OpenSource Arduino OLED Clock with temperature measurement
https://www.electronics-lab.com/opensource-arduino-oled-clock-with-temperature-measurement/
Konstantin Dimitrov has published his Arduino OLED clock which uses DS1307 real time clock module and TMP102 temperature sensor that communicate through I2C. This clock will not only show you exact time and date but also it will show you the ambient temperature in both Fahrenheit and Celsius, with accuracy of 0.5°C (-25°C to +85°C) and […]
Wi-Fi and OLED Upgrade for MightyOhm Geiger Counter
https://www.electronics-lab.com/wi-fi-and-oled-upgrade-for-mightyohm-geiger-counter/
Dan Watson @ syncchannel.blogspot.com wanted to have more fun with his MightyOhm Geiger Counter so decided to add an OLED display and Wifi capability to it. To achieve that he modified the counter, added a Feather HUZZAH ESP8266 with OLED FeatherWing and wrote some code. The process is documented on his blog: I assembled my Geiger […]
Home Built Bench Power Supply using ATMEGA328P
https://www.electronics-lab.com/home-built-bench-power-supply-using-atmega328p/
ianjohnston.com has designed a nice power supply based on ATMEGA328P and Arduino bootloader. The output is dual channel 0-24vdc @ 3A each, with preset constant current and independant voltage/current control. This isn’t a full design blog but I’ve tried to document/add stuff as I go along, the idea being I’ll put all design documentation (schematic, […]
LTC4123 – Low Power Wireless Charger
https://www.electronics-lab.com/ltc4123-low-power-wireless-charger/
Linear Technology Corporation introduces the LTC4123 to further expand its offerings in wireless battery charging. The LTC4123 combines a 30mW wireless receiver with a constant-current/constant-voltage linear charger for NiMH batteries, such as Varta’s power one ACCU plus series. An external resonant LC tank connected to the LTC4123 enables the IC to receive power wirelessly from […]
Serial Port Communication in C#
https://www.electronics-lab.com/serial-port-communication-in-c/
Maurizio tipped us with his latest article on how to use Serial Port in C#. The article does cover the basic code needed to achieve serial communication. The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the wide popularity of the UART interface […]
12V @ 120mA Transformerless Power Supply
https://www.electronics-lab.com/project/12v-120ma-transformerless-power-supply/
The circuit provided here is a transformer-less non-isolated power supply which is capable of delivering an output of 12V at 120mA current for an input voltage varying from 85VAC-265VAC. The LNK304 is the heart of this circuit which supports buck boost and flyback topologies. This project is low in cost and simple when compared other […]
Hack-proof RFID chips claimed by MIT
https://www.electronics-lab.com/hack-proof-rfid-chips-claimed-by-mit/
Researchers at MIT has announced a new RFID chip that is almost impossible to hack and it could mean that an identity thief couldn’t steal your credit card number by sitting next to you. The researchers’ new chip uses a bank of 3.3-volt capacitors as an on-chip energy source. But it also features 571 1.5-volt […]
36V, 800mA Robust Linear Regulator Has Extended SOA
https://www.electronics-lab.com/36v-800ma-robust-linear-regulator-has-extended-soa/
Linear Technology Corporation announces the LT3089, a rugged 800mA wide input voltage range linear regulator with key usability, monitoring and protection features. The device has an extended safe operating area (SOA) compared to existing regulators, making it ideal for high input-to-output voltage and high output current applications where older regulators limit the output. The LT3089 […]
How to use the 4.3′ E-Paper display with Arduino
https://www.electronics-lab.com/how-to-use-the-4-3-e-paper-display-with-arduino/
educ8s.tv has uploaded another tutorial on how to use a e-paper display with Arduino. Source code is provided. Electronic paper and e-paper are display technologies that mimic the appearance of ordinary ink on paper. Unlike conventional backlit flat panel displays that emit light, electronic paper displays reflect light like paper. This make them more comfortable […]
MSP430 VFD Clock
https://www.electronics-lab.com/msp430-vfd-clock/
Daniel Johnson @ danielelectronics.com has build a VFD Tube Clock based on MSP430 microcontroller and explains it’s code. I wanted to do a follow-up to my last clock build, the MSP430 Analog Gauge Clock, reusing some of the code from that project, and I had an IV-18 vacuum florescent display (VFD) tube that I bought on […]