What is it?

• This adapter is a USB-to-Serial bridge to program LoRaWAN-miniBrick, LoRaWAN-megaBrick, Arduino Pro-Mini, or any other Arduino compatible boards that allows similar code uploading and debugging.
• "It is more than just a bridge, its a powerful bridge". It allows you to power your 3.3V @ 300mA or 5V @ 500 mA project directly from the USB.
• It respects the USB device enumeration and has a 500 mA current limiting switch that protects your host USB peripheral in case of accidental short circuit.
• Micro-USB connector.
• TX and RX LED.
• The USB-to-Serial bridge is based on authentic FT231XS chip from FTDI.

Note

• The output signals (TX, RX, DTR, CTS) are 3.3V logic compatible irrespective of output voltage (3.3V or 5V) selected.

Why you need a Powerful USB-to-Serial Bridge?

• Almost all available FTDI based USB-to-Serial adapter (for example - adafruit-FTDI-friend, sparkfun-FTDI-Basic-3v3) rely on FTDI chip to power external board. But FTDI chip cannot source more than 50 mA of current. Although this limit is good enough to program MCU but not enough to test circuit which consumes more power. For example RFM95 transceiver module can consume close to ~120 mA when transmitting at high dBm, at this point your board will reset periodically if your circuit is powered from FTDI chip.
• I frequently use this board to power and debug my complete circuit before deploying the final battery powered project or otherwise.

Shipping Note

• The order includes fully assembled "Powerful USB-to-Serial Adapter" board.

Original Components

• All active components - FT231XS, Current-limiting power distribution chip and LDO - are purchased from Mouser Electronics

What makes it special?

• Dual supply (3.3V @ 300mA or 5V @ 500mA) USB-to-Serial bridge programmer.
• USB protection circuit.
• Low cost