The Connection between Arduino and AD7746

Welcome back, guys. Today, you’re having the chance to develop the combination of Arduino and AD4476. Let’s cut the long story short and jump straight to the point. First of all, you have to prepare a capacity sensor. Some of you are wondering, “Why should I need a capacitor sensor for this project?” Well, it’s because you have to make a device, which can be used to identify small capacitance (up to 4pF). Ok, it’s time to learn on how to connect the AD4476 to the Arduino and how to use it to sense touching… You have to understand that the I2C on Arduino is using analog pin 4 as SDA and analog pin 5 as SCL. In this case, you need to pull up some resistors for the I2C lines. As a result, you might want to add some 4.7k resistors to VCC. You have to pay attention that the AD4476 breakout board comes with two long lines. With this unique characteristic, it directs the sensing away from the logic and some “touch plate”. Since the marking 3.3V on… Continue reading

DIY a PIC Controller Interface with Nokia 1100 LCD

Guys, no matter you believe or not, it’s a very obvious phenomenon that the mobile phone industry has been developed in leaps and boundaries, especially in the past few decades. As one of the largest mobile phone manufacturers, Nokia Corporation is always standing in the lead of mobile phone niche, as they’re launching at least 12 different types of new mobile phone averagely each year! Unlike other mobile phones, Nokia’s mobile phones have successfully setting its own brand, which most of the mobile phones have better and clearer LCDs. Due to this reason, the Nokia LCDs have always becoming a popular choice for hardware projects from the past to present days! Today, we’re trying to DIY a PIC Controller Interface with Nokia 1100 LCD. Why we choose the Nokia 1100 LCD? Well, it is because it’s the cheapest and easy to be interfaced with many programs. Basically, the controller that being used in this project is PCF1884 PCF8814, and it’s not I2C. Even though the chip is I2C capable, but this LCD doesn’t use that mode at all. The VDDI… Continue reading

The S.M.A.R.T. HVAC Monitor!

Many people always claimed how smart and intelligent they’re in the electronics niche. If you’re one of those that have the talent, then would you dare try to create this S.M.A.R.T. HVAC monitor? As already mentioned earlier, an HVAC monitor is a project that involved making a S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) Thermostat. It has the ability to access the internet without any further modification! Well, this project had already combined several elements of embedded electronics, and it keeps on the theme of Home Automation. By using the S.M.A.R.T. HVAC monitor, you’ll have the chance to control and monitor the HVAC system via the web. Furthermore, it could be easily interfaced with most commercial and residential systems. It is important to keep the furnace in working conditions. This is why you might need to partner with Furnace Repair Whitby. The project is based on a PIC18F452, which is capable of using the standard 2-wire hardware I2C. To be honest, you’ve to figure out the way to overcome the small downside here, as these pins were not made available on… Continue reading

Wiimote Firefighting Robot is Beyond Your Imagination!

Can you imagine what the robot is going to look like, if you build it with the Wiimote and I2C? Well, if you want to find out the truth, then it’s about time to have some real fun here… To be honest, this is a very cool project, where the Wiimote can be used to make a perfect control system for a firefighting robot. Don’t underestimate the Wiimote, as it able to send and receive Bluetooth commands instantly. Thus, many home hobbyists starting to use it, as it could be an ideal choice for low cost Bluetooth transceiver! Instead of the above feature, it also has IR sensor that can detect a candle and a Bluetooth transceiver to communicate back to a host computer. This means that the Wiimote will use the IR sensor to find the location of candle. It transmits the sensor reading back to the host computer over Bluetooth. For your information, the C program running on the host computer is reading the sensor data and sends command back through Bluetooth to the Wiimote. Since the Wiimote… Continue reading

Nokia 1100 LCD and PIC Interface – The Best Combination That You Can Think About

Did you have an old Nokia 1100 cell phone that keeps lying in the drawer, but you just don’t know what to do about it? Well, guess what! Is time to show off your creativity by combine the Nokia 1100 LCD with the PIC Interface (Yeah, it sounds like a cool idea, isn’t it?). Before you starting the project, you have to make sure that your old Nokia 1100 LCD screen is in a good condition (Well, it would be better if the screen did not have any scratches). First thing first, please apply the Nokia 1100 LCD screen with a PIC, which well written in Microchip C on demand. As you can see, the microcontroller is a PCF8814 and its not the I2C. Although the chip us I2C capable, but the LCD doesn’t use that mode. In addition, the VDDI input can be used if only the I/O levels are different from the LCD supply voltage itself. The LCD supply voltage is 2.8V, even the VDDI id is in 1.8V. For this case, the LED driver as per the… Continue reading