PRE-ORDER INFORMATION: HALSER is only available for pre-orders. Device shipments will begin in the first half of February 2026.
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HALSER is the Hat Labs Serial interface board: an ESP32-C3 device that makes connecting different NMEA-0183, RS-232 or plain UART serial interface devices to the NMEA 2000 or WiFi networks painless. Whether you want to interface wind instruments, AIS transponders or Victron VE.Direct devices, you can do that with this board - no additional hardware needed!
Sales package contents:
HALSER device
4-pin pluggable screw terminal for NMEA 2000 and power
2 pcs three-pin pluggable screw terminals for serial input and output
2 pcs jumper headers for configuring serial interfaces
Main design features:
Built around ESP32-C3, a powerful 32-bit microcontroller with 4 MB of flash
Wide-range 5-32 V power input with surge protection
One transmitting and one receiving RS-485 interface for bidirectional communication with NMEA 0183 devices (3-pin pluggable terminal block screw connectors)
One RS-232 interface for communication with legacy devices (3-pin pluggable terminal block screw connector)
One UART interface for general-purpose communication (3-pin pluggable terminal block screw connector). UART is 5V tolerant and the output voltage can be set to 3.3V or 5V with a jumper.
1-Wire interface (3-pin 2.54 mm header)
I2C interface with a 4-pin 2.54 mm header
USB type C interface for programming and serial communication
All above interfaces with proper electromagnetic compatibilty (EMC) design -- the device won't interfere with navigational devices or radio equipment
All available general-purpose input/output (GPIO) pins broken out to a separate header
Board designed to fit low-cost waterproof 100x68x50 mm enclosures
Only one serial interface may be set to receive at one time. All interfaces will transmit the same signal.
HALSER is a development kit style product. In particular, it does not come with any software pre-installed. Sample software will be made available, but support for any software development issues can only be provided via the discussion boards.
Enclosure and other connectors are for illustration only.
