Dual USB Serial and I2C Converter
https://www.electronics-lab.com/dual-usb-serial-and-i2c-converter/
Jesus Echavarria has posted a new project, a dual USB – Serial and I2C converter to communicate with serial and I2C devices. Hi all! After a couple of months with a lot of work, I come here again with the last board I develop before Christmas. It’s a dual USB serial and I2C converter based […]
Unipolar Stepper Motor Driver Circuit
https://www.electronics-lab.com/unipolar-stepper-motor-driver-circuit/
This unipolar stepper motor driver circuit is used to drive a 12V unipolar stepper motor with a current rating of 1.25A. It uses PCA9537 IC, which is a 10-pin CMOS device that provides 4 bits of General Purpose I/O (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applications. It consists of a 4-bit configuration register […]
INA219 current sensor DIY Breakout board
https://www.electronics-lab.com/ina219-current-sensor-diy-breakout-board/
Juan Ignacio has designed a INA219 current sensor DIY Breakout board: Another small board, this time for a INA219. The INA219 is a high-side current shunt and power monitor with an I2C interface. For testing I used Rei VILO library with a MSP430G2553 and Energia, and I measured the power consumption for this simple circuit. […]
DIY I2C LCD Display
https://www.electronics-lab.com/diy-i2c-lcd-display/
sspence @ instructables.com shows how to interface a character LCD using I2C and only two IO pins. The typical parallel LCD used with an Arduino (16×2 or 20×4) has 16 pins. Only 6 I/O pins are required on the Arduino, but what if you could get that down to two I/O pins, and still have those […]
3D Print the Ultimate Helping Hands for a PCB Workstation
https://www.electronics-lab.com/3d-print-the-ultimate-helping-hands-for-a-pcb-workstation/
by Giuseppe Finizia @ makezine.com: I am the Senior Analyst of the Electronic Forensics Unit of the Carabinieri (Italian Military Police) and I deal with technical investigations on seized electronic devices. I spend most of my day in a well-equipped electronic laboratory, but I was lacking a tool for performing technical assessments on printed circuit boards […]
Get rid of unpleasant odors easily and effectively
https://www.electronics-lab.com/get-rid-of-unpleasant-odors-easily-and-effectively/
USM-MEMS-VOC module evaluates rate of air pollution by contaminants such as cigarette smoke and cooking odors and allows control of air ventilation system on demand. Modul USM-MEMS-VOC is based on the innovative and highly stable TGS 8100 MEMS semiconductor sensor TGS8100 from Figaro. In the presence of detectable gas, sensor resistance decreases depending on gas […]
High Speed Ecosystem Support and Calamity Monitoring System
https://www.electronics-lab.com/high-speed-ecosystem-support-and-calamity-monitoring-system/
The innovation of equipment for calamity detection and monitoring are quite rampant. It is because of consecutive aggression of storms and earthquakes in different parts of the world. As to observe the different scenarios, these are not merely natural causes, there are some or most of it is manmade. A good example of it is […]
8V97051 Low Power Wideband Fractional RF Synthesizer
https://www.electronics-lab.com/8v97051-low-power-wideband-fractional-rf-synthesizer/
This design features a low power wideband RF synthesizer that is used in GSM receiver cards. It has dual differential and open drain outputs with frequency range of 34.375MHz to 4400MHz(in continuous range). The logic compatibility is 1.8V while the system is running on a single 3.3V supply. It has -143dBc/Hz Phase Noise (PN) performance […]
LTC3335 – Nanopower Buck-Boost DC/DC with Integrated Coulomb Counter
https://www.electronics-lab.com/ltc3335-nanopower-buck-boost-dcdc-with-integrated-coulomb-counter/
The LTC®3335 is a high efficiency, low quiescent current (680nA) buck-boost DC/DC converter with an integrated precision coulomb counter which monitors accumulated battery discharge in long life battery powered applications. The buck-boost can operate down to 1.8V on its input and provides eight pin-selectable output voltages with up to 50mA of output current. The coulomb […]
IC monitors multicell battery packs
https://www.electronics-lab.com/ic-monitors-multicell-battery-packs/
by Susan Nordyk @ edn.com: The ISL94203 battery-pack monitor IC from Intersil monitors, protects, and cell-balances three- to eight-cell rechargeable battery packs, supporting Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries. Its internal state machine has five preprogrammed stages that accurately control each cell of a battery pack to extend operating life. In addition to […]