bluerobotics / lumen

Lumen Subsea LED Light with 9-48V operation, servo PWM input, 1500 lumen output, and daisy-chainability.

Lumen Subsea Lights

The Lumen Subsea Light is an underwater, pressure-rated LED light capable of outputting over 1500 lumens.

The schematic and board layout are designed in EagleCAD.

Lumen Subsea Light Hardware

Features

• 1500+ lm output
• Onboard microcontroller (ATTiny45) for programmable behavior
• Multiple signal input types:
  • Standard servo PWM input signal (1100-1900 microseconds)
  • Direct duty cycle control (with solder jumper)
  • On/off control with no signal needed by connecting signal wire to power
• Daisy-chainable to allow multiple lights from a single cable
• Thermistor temperature feedback and overheating protection
• 6-48V input range
• 0-2.5A LED output

Software

The software running on the onboard microcontroller is available in the Lumen-Arduino directory and can be installed with the Arduino IDE and an AVR-ISP programmer.

License

The Lumen Subsea Light Hardware Design is released under the MIT License.

Revision History

0.0 - Under development

0.1 - First production version

0.11 - First production version w/ software

0.20 - Lumen R2 launch firmware

lumen's Issues

Change fuse high byte to turn on Brown-out Detector

Change programming script to set the High Fuse Byte to 0xDD instead of 0xDF to turn on the Brown-out Detector. This will set the BOD bits to 1,0,1 which sets the BOD level at 2.7 V.