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  • Solar Powered WiFi Weather Station V2.0

    @Topspliff, can you explain to me where D7 is being defined? I understand it equates to the physical D7 on the board but the example code you have given doesn't define it in scope when I try to cherry pick the relevant lines.error: 'D7' was not declared in this scope #define ONE_WIRE_PIN D7Another question, for the line "sensors.begin();" what exactly is this line doing? And it can just go at the beginning of the setup function?

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  • Solar Powered WiFi Weather Station V2.0

    The VCC on the PCB should go to the 3Vo pin on the Adafruit BME board, bypassing the regulator on the board which will only lose you a bit of voltage and maybe make the sensor not work at low battery charge levels.The 3v out on the Adafruit will take 3v in? Won't that have to pass through the voltage regulator in reverse and possibly cause issues? Maybe be stopped by a diode?It is also valid to connect SDO on the sensor to Vcc, in which case the I2C address of the sensor will be 0x77. You probably do not need this but it allows you to have a second sensor connected.That's a good point. I do want to be able to utilize the additional ports like P2 for a DS18B20. This is a detail I would have missed if you didn't mention it.So my working pinout sounds like it should be like in the image I'...

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    The VCC on the PCB should go to the 3Vo pin on the Adafruit BME board, bypassing the regulator on the board which will only lose you a bit of voltage and maybe make the sensor not work at low battery charge levels.The 3v out on the Adafruit will take 3v in? Won't that have to pass through the voltage regulator in reverse and possibly cause issues? Maybe be stopped by a diode?It is also valid to connect SDO on the sensor to Vcc, in which case the I2C address of the sensor will be 0x77. You probably do not need this but it allows you to have a second sensor connected.That's a good point. I do want to be able to utilize the additional ports like P2 for a DS18B20. This is a detail I would have missed if you didn't mention it.So my working pinout sounds like it should be like in the image I've attached.

    Keith,Thank you so much for taking the time to clarify the inner-workings on this sensor and SPI vs I2C. I can't wait to get out the crimper and build a harness for this, and I will keep SDO -> SDO since it won't interfere with sensors I put on other channels.Best regards.

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  • Solar Powered WiFi Weather Station V2.0

    Topspliff: let me say on behalf on newbies like me, comments like yours are a godsend when we get stuck. I will solder a JST connector on the board and wire it accordingly.Cheers!

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  • jay-thomas followed Open Green Energy6 weeks ago
      • Solar Powered WiFi Weather Station V2.0
      • DIY All in One Solar Power Pack
      • ARDUINO SOLAR CHARGE CONTROLLER ( Version 2.0)