Analog To Digital Conversion – Performance Criteria
https://www.electronics-lab.com/article/analog-to-digital-conversion-performance-criteria/
Overview In this series of articles, we considered PCM (Pulse Code Modulation) as a method of digital representation of an analog signal. In the PCM method, the samples of the continuous wave are allowed to take only certain discrete values. These amplitudes are then assigned a code, where each code uniquely represents the magnitude of […]
Ferrite bead demystified from Analog Devices
https://www.electronics-lab.com/ferrite-bead-demystified-analog-devices/
App note from Analog Devices hinting for proper selection of ferrite bead for you applications. An effective method for filtering high frequency power supply noise and cleanly sharing similar supply rails is the use of ferrite beads. A ferrite bead is a passive device that filters high frequency noise energy over a broad frequency range. […]
Omron USB and PCB Type Environmental Sensors
https://www.electronics-lab.com/omron-usb-pcb-type-environmental-sensors/
Omron’s 2JCIE environmental sensors are IoT sensors integrated with Bluetooth. These sensors are capable of tracking eight different environmental factors which include: temperature, humidity, light, UV index, barometric pressure, noise, acceleration and VOC (Volatile Organic Compounds) with wireless communication functionality in an ultra-small footprint. The sensors can be used in the home to monitor room […]
ApplePi DAC Audio HAT Add-on For The Raspberry Pi Features 24-bit DAC And A 128dB SNR
https://www.electronics-lab.com/73571-2/
Orchard Audio quickly exceeded its $5K Kickstarter goal for its ApplePi DAC HAT board, which it is promoted as “the most advanced and highest performance sound card hat for the Raspberry Pi.” You can order the add-on board from May 13 starting at $175. Options include a $5 stacking header and a $25 5.25V, 3A power supply. The ApplePi […]
Infinite Noise true random number generator
https://www.electronics-lab.com/infinite-noise-true-random-number-generator-2/
This is an Open hardware USB true random number generator coming soon on crowdsupply.com The Infinite Noise TRNG is an affordable and secure true random number generator (TRNG) based on a modular entropy multiplier technique that continuously loops over previous random output, gathering randomness from the noise of the hardware components along the way, to […]
Filtering Noisy Arduino Measurements
https://www.electronics-lab.com/filtering-noisy-arduino-measurements/
Paul Martinsen @ megunolink.com discuss about noise in analog input of arduino and how to filter it. He examines 3 filtering algorithms: Averaging, Running average, Exponential filter and provides the code to achieve that. Measurements from the real world often contain noise. Loosely speaking, noise is just the part of the signal you didn’t want. […]
A Spark.io Indoor Ambient Quality Monitor
https://www.electronics-lab.com/a-spark-io-indoor-ambient-quality-monitor/
Davide Gironi has build an indoor ambient quality monitor based on particle.io : SXAM (Spark to Xively AMbient quality monitor), is an ambient quality monitor that logs 4 environmental parameters to the xively.com and display the ambient status by using for RGB leds. SXAM logs: Humidity, Temperature, Ambient noise, Brightness, Note: Spark.io is now Particle.io. […]
A Xively AMbient QUality MOnitor built on ATmega328
https://www.electronics-lab.com/a-xively-ambient-quality-monitor-built-on-atmega328/
Davide Gironi has build an indoor ambient quality monitor that is able to measure temperature, humidity, noise and brightness and indicate the ambient quality using 4 bi-color LEDs. He writes: The data it is logged to the xively.com platform, and displayed to the user through 4 bi-color leds. It can be used to monitor you […]