NMEA 2000 sensors for M5 atomS3-lite
- m5stack atomS3-lite: https://shop.m5stack.com/products/atoms3-lite-esp32s3-dev-kit
- m5stack ATOMIC PortABC Extension Base: https://shop.m5stack.com/products/atomic-portabc-extension-base
- m5stack CANBus Unit (CA-IS3050G) https://shop.m5stack.com/products/canbus-unitca-is3050g
- m5stack ENV III Unit with Temperature Humidity Air Pressure Sensor (SHT30+QMP6988) https://shop.m5stack.com/products/env-iii-unit-with-temperature-humidity-air-pressure-sensor-sht30-qmp6988
- Waterproof ABS Plastic Electronic Enclosure Box Ip68, Clear Cover, Hinged with Base Plate and mounting brackets
- Panel mount NMEA-2000 connector with pig tails. M12 5 Pin Male Connector Cable, A Coded Straight Back Mount Cable Waterproof Male Aviation Socket UnShielded Electrical Cable IP67 Sensor Receptacle Brand: FOWIUNYE https://www.amazon.com/Connector-Waterproof-UnShielded-Electrical-Receptacle/dp/B0CB6SCTJ1
- Cable glands
- M3 standoffs
- USB-C to USB-A cables with small support tang on USB-C end
- m5stack grove cables
- m5stack grove to Dupont cables: https://shop.m5stack.com/products/grove2dupont-conversion-cable-20cm-5pairs
For pins used in connections browse through the firmware code: https://github.com/bareboat-necessities/bbn-m5-s3-n2k-i2c
M5Stack connectors are well color coded and pins are labeled on m5stack portABC.
This firmware is for env III sensor unit from m5stack. However by modifying the code you can easily create sensors you need. Take a look at the source code of BBN XDR sensors. That code and this example will give you enough pointers how to create your own N2K sensors (i2c, 1-wire, digital/analog etc).
For libraries used and their versions check .github/workflows/build.yaml
Long press side button on atomS3-lite till you see green to enter the mode for uploading firmware.
NOTE: /dev/ttyACM0 in the script below is for example. In your case device name might be different. You can find out what it is by inspecting differences in output of
ls -ltr /dev/tty*
with the device unplugged from USB and plugged into USB.
# shutdown signalk
sudo systemctl stop signalk
if [ -f bbn-flash-m5-s3-n2k-i2c.sh ]; then rm bbn-flash-m5-s3-n2k-i2c.sh; fi
wget https://raw.githubusercontent.com/bareboat-necessities/my-bareboat/refs/heads/master/m5stack-tools/bbn-flash-m5-s3-n2k-i2c.sh
chmod +x bbn-flash-m5-s3-n2k-i2c.sh
./bbn-flash-m5-s3-n2k-i2c.sh -p /dev/ttyACM0
Unplug and plug the device into USB to reboot.
stty -F /dev/ttyACM0 38400
socat stdio /dev/ttyACM0
Project Home: https://bareboat-necessities.github.io/
- Alarms Box: https://github.com/bareboat-necessities/bbn_alarms_A
- Engine Sensors Box: https://github.com/bareboat-necessities/bbn_sensors_hub_C
- Sensors Hub: https://github.com/bareboat-necessities/bbn_sensors_hub_AB
- NMEA N2K to USB: https://github.com/bareboat-necessities/bbn-m5-s3-n2k-usb
- Instruments Displays on esp32: https://github.com/bareboat-necessities/bbn-m5stack-tough
- Boat Heave Sensor: https://github.com/bareboat-necessities/bbn-wave-period-esp32
- I2C over USB for Linux: https://github.com/bareboat-necessities/bbn-i2c-over-usb