Membrane Keypads are what commonly seen to be used with various prototyping boards - black colored board with blue and red colored keys. Arduino Membrane Matrix Keypad Are Cheap, Versatile For Many Projects and Outweighs Work to Build Keypad From Push Buttons. Matrix keypad is any keypad arranged in matrices, which is an interface technique to interface inputs by dividing keys into columns and the … [Read more...]
Running Multiple LCD Displays On One Arduino UNO
Commonly we show example of getting started with LCD with one LCD and some sensor, like we have guide on Arduino Temperature & Humidity Sensor DHT 11 With LCD 1602A. We Can Easily Run Two to Four 16x2 LCDs On Arduino UNO. In This Article, We Will Supply Same Code and Diagram For Running Multiple LCD Displays On One Arduino UNO. Basic matter is that, when we use LCD without I²C module then it … [Read more...]
Arduino : Blink LED and Beep Every X Seconds Upon Push Button Press
Previously we have shown beep with key press and LED lightening up and projects like Arduino Traffic Light, Arduino TM1637 with RTC. Here is How To Blink LED and Beep Every 1 Second With Arduino Upon Push Button Press. We Will Discuss Many Ways To Achieve The Goal Including Using RTC. Arduino has many ways to count time. Easiest we know is usage in the way we Blink a LED as basic … [Read more...]
Android Smartphone Qualcomm DAC Sound Quality Hack : Part 1
Peculiarly, the manufacturers sell under-optimized or outdated coding resulting lower quality sound. This is an introductory article on tweaking Android acoustics. We need to hack to enable all the hardware features of Qualcomm 420 and above. Here is Part 1 of Android Smartphone Qualcomm DAC Sound Quality Hack. If you are fully newbie, you should read our few older article including SoC, Latest … [Read more...]
Earbuds vs In-Ears/In-Canal Earphones
Earbuds are old fashioned earphones which snugly fit outer ear. Previously we compared headphones and earphones. In previous article, we clearly informed the readers that good headphones delivers the best sound. But for practical reasons, we do need to think about earbuds, in-ears/in-canal earphones. Many people are not sure about whether earbuds or in-ear earphones are right for them. Both has … [Read more...]
Arduino e-Paper/e-Ink Buying Guide
In the year 2012, we discussed about e-Paper. Basis of electronic paper is 1970s technology from Xerox Corporation. Since 1970s, people are saying "electronic paper will be future technology". e-Paper had the bad luck of being in competition with some other display at that time which is not exactly much costly than e-Paper. Here is Arduino e-Paper/e-Ink Buying Guide. e-Paper Still Costly, Offers … [Read more...]
Graphing With Arduino on TFT LCD Color Display : Part I
Normally we show example of real-time reading things like DHT11 on monochrome LCD displays. We can graph that information. Graphing With Arduino on TFT LCD Color Display Probably a Needed Matter to Many Users. Graphing Can Become Difficult On Display With Less Known Drivers. Previously we have talked around MCUFRIEND TFT LCD Calculator. That one had problem with working codes. There are worse … [Read more...]
Arduino Soil Moisture Sensor : How Works, What to Buy
Basic purpose of soil moisture sensors is determining percentage of water in soil, rater volumetric water content of soil mainly for watering plant. We commonly view certain type sensors in prototyping works on various websites and online stores. Basic questions which will come to mind to a newbie are - How Arduino Soil Moisture Sensor Works? What to Buy as Soil Moisture Sensor? We are trying to … [Read more...]
Arduino Flip-Flop Blinking LED With Push Button
The current series of articles we are publishing are around basics for learning Arduino and also IC. We already know that we can blink one LED with Arduino and also we can blink one LED with 555 IC. We can also blink 2 LEDs alternatively with Arduino and also blink 2 LEDs alternatively with 555 IC. From our older examples, we can start LED to be on with one pushbutton press and turn-off with … [Read more...]
Making Stereo Wireless Over Bluetooth : Proper Selection of Devices
Today, it is becoming common to see a USB pen drive like thing plugged to some power source and any type of audio system or speaker including normal earphone or headphone (we discussed how earphone and headphone differs) and audio is streamed from mobile device like Android smartphone. Such China made units cost hardly $2 per unit. Making Stereo Wireless With Bluetooth or Wi-Fi Probably One of the … [Read more...]
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