PCF8574 and I/O Bus Expanders

I2C bus and PCF8574

Every so often, a new innovation comes barrelling into the electronics industry and remains useful for decades to come. Almost 40 years after it was introduced, the inter-integrated circuit (I2C) protocol is still a popular low-speed signaling standard for interfacing between host controllers, sensors, slave components, and much more.

Component Footprints for Hardware Start-Ups

Creating a custom schematic symbol in a SPICE program.

Creating a hardware start-up is perhaps one of the most challenging tasks an entrepreneur can take on, especially because a hardware start-up requires a vast amount of resources.

MSP430: Applications for Low Power MCUs

MSP430 applications on a PCB

When you think of embedded systems, plenty of different applications come to mind. Anything from a programmable microwave to an electronic control unit in an automobile qualifies as an embedded system. Each of these applications needs a different type of processor to provide its functions. For smaller devices like wearables and always-on products, you’ll need […]

How to Create a Bill of Materials

Organizing an electronics project can be a daunting task. Collaborating between design and engineering teams—while making sure a project uses the best parts for the job—can get complicated quickly.

ULN2003 Datasheet: Discussing Transistor Arrays and Parameter Necessities

DPAK transistors and ULN2003 datasheet

Instead of using multiple discrete transistors to build Darlington pairs, you can use a ULN2003 or one of its variants. Here’s where you can find a ULN2003 datasheet. IoT products, environmental products, and anything else that needs analog sensor fusion will operate at a variety of signal levels. The signal type also varies from sensor […]

SPICE Model Library for Easy Integration and Simulation

A SPICE model library is a general-purpose library for the simulation of electronic circuits. The original implementation of SPICE (“Simulation Program with Integration Circuit Emphasis”) was developed by researchers at the University of California, Berkeley, in 1973. This implementation was actively developed and refined for 20 years as one of the first open-source technical programs. […]

LM358 Datasheet: Applications for Low Power Operational Amplifiers

LM358 datasheet op-amp

Every engineer remembers the classic LM356 op-amp from their electronics lab classes. Looking for an op-amp for your next system? Every engineer is likely familiar with the LM358 and the specifications in the LM358 datasheet. This common op-amp has plenty of uses in DC and low-frequency AC applications. There are many other op-amps that provide […]

Free PCB Footprints and Schematic Symbols for Designers to Use

It isn’t so long ago that I was working through school and taking apart remotes and radios in my house to learn about different electronics. Now that I’m working in the industry, it’s easy to take for granted what is being given to me through industrial organization and standards. It never fails to rain on […]