RainbowLink-V2 is a multi-functional USB protocol converter. Its core features are: 4 Independent Channels: Converts USB to 1x isolated RS485, 1x isolated RS232, and 2x TTL simultaneously.
RainbowLink-V2 is a multi-functional USB protocol converter. Its core features are: 4 Independent Channels: Converts USB to 1x isolated RS485, 1x isolated RS232, and 2x TTL simultaneously.
Connects to PC for communication and 5V power supply
3.3V, 5V and 12V power indicator lights
4-channel RX and TX communication indicator lights for TTL1, TTL2, RS485 and RS232
Power Output
2-channel TTL Communication Ports
System Ground
Power Output
Fully Isolated RS485 Port
Fully Isolated RS232 Port
GND2 / Isolated Ground
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| USB TYPE-C Port | Official table 2 row 1 | power | Connects to PC for communication and 5V power supply | |
| Power Indicator Light | Official table 2 row 2 | power | 3.3V, 5V and 12V power indicator lights | |
| Communication Indicator Light | Official table 2 row 3 | uart | 4-channel RX and TX communication indicator lights for TTL1, TTL2, RS485 and RS232 | |
| PWR OUT | Official table 2 row 4 | pin | Power Output |
UART
Confirm the data interface matches your host board.
Module pins: USB TYPE-C Port, Power Indicator Light, GND, ⑩, Communication Indicator Light, RS485(A). Schematik maps them to your board in the app.
9 VDC 1000mA regulated switching power adapter - UL listed visual preview
Adafruit PowerBoost 1000 Basic - 5V USB Boost @ 1000mA from 1.8V+ visual preview
MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual preview
DC-DC Automatic Step Up-down Power Module (3~15V to 5V 600mA) visual previewCompare wall adapters, buck regulators, buck-boost boards, USB-C PD barrel adapters and passive cables before treating them as interchangeable power supplies.
Power · Power supplies & regulators · 24 parts
9V Alkaline Battery visual preview
9V Battery Holder visual preview
9V Battery Snap visual preview
9V to Barrel Jack Adapter visual previewChoose batteries, holders, adapters and boost boards without mixing voltage class, chemistry, connector polarity, charging method or current delivery.
Power · Batteries · 21 parts
SparkFun Qwiic Pro Micro BoogieBoard visual preview9V to Barrel Jack Adapter visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual previewMicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual previewSort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.
Connectors & cables · Connectors · 28 parts
RGB backlight positive LCD 16x2 visual previewSparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
I2C 20x4 Arduino LCD Display Module visual preview
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display V2.0 visual previewCharacter LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.
Displays · TFT & LCD displays · 33 parts
| TTL1, TTL2 | Official table 2 row 5 | digital io | 2-channel TTL Communication Ports |
| GND | Official table 2 row 6 | ground | System Ground |
| 12V | Official table 2 row 7 | pin | Power Output |
| RS485(A) | Official table 2 row 8 | uart | Fully Isolated RS485 Port |
| RS232(B) | Official table 2 row 9 | pin | Fully Isolated RS232 Port |
| ⑩ | Official table 2 row 10 | ground | GND2 / Isolated Ground |