8r13n

Member Since: June 8, 2010

Country: United States

  • I’ve worked with a lot of spectrometers, etc. in the past. I had hopped that this would work as a spectrometer, it doesn’t. The filters are only somewhat effective.

    My first test involved using a UV LED. This LED only outputs light from ~290-~340nm. The AS7262 showed light coming in on all channels, including the 650nm (even though there was no green, yellow, orange or red light coming from my LED).

    This is the same problem you’ll experience using thin films like those used in popular PublicLabs projects (usually Rosco filters).

    This is still a cool device, probably good for something. And the signal quality is pretty decent (nice ADC S/N) but the readings are by no means accurate.

  • Thanks for the quick reply!

    In my case, since I’m using an ESP8266, I realize now I can just wire this module to two lines, and the NIR module to another two lines.

    But normally I’m working with hardware that has dedicated I2C pins and this would have been a problem. Please make the addresses different if possible.

  • So I bought this an the NIR version. Both have the same I2C address? How can I use them at the same time?

    EDIT: In my case, since I’m using an ESP8266, I realize now I can just wire this module to two lines, and the NIR module to another two lines. But normally I’m working with hardware that has dedicated I2C pins and this would have been a problem. Please make the addresses different! (Likely just a programming thing since I don’t see pins for it?)

  • …Yeah, so I bought this and the VIS unit. Seems like they have the same I2C address? Why? How can I use the two of these units together now?

  • Can I use this with LiPo batteries?

  • I can confirm this. I use this display and it’s big brother. Both allow you to update one line, a series of lines or the entire screen in a single SPI command. It’s trivial really.

  • STM32F4 needed the resistors, but it works great! I’m driving it with a Cerb40 II board from GHI.

  • One of the other micro motors you sell has a ratio of 298:1. Is this more precise or is that just the product name?

  • I’ll try it and report back. That link seemed to say they needed the resistors because their IO logic pins were ~4v. Stm32 is 3.3v :)

  • Does it make a difference if I’m using an STM32F4 to drive it? I won’t bit bang, I’ll be using the SDIO hardware feature of the chip? I have internal resistors, they’re not strong enough?

    I’ve been working with SD cards for a long time now using this chip. But they’ve always been on the same board.

No public wish lists :(