These days, you could be forgiven for thinking driving an LCD from a microcontroller is easy. Cheap displays have proliferated, ready to go on breakout boards with controllers already baked in. Load up the right libraries and you’re up and running in a matter of minutes. However, turn your attention to trying to drive a […]
DRIVING A CONTROLLERLESS LCD WITH THE HUMBLE ARDUINO UNO Read More »
Makers, developers and electronic enthusiasts may be interested in a new Arduino programmable Internet connectable LED matrix display launched via the Crowd Supply website this week, which is now available to back with early bird pledges available from just $29. The LED display is available in six different colours including white, blue, red, orange, green and purple.
Internet connectable LED Matrix from $29 Read More »
We can measure temperature and humidity inside the fridge using a normal temperature-humidity indicator but relative humidity (RH) could be inaccurate in that case. The moment the fridge door is opened, RH will shoot up due to ingress or egress of moisture in the surroundings. The small sniffer device, described in this article, picks up
Microcontroller Projects: Fridge Temperature and Humidity Indicator Read More »
Three-fourths of the earth is water, out of which 97 per cent is saline (in oceans, seas and groundwater). The remaining 2.5 per cent to 2.75 per cent is fresh water , out of which 1.75 per cent to two per cent is frozen in glaciers, ice and snow. Fresh groundwater and soil moisture constitutes
Microcontroller Projects: Sonar Water-Level Meter Read More »
The ESP8266 WiFi Module is a self-contained SOC that can give any microcontroller access to your WiFi network. It’s an extremely cost-effective board with a huge and ever-growing community. Each ESP8266 module comes pre-programmed with an AT command set firmware. This module has a powerful on-board processing and storage capability that allows it to act as a
Programming ESP8266 With Arduino IDE : The Easy Way Read More »
Description HC-12 are cheap 433MHz wireless serial port communication modules with a range up to 1800m in open space. Each costs about $5 when bought from China, and 2 of them can create wireless UART link that can be used, for example, to transfer telemetry data from UAV. Or drive IoT device. Or connect sensors.
433MHz wireless module configuration Read More »
To understand error messages shown by ESP8266 in the serial monitor, read the latest article: ESP8266 ERROR MESSAGES AND EXCEPTIONS EXPLAINED] Hi, guys. This tutorial is for helping you to flash firmware in your favorite ESP8266 module. I guess almost all of you have a good enough idea about ESP8266. Still, here a short note
Flash Firmware To ESP8266 WiFi Module the easy way Read More »
I²C vs SPI Today, at the low end of the communication protocols, we find I²C (for ‘Inter-Integrated Circuit’, protocol) and SPI (for ‘Serial Peripheral Interface’). Both protocols are well-suited for communications between integrated circuits, for slow communication with on-board peripherals. At the roots of these two popular protocols we find two major companies – Philips
Introduction to I²C and SPI protocols Read More »
The main objective of this project is to show how to interface a uCAM-II serial camera to 4Duino. uCAM-II is a highly integrated micro serial camera which could be controlled by any host that requires a video camera or a JPEG compressed still camera for embedded imaging applications. uCAM-II processes various features making it trivial
4Duino UCAM-II Demo Read More »
While most of my microcontroller designs run on 3.3 volts there is still the ocasional 5 volt design. Or I do something with an Arduino. So the need may arise to interface between logic working at different voltage levels. There are several ways of doing this, depending on your needs. Things are relatively simple as
Bi-Directional Voltage Level Translator Read More »
