Simple circuit provides precision ADC interface
https://www.electronics-lab.com/simple-circuit-provides-precision-adc-interface/
Moshe Gerstanhaber @ edn.com provides an simple ADC interface using instrumentation amplifier IC. Real-world measurement requires the extraction of weak signals from noisy sources. High common-mode voltages are often present even in differential measurements. The usual approach to this problem is to use an op amp or an instrumentation amplifier and then perform some type of […]
AAduino – Arduino Wireless in AA form factor
https://www.electronics-lab.com/aaduino-arduino-aa-battery-holder/
Johan wanted to shrink his Arduino based ISM radio node to fit in an AA battery compartment so AAduino was born. The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is powered by an ATMega328p and is […]
PIC16F628A Programmable Digital Timer
https://www.electronics-lab.com/pic16f628a-programmable-digital-timer/
Raj Bhatt shared another project with us. This time is a programmable digital timer with relay switch based on PIC16F628A. Programmable relays find use in numerous automation applications such as automatic street light control, watering and pump control, HVAC, home automation, power plants automation in industries, etc. This article describes how to build a fully […]
PIC16F628A Programmable Digital Timer
https://www.electronics-lab.com/project/pic16f628a-programmable-digital-timer/
Programmable relays find use in numerous automation applications such as automatic street light control, watering and pump control, HVAC, home automation, power plants automation in industries, etc. This article describes how to build a fully functional, one-channel programmable relay switch using the PIC16F628A microcontroller. It allows you to set both ON and OFF time. The […]
Mini Arduino Lux Meter
https://www.electronics-lab.com/mini-arduino-lux-meter/
Here is a nice build of a LUX meter using BH1750 sensor and a Nokia 5110 LCD. The meter is controlled by an Arduino Pro Mini and is powered by a Li-Ion battery. The LCD backlight is controlled according to environment light and there is graphing capability of the measured light intensity. That’s when I […]
Control ESP8266 over the internet
https://www.electronics-lab.com/control-esp8266-internet/
Here is a basic tutorial on how to control ESP8266 over the internet using two buttons on a browser window. The article goes through Arduino IDE configuration and example code is included. There are but a few things better than (succesfully) programming and using your Arduino. Surely one of those things is using your ESP8266 […]
DIY Morning Feed With LED Matrix
https://www.electronics-lab.com/diy-morning-feed-led-matrix/
Here is a LED matrix able to show useful information such as weather forecast, temperature and stock updates. The matrix is controlled by a Particle Photon board. You wake up in the morning. You’re groggy. You grab your phone lazily and start browsing. You check the weather, your stocks, your instagram. Before you know it, you’re […]
Low-side I/V sensing IC, with internal power calculation
https://www.electronics-lab.com/low-side-iv-sensing-ic-internal-power-calculation/
Maxim Integrated has posted details of the MAX44299, a low-side current, voltage, and power monitoring circuit that provides an analogue output current proportional to the measured current, voltage, and the internally calculated instantaneous power. The power monitor offers high precision and integration in tiny size. Instantaneous power is calculated internally by multiplying the load current […]
PiDrive – 314GB hard disk for the Raspberry Pi
https://www.electronics-lab.com/pidrive-314gb-hard-disk-raspberry-pi/
Western Digital have launched the WD PiDrive, a hard disk specially designed for the Raspberry Pi with a storage space of 314 GB. The engineers have modified the magnetic recording system and electronics to suit the characteristics of the RPi, and reduced the current consumption. The recommended retail price is $ 45,81 but a discount is […]
ESP8266 + I2S = Software-based 10-Base-T Ethernet Driver
https://www.electronics-lab.com/esp8266-i2s-software-based-10-base-t-ethernet-driver/
cnlohr @ github.com wanted to have an Ethernet interface for ESP8266 so he build one. more details on hackaday. This is a relatively unreliable and coincidentally functional ESP8266 Ethernet driver. It only uses two pins on the ESP, the I2S pins, but does provide Ethernet. It does all its own manchester encoding/decoding, framing, FCS, etc. It […]