557nm LED board

557nm blue light LED board for use with the Open Colorimeter with STEMMA QT for connecting to the Adafruit STEMMA QT TSL2591 High Dynamic Range Digital Light Sensor board via a 4-pin cable and JST SH connectors and 3.3V Vcc. 

Features

• Open hardware. KiCad design files @ https://github.com/iorodeo/i2c_led
• Dimensions: 25.4 mm x 20 mm x 1.6 mm
• Two 4-pin JST SH connectors (QWIIC/STEMMA QT)
• Four M2.5 through holes for mounting e.g. to a cuvette holder
• 0603 surface mount LED and resistor
• Peak wavelength: 555 nm
• Dominant wavelength: 555 nm
• Bandwidth: 30 nm
• Viewing angle: 120°
• Vcc=3.3V
• Mfr Part #: APT1608PGW

Note, when operating the LEDs on the PyBadge's STEMMA connector you need to enable 3.3V operation by cutting/soldering the solder jumper to the right of the D3 connector.