In our older guides on LCD display, we have shown the initial 1602A LCD Display Arduino Connection (Blue Light White Text 16×2), added a LDR to use that display to show intensity of light. But, that way of interfacing with Arduino is too primitive and engages too many pins. It is high inconvenient for repeated use and does not give all the features. We have software serial monitor on Arduino IDE. … [Read more...]
List of Raspberry Pi Essential Accessories For The New Users
In our one old guide, we discussed in details how to setup and run Raspberry Pi from command line and list of Single Board Computers as alternative to Raspberry Pi. Unless You Are Running Raspberry Pi or Some Other Single Board Computer From Command Line, You'll Need Some Accessories. The listed things are bare minimum and one have to purchase along with Raspberry Pi or similar Single-Board … [Read more...]
Smart TV Buying, Building Guide For 2018
Even 5 years back, we could easily build own high end system with a large computer monitor with HDMI input, satellite television service provider's decoding box and sound system. We actually publish such guide for building cheap, high end television to get rid of proprietary stuffs of television companies. With time, F/OSS hardware and software improved. We have Raspberry Pi and lot of Raspberry … [Read more...]
Arduino Spectrum Analyzer With MSGEQ7 IC
It is true that Arduino itself can analyse music input. But Arduino spectrum analyzer with MSGEQ7 IC makes the total thing professional grade. Problem is that, MSGEQ7 IC is not exactly cheap and for bigger displays multiple MSGEQ7 IC may be needed. Another problem of MSGEQ7 is less availability as real to use shield. In other words, most will have to buy MSGEQ7 IC as component. That is great but … [Read more...]
Multiplexing vs. Charlieplexing : Basics & Example With Arduino
In our previous article on using MAX7219 IC to build bigger display with LED, 7 segment segment LED, we talked about multiplexing. For future articles and guides on our website, it is important to know about multiplexing and charlieplexing. Multiplexing, Charlieplexing decreases pin count in a cluster of LEDs. Here is Basic Theory on Multiplexing vs. Charlieplexing & Arduino … [Read more...]
Arduino MAX 7219 CNG Basic Circuit : LED, 7 Segment Displays
MAX 7219 and MAX 7221 quite commonly used display driver IC for LEDs. Actually the same IC was in the 8x8 LED Matrix display. Right now, we know about 7 segment LED display as electronic component and multiplexing (increasing the number of digital pins in Arduino). Here is how to create Arduino MAX 7219 CNG basic circuit to control LED, 7 Segment displays in own custom ways rather than using … [Read more...]
How to Use Python on Arduino, Like to Blink LED?
We can directly use C++ on Arduino instead of using Arduino's default way. Also, we can code with C on Arduino. As readers possibly know - Arduino does not have any special language. But, How to Use Python on Arduino, For Tasks Like to Blink LED?. We need not to compile the Python scripts unlike C++ but simply run the Python scripts from Terminal/iTerm2. That is not exactly great, but kind of … [Read more...]
Connecting Arduino With M029 JoyStick : Getting Started
Obviously these are Made in China and costs around $2. Here is a getting started guide around connecting Arduino with M029 JoyStick and testing with basic code. It is a useful thing for robotics. These analog, has 2 axis, PS2 compatible. Exactly like Nokia's old Symbian mobile phones, we can use this joystick to control a menu, centre click to select or control servo motors. But before doing … [Read more...]
Parts of Used Cell Phones Which Can Be Used In DIY Electronics
Commonly we have at least one old discarded cell phone. In some areas, there are even laws not to throw them somehow. But they actually have some usable components. There are many guides on this earth on how to use their components like display screen, bluetooth, card reader, WiFi as basic electronic components. The popular, cheap Nokia 5110 display actually are from used mobiles. Here is a guide … [Read more...]
7 Segment LED Display Tutorial For Dummies
7 Segment LED displays are cheap and various sizes available. Unlike ready to use TM1637 7 Segment LED display module, these are slightly difficult to get started. But once the basic is mastered, they are highly flexible. Here is step by step 7 Segment LED display tutorial for dummies on how to light up with battery to control with Arduino without library. 7 Segment LED displays are nothing but … [Read more...]
Light Measurement With Arduino, LDR and LCD
Normally in photography we use light meter. Unfortunately, good light meter is not cheap. It is difficult to measure in light in Lux but possible to measure in some units although exactly Lux. That possibly able to deliver an idea about intensity of light. Here is How To on Light Measurement With Arduino, LDR and LCD. We have basic guides around LDR with Arduino., however that is far from meeting … [Read more...]