Page 858 – Electronics-Lab.com

Build an Arduino-Controlled AM/FM/SW Radio

Posted on 7 June, 20167 June, 2016 by mixos

by Raymond Genovese @ www.allaboutcircuits.com:

The idea of a single chip radio is intriguing. The prospect is especially interesting to me because, frankly, I envy the analog skills I associate with building a radio receiver. When I browsed the circuit literature in the area, I came across the Silicon Labs collection. One of their chips, the Si4844-A10 caught my attention. This receiver has AM/FM/SW capability with all the bells and whistles and it is designed to work with a microprocessor. Best of all, the support components required are mainly associated with the microprocessor display and control functions with only a small amount of antenna support needed. I couldn’t resist taking the plunge.

Build an Arduino-Controlled AM/FM/SW Radio – [Link]

New Ultra-Small Digital Humidity Sensor: Simplicity Meets Proven Performance

Posted on 7 June, 20167 June, 2016 by mixos

Sensirion, the world’s leading manufacturer of humidity, temperature and flow sensor solutions, presents its second generation WLCSP (wafer-level chip-scale package) humidity sensor: the SHTW2. The SHTW2 humidity sensor comes in a flip chip package – an established technology that represents one of the simplest and smallest possible ways of packaging a semiconductor chip and results in a tiny footprint of 1.3 x 0.7 x 0.5 mm3. The SHTW2 also pioneers a new category of ultra-small humidity sensors suitable for applications with the tightest space constraints.

The SHTW2 is based on Sensirion’s CMOSens® Technology, which offers a complete sensor system on a single chip with a digital I2C interface. The sensor is fully calibrated and covers a humidity measurement range of 0 to 100% RH and a temperature measurement range of -30 to 100 °C, with a typical accuracy of ± 3% RH and ±0.4 °C. The operation voltage of 1.8 V and the low power consumption make the SHTW2 perfect for integration in consumer electronics that run on the tightest power budgets, such as mobile phones, wearables and Internet of Things (IoT) applications. With the industry-proven quality and reliability of Sensirion’s humidity and temperature sensors, and constant accuracy over a large measurement range, the SHTW2 offers an unprecedented price-performance ratio. Tape and reel packaging and suitability for standard SMD assembly processes ensure the SHTW2 is ideal for high-volume applications.

New Ultra-Small Digital Humidity Sensor: Simplicity Meets Proven Performance – [Link]

Sound to Light Effect

Posted on 7 June, 20167 June, 2016 by mixos

This project will turn your favorite music into light effects, a microphone picks up the sound and gives light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC.

Features

Supply 9V-12V DC (PP3 9V Battery)
On Board Preset for Gain Adjust
6 On Board LEDs
On Board Condenser Microphone
SMD based small Board
PCB Dimension 45.72 X 28.58 MM
CN1 Supply Input
PR1 Sensitivity Adjust

Sound to Light Effect – [Link]

Sound to Light Effect

This PROJECTS will turn your favorite music into light effects, a microphone picks up the sound and gives light effects with 6 Red LEDs, ideal for creating fun atmosphere at parties & discos. Supply 9V-12V DC.

Features

Supply 9V-12V DC (PP3 9V Battery)
On Board Preset for Gain Adjust
6 On Board LEDs
On Board Condenser Microphone
SMD based small Board
PCB Dimension 45.72 X 28.58 MM
CN1 Supply Input
PR1 Sensitivity Adjust

Schematic

Parts List

Video

How to build an Arduino Uno on a BreadBoard

Posted on 7 June, 2016 by mixos

“webgeeks” show us how to setup an Arduino UNO on a breadboard – aka bare minimum arduino:

If you are like and me and enjoy building electronic projects then you might have worked with the Arduino Uno. The Arduino uno is the most popular micro controller of the series and has a large collection of libraries which make working with it very easy. So there would be times where you may need more than one Uno for the project, I like to make my own micro controller rather than buying a new one, as this saves me some money which may be helpful for other such projects.

How to build an Arduino Uno on a BreadBoard – [Link]

ESP8266: SSD1306 Oled Library Release

Posted on 7 June, 2016 by mixos

Daniel Eichhorn writes:

The “ESP8266 OLED SSD1306″ is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all the ugly pieces of code which I initially wrote caused by my near C/C++ illiteracy. He also added support for Pasko’s BRZO I2C library which is partially written in assembler and allows a much higher throughput over the I2C channel.

ESP8266: SSD1306 Oled Library Release – [Link]

Arduino Bluetooth Tutorial HC-05

Posted on 6 June, 20166 June, 2016 by mixos

Bluetooth is typically a low power, medium range device, in fact it can reach up to 10 meters. Bluetooth operates on the same frequencies as WiFi, 2.4Ghz.Connections are normally one to one meaning no group communication is allowed by the protocol. The connection is established by a master device, which connects to a slave device. In internet terminology the master is the client and the slave is the server.

Arduino Bluetooth Tutorial HC-05 – [Link]

octopart.com – Common Parts Library

Posted on 6 June, 20167 October, 2016 by mixos

octopart.com just launched the latest Common Parts Library – it comes with integration with Seeed Studio’s Open Parts Library and a downloadable symbols and footprints library in KiCad, Eagle and Altium.

Today, we are announcing a new version of the Common Parts Library for Production. Continuing on the journey to make it easy to design products and get them to production, this new version provides a holistic view of the supply chain for each part, including information about equivalent parts in the Shenzhen supply chain. This is supplemented by real-time pricing and availability information for each part so that you can make part selection decisions faster. Furthermore, the CPL for Production comes with a single symbols and footprints library in popular PCB design tools including Altium Designer, Eagle, and KiCad

octopart.com – Common Parts Library – [Link]

Tiny Precision Digital Humidity sensor

Posted on 6 June, 201615 April, 2019 by mixos

The new digital SHT3x humidity sensor series takes sensor technology to a new level. As the successor of the SHT2x series it is determined to set the next industry standard in humidity sensing. The SHT3x humidity sensor series consists of a low-cost version with the SHT30 humidity sensor, a standard version with the SHT31 humidity sensor, and a high-end version with the SHT35 humidity sensor. The SHT3x humidity sensor series combines multiple functions and various interfaces (I2C, analog voltage output) with a applications-friendly, very wide operating voltage range (2.4 to 5.5 V). The SHT3x humidity sensor is available in both large and small volumes.

Tiny Precision Digital Humidity sensor – [Link]

The SHTxx sensors measure relative humidity and temperature of their direct environment. But what to do if PCB doesn’t allow the sensor to be placed in the optimal position?

Sensirion’s Design Guide Humidity Sensors describes how to design PCB, enclosure and place sensor to optimal location but in practice, there are also applications where it is not possible.

With the SCC30-DB module, designer can place a humidity and temperature sensor anywhere within a device and connect it to the main PCB with four wires. You do not need to spend time to create your own sensor module. Based on Sensirion’s experience and expertise, the SCC30 is optimized for easy design-in and sensing performance.

The SCC30 uses the latest generation sensor -SHT30. Module uses Scondar SCT2001WR-S-4P connector (compatible to JST part no. S4B-PH-SM4-TB). To support the development, we offer you mating connector, JST PHR-4 housing and pre-crimped wires.

The SCC30-DB supports I2C normal (100 kHz) and fast (400 kHz) mode. Lower frequencies (below 100 kHz) are recommended for communication because of capacitive coupling of cables with the I2C bus.

The most convenient way to evaluate SCC30-DB performance is the use of SEK-SHTxx/SGP30 evaluation kit. SEK-SCC30-DB, SCC30-DB module with cable for connecting to kit and Sensirion Control Center software. Software is available for Windows, Linux and macOS.

5 Amp H-Bridge DC Motor Driver using MC33886

Posted on 6 June, 2016 by mixos

This tiny module has been designed to use in Robotics, Power tools, automotive applications. The module based on MC33886 from NXP, MC33886 is a monolithic power IC comprising control logic, charge pump, gate drive, and low RDS(ON)MOSFET output H-Bridge circuitry in a small surface mount package. MC33886 is a monolithic h-Bridge ideal for fractional horsepower DC-Motor and bi-directional thrust solenoid control. The IC incorporates internal control logic, charge pump, gate drive, and low Rds. MOSFET output circuitry. The MC33886 is able to control continuous inductive DC load currents up to 5A. Output loads can be pulse width modulated (PWM) at frequencies up to 10 KHz. A Fault status output reports under-voltage, short-circuit, and over temperature conditions. Two independent inputs control the two half-bridge totem-pole outputs.

Features

Supply 5V to 28V
TTL/CMOS compatible Inputs
Continuous DC Load Current up to 5.2A min
Output Current Limitation at min. 5.2A with PWM Current Regulation
Short-Circuit Shutdown for Output Currents over 8A
Logic Inputs TTL/CMOS Compatible
Operating Frequency up to 10 kHz
Over temperature and Short Circuit Protections
Under voltage disable Function
Output control via two independent inputs (forward, reverse, free-wheeling low/high)
Two disable inputs are provided: Low =True and High =True

5 Amp H-Bridge DC Motor Driver using MC33886 – [Link]