Running NodeMCU on a battery
ESP8266 low power consumption revisited: Using Wi-Fi is a convenient way to link your newly created IoT device into your existing IT infrastructure – including cloud services – but it also has a drawback. Wi-Fi’s demand for power usually makes battery operation impractical...
Continue Reading384:LED – Mini RGB LED array
Mini (1.44'' x 0.94'' or 24mm x 37mm) 8X16 RGB LED Array. 128 RGB LEDs with three LED chip each gives 384. For this project I designed two PCBs. A control PCB and a LED PCB. My goal was to fit them both in a small panel inside a 5x5 cm square to use cheap Chinese Manufacturing...
Continue ReadingOscilloscope Vertical Position and Offset explained
This video describes the function of the vertical position and vertical offset controls of a modern digital oscilloscope. It shows how using the offset control can provide valuable visibility of the DC bias and small signal waveform simultaneously, which can be very valuable in many...
Continue ReadingPiggybacking OLED display on WeMos D1 Mini
Daniel Eichhorn build a mini OLED display weather widget using WeMos D1 Mini board. Inspired by Mike Rankin’s (@mikerankin) beautiful crossovers between an ESP8266 ESP-01 and an 0.96 Inch OLED I2C display I decided to try if there wasn’t an easy hack to marry the two components...
Continue ReadingWiFi Weather display using a Wemos D1 board and operweathermap.org website
educ8s.tv published a new project, a ESP8266 Wifi weather display. In this video we are going to build a WiFi Weather display with the impressive Wemos D1 board. The board uses the ESP8266 chip in order to connect to the internet and we are going to program it using the Arduino IDE....
Continue ReadingDual axis solar tracker with online energy monitor
by geo bruce @ instructables.com: The features of this solar tracker are: Solar tracking: making sure the solar panels are aligned to the sun as long as possible. Energy monitor: This measures the voltage and the current generated by the panels and calculates the generated...
Continue ReadingSeeed Studio miniature soldering iron – Review
by Harry Baggen @ elektormagazine.com The Chinese company Seeed Studio offers a lot of interesting things for electronics enthusiasts. Along with selling products from various manufacturers, Seeed develops and produces their own products, many of which are very innovative. For...
Continue ReadingVery low power temperature sensor
Smartec has commenced selling a new temperature sensor as the successor to the SMT160: the SMT172. The SMT172 has a superior performance, such as a very low power consumption (60 μA) , a very high accuracy (0.1 °C) and a very high resolution (0.1 mK). [via elektormagazine.com] For...
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