Category: Arduino

Using an nRF24L01 Module to Scan the 2.4GHz Frequency Range

nRF24L01

There is a lot of electrical ‘noise’ all around us that we can’t see or sense as humans. However, in this day and time we have a great number of electronic devices which can sense what we can’t. Actually, it is these vary same electronic devices in most cases which are the cause of all …

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Arduino Galileo

Arduino Galileo

I have been experimenting lately with the Arduino Galileo from Intel. It is not a new Arduino board as it was introduced back in October of 2013. This Arduino has an Intel Quark single-core 32 nm X1000 SoC with a clock rate of up to 400 MHz.  It has several interfaces, including PCIe, UART, I2C, Fast Ethernet, …

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A Python script to run the Arduino MiniPirate Sketch

A while back I wrote about the BusPirate. You can view that post here. In it, I mention an Arduino sketch called the “MiniPirate” which allows you  to try some of the functions of the BusPirate on an Arduino. Over time, I have found that sketch to be very useful. You can use it to …

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Arduino Leonardo WEB Server to Display Temperature and Humidity

Arduino Leonardo WEB Server to Display Temperature and Humidity

In a previous post titled Arduino Leonardo and SPI Communications, I documented how to connect the Arduino Leonardo to the ENC28J60 Ethernet module. This post takes things a bit further and adds a DHT22 Sensor. The Arduino Leonardo is used as a WEB Server to Display Temperature and Humidity information from the DHT22 sensor. The …

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Arduino Leonardo and SPI Communications

Arduino Leonardo and SPI Communications using the ENC28J60 ethernet module

I just found out that my favorite Arduino of choice (the Leonardo) has a problem with SPI  “Serial Peripheral Interface” communications (if you need to use the SS pin).  For SPI (which is bidirectional) , the following pins are normally used: SS – Slave Select – digital 10. You can use other digital pins, but …

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Nuqleo Zinq 7 Rooted for more flexible useage

Nuqleo Zinq 7 Graphic Image

I recently acquired a Nuqleo Zinc 7 Android Tablet. It looks like this: I couldn’t resist 🙄 as it was such a good price. It comes with an OTG cable and works great to attach and host your Arduino(s).  Also, a tablet such as this one makes apps easier to use (i.e. to see) as …

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Controlling an Arduino from an Android Phone or Tablet

Question: What do you get when you connect your Android Phone or Tablet with a USB-OTG cable and connect that into another USB cable connected to an Arduino?   Answer: A easy way to program and/or control your Arduino. This is a handy way to control (and/or re-program) your Arduinos in the field where it …

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ESP8266 Wi-Fi Module Revisited

ESP8266 Reset Circuit Fritzing Image

A while back I posted some information about the ESP8266 Wi-Fi Module. You can view that post here. I mentioned that for testing it, an Arduino with multiple hardware serial ports would be ideal. Well, I just got an Arduino Leonardo which matches that criteria. Here is how I hooked it up:   you can …

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Arduino Weather Station

DHT11

With just a few sensors, one can determine a lot about the weather.                   The BMP085 can be used to sense barometric pressure and temperature and the DHT11 can be used to sense humidity and also temperature. Here is what they look like attached to a mini …

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Measuring Light Intensity

BH1750 Sensor

Any camera buffs out there? Sometimes it is handy to be able to measure the amount of light at a particular spot. This is needed sometimes so you can adjust your camera to take the ‘perfect’ picture. Or perhaps you are calculating the amount of solar energy your solar panels will be producing given the …

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