sparkfun/qwiic_spectral_sensor_as726x

Qwiic breakout for the AS7261/AS7262/AS7263 spectral sensors from AMS.

SparkFun Qwiic Spectral Sensor AS726X

SparkFun Spectral Sensor Breakout - AS7262 Visible (Qwiic) (SEN-14347)	SparkFun Spectral Sensor Breakout - AS7263 NIR (Qwiic) (SEN-14351)

This is the hardware repo for the AS726X Spectral Sensor. The AS7262 version detects wavelengths in the visible range while the AS7263 version detects wavelengths just below the visible range, in the Near Infrared (NIR) range.

Repository Contents

• /Enclosure - Enclosure files
• /Firmware - Example code
• /Hardware - Eagle design files (.brd, .sch)
• /Libraries - Libraries for use with the AS726X
• /Production - Production panel files (.brd)

Documentation

• Library - Arduino library for the AS726X.
• Hookup Guide - Basic hookup guide for the AS726X.

Product Versions

• SEN-14347- AS7262 Visible Spectral Sensor
• SEN-14351- AS7263 Near Infrared Spectral Sensor

Version History

• V1.0.0 - Initial Release

License Information

This product is open source!

Please review the LICENSE.md file for license information.

If you have any questions or concerns on licensing, please contact technical support on our SparkFun forums.

Distributed as-is; no warranty is given.

• Your friends at SparkFun.

qwiic_spectral_sensor_as726x's Issues

I2C Error On ESP8266

Hi,
I connected the AS7263 Sparkfun board to a wemos d1 mini via I2C, but when uploading an example sketch, I get only 'I2C Error'. I tried different boards (Leonardo, Micro) as well, but I get the same error. I connected 3v3 to the 3 Volt pin, SDA to SDA, SCL to SCL and GND to the GND pin of the arduino.
I uploaded an I2C Scanner Sketch, but it can't find the board as well.
Looking forward for any help! Thanks

Calibrated and un-calibrated data

I am using an AS7263 and was trying to do a comparison with the calibrated and uncalibrated data however both seem to have exactly the same output?

The other issue I am seeing is that when using sensor.printMeasurements(); the results are a reading with 2 decimal places however when using sensor.getR() there are no decimal places.

Incompatible with Artemis

Board isn't working with Artemis. I'm not entirely sure where it's failing but there's a handful of issues with this lib that might be part of it:

• Don't Wire.begin inside a library
• Don't Serial.print inside a library
• Create functions called setGain(), setMeasurementMode(). Don't pass to begin.
• Consider an .available() function if sensor takes time to take measurement. Don't write blocking code if possible.

Nits:

• Re-write example one to return sensor values. Let user print what they want.
• Please expand on the library.properties paragraph.
• Please name library with what it does (I recommend "SparkFun AS726x Spectral Sensor")

Led no ir source

I have had a look at the schematic for the AS7263 NIR spectral sensor and it uses a luxeon 3014 LED, however page 6 of the datsheet https://lumileds.com/wp-content/uploads ... S208-L.pdf shows that it does not emit light at 860nm, however the sensor says it can record light at 610, 680, 730, 760, 810 and 860nm - https://www.sparkfun.com/products/14351 is this just using ambient light?

Many thanks

I2C_AS72XX_SLAVE_STATUS_REG returns 0x82

Normally the device works without problems, but after some hours of continuous operation, the device stops.

I noticed that reading the I2C_AS72XX_SLAVE_STATUS_REG returns 0x82 no matter what. Therefore, the condition if ((status & I2C_AS72XX_SLAVE_TX_VALID) == 0) is never met in the virtualReadRegister operations.

Is there a way to 'soft reset' the device without using the virtual register operations?

A hard reset normally fits the issue, but it comes back at some point.

TROJAN Exploit in repository: File "Firmware/Firmware for AT25SF041/Windows GUI for EEPROM Programmer.zip"

The file "Windows GUI for EEPROM Programmer.zip" found in the folder Firmware/Firmware for AT25SF041 (links to folder not file) is flagged as a trojan virus on virus total.

It has a number of concerning behaviors including that it appears to capture keystrokes and communicates with servers in China. It seems to attempt privilege escalation, can install executables, and attempts to detect sandboxes and has protections against reverse engineering.

AS7262 firmware > AT25SF041 Chip Size

Hi folks, The firmware provided for the AS7262 can't fit on an AT25SF041. Flashrom complains the image is > Chip size.
Could the file be updated with a 512k version>
Using flashrom on Raspbian Stretch