Circuits & Schematics Microcontrollers Usage - 11

There are many TFT modules available on the market that are designed to connect directly to an MCU to provide a full colour graphical display, just search ebay for “tft module” to see what I mean. Unfortunately for Arduino users the ...

The Power Scope is a meter intended for use on a breadboard to aid in the development of battery-operated devices. It provides dedicated monitoring at the power source so you can quickly see the effects of circuit/software changes on power ...

Introduction This RFID reader works with 125 kHz tags in credit card size shape cards and with 125 kHz key fobs (Figure 1). The EM4100 protocol is used. When you approach an RFID Tag close enough (4-5 cm) to the reader's coil (L1) the reader will ...

The idea Ardusumo is a universal platform to build robots on wheels that can move around avoiding obstacles using infrared sensors and follow routes marked with dark lines on a white background (Figure 1). We have created Ardusumo to bring young ...

Aruna Rubasinghe Matrix keyboards are common as an input device in microcontroller-based projects. A conventional way of connecting a matrix keyboard to a microcontroller is to use multiple I/O pins of the MCU. The MCU then uses a scanning ...

Frequency meter with some of quite good performance, capable of measuring frequencies from 1Hz to 10MHz (9,999,999 Hz) with a resolution of 1 Hz over the entire range. Ideal for function generators or as a standalone meter. It is cheap and easy to ...

Zoran Mijanovic, Nedjeljko Lekic Part 1 - Schematic Let us look at the first shift register. The microcontroller drives CLOCK input directly. The same signal passes through the RC filter and drives DATA input D (Figure 5). The RC filter is formed ...

Branislav Korenko and Marek Cerný, Slovak University of Technology, Bratislava, Slovakia EDN This Design Idea was realized for voltage/current measurement on a four-channel analog voltage source but has wide use in many other applications. ...

Zoran Mijanovic Nedjeljko Lekic EDN This Design Idea shows how a single microcontroller port can drive a lot of output lines through shift register. In this case we use the shift register with strobe control to achieve perfect output line control. ...

The objective of this project is to build an Arduino voice shield to empower thousands of voice related applications! All this mostly thanks to an integrated ISD1790PY chip (Figure 1). Figure 1. Voice Shield for Arduino This particular voice/TTS ...