USB to TTL Control Module
3 Mbit/s serial with a 4 A controllable 5 V output
Overview
When a fixture needs both a serial control channel and a switched supply, two separate dongles is two things to fail. This module integrates both: a USB serial bridge and a controllable 5 V rail on one board.
The board carries a 32-bit MCU with a 12 MHz crystal, an original USB hub chip, FT232RL and CH340 serial controllers, plus power, status, and RX/TX indicator LEDs. Serial baud rate goes up to 3 Mbit/s.
The 5 V output is rated at 4 A drive capability, subject to the 500 mA limit imposed by the USB host port — so the full 4 A is available when powered appropriately rather than drawn through an unpowered hub.
Specifications
Features
- Serial control and switched 5 V supply on one board
- 32-bit MCU with a 12 MHz crystal for stable timing
- FT232RL and CH340 cover both common driver ecosystems
- Power, status, and RX/TX indicators for fast fault isolation
- Serial baud rate up to 3 Mbit/s
- 4 A drive capability on the 5 V rail
Typical applications
- Fixture control and power sequencing
- Test system integration
- Serial bridge with switched supply
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