Tech Fruit

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PedalSHIELD MEGA is a programmable guitar pedal that works with the Arduino MEGA 2560 and MEGA ADK boards. It includes a 1.3 inches OLED screen, a True Bypass footswitch, 2 programmable push-buttons and an analog input/output stage. The project is Open Source & Open Hardware and aimed for hackers, musicians and programmers that want to learn about DSP (digital signal processing), guitar effects, and experiment without deep knowledge on electronics or hardcore programming. https://youtu.be/bhdZ3ekHsBg You can program your own effects in C/C++ with the standard Arduino IDE tool and get inspired using the library of effects posted on the  pedalSHIELD MEGA online forum. Circuit Explanation: This shield that is placed on top of an Arduino MEGA has three parts: 1. Analog Input Stage: It takes the digitalized waveform from the ADC and does all the DSP (Digital Signal Processing) creating effects (distortion, fuzz, volume, delay, etc). 2. The output stage:  Once the

In this tutorial I will show you how to make a simple line follower robot. Normally these type of robots use microcontrollers and complex logic to track and follow line. But today I will be showing you how you can make a simple line follower without a microcontroller. Before we start making the robot, let’s understand what a line follower is and how it works. What is a Line Follower? Line Followers are Automated Guided Vehicles (AGVs). These robots follow a line (black or white) using some logic. They’re mostly used to carry material around inside a factory. A microcontroller is like a brain of the robot that can be programmed to add unique features. But we don’t really need any coding knowledge or fancy microcontrollers to make this particular robot. How does it works? A line follower is an array of Infrared (IR) sensors. These sensors have a set of IR LEDs and Photodiodes. The LEDs emit infrared light on a surface (floor) and the Photodiode receives reflected light. The a

In this tutorial we will learn how to build an Arduino wireless network, composed of multiple NR24L01 transceiver modules. You can watch the following video or read the written tutorial below. Overview As an example I made a network of 5 nodes and each of them can communicate with any node in the network and at the same time they can work as both transmitters and receivers. This example is actually set up in a way that explains how to make a much larger network, or to be precise, we can have a total of 3125 modules communicating to each other on a single RF channel. So let’s take a look how it works. In my previous tutorials we have already learned  how to make a wireless communication  between two Arduino boards using the NRF24L01 modules and the RF24 library. Now in addition to this library, we will use the  RF24Network  library, which enables in an easy way to build an Arduino wireless network with many boards communicating to each other. Here’s how the netwo