limited by driver and system) | | Operating System Support | Windows, macOS, Linux (virtual COM port or D2XX drivers) | | Dimensions | Small module, ~35 x 15 mm | Input data line; connects to the TXD of
: Frequently used to upload firmware to microcontrollers that lack a built-in USB interface. You now have a 5A constant-current LED driver