Arduino powered voltmeter and temp gauge

For a while I have been looking for a way of getting a reading of main and leisure battery voltage, and inside and outside temperature in the van. I spent ages on researching and found some bits here and there that might help, but nothing to do the whoe job, and nothing really satisfactory, until finally I found a link to the Arduino website. Never having heard of it before, I did a bit of reading and it se ...

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Arduino Vacuum Gauge Display

Initial testing. Ignore the humidity sensor, that was for something else. The vacuum gauge outputs 0-10VDC. This had to be changed to a 0-5VDC range using a potential divider so it was compatible with the Arduino. Initial build used a 10k pot in place of a vacuum gauge to make it simpler. The OLED screen simply plugs in over the arduino which made for a nice compact board. A custom pcb would've looked nicer ...

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Huge List of tutorials & Components based resources & info

 glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A ACCELEROMETER: tutorial on using the Memsic 2125 accelerometer with Arduino/Freeduino ACCELEROMETER: another post on using the Memsic 2125 Rad*o Sha*k variant accelerometer with Arduino/Freeduino ACCELEROMETER: article on using the LIS3LV02DQ 3-axis accelerometer with Arduino/Freeduino ACCELEROMETER: an excellent article on using the ADXL330 wi ...

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Water Flow Gauge using Arduino

Measuring the consumption of a resource that has units by volume can be more tricky than it sounds. Use of resources such as water, gas, and even electricity is typically measured by gauges that determine either instantaneous flow rate or cumulative volume over time. Both techniques have problems: measuring flow rate at frequent intervals allows you to do time-based reporting and generate a graph of how the ...

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