Bald Engineer

Did you know that TTL chips do not output 5 volts? 74LS, 74HC, and 74HCT all have different input and output thresholds. Switching between logic families can be difficult if you …

Everything with a microcontroller has serial buses in it. Busses like UART, I2C, and SPI are very popular choices. When you have a problem with a sensor that uses one or the bus …

The 555 is a very popular chip, and for good reason. It is such a versatile timer. Learn about 555 measurements like how to measure the voltage divider inside the chip and what is …

As batteries age, their ESR goes up. Eventually, they will no longer be serviceable. A battery measurement tool like the Hioki BT3554 lets field service technicians monitor the …

Obviously, you need solder to build most circuits. However, before and after soldering a circuit, there is a bunch of other stuff. In this Workbench Wednesdays episode, James looks …

Ceramic capacitors change capacitance with applied voltage, temperature, and age. They are the most popular electronic component, yet many do not understand what causes this …

Active components like transistors, BJTs, MOSFETs, and integrated circuits (ICs) make it possible to control circuits. This video explains the must-have NPN and PNP BJTs. For …

Whether you are just getting started in electronics or you have boxes of parts, it is good to know what are the most critical parts to have in your kit. James asked the element 14 …

Logic probes are great for debugging 7400 series logic chips and digital circuits. In this video, James makes a counter circuit and debugs each stage as he builds, with a Logic …

One of the loudest pieces of equipment on Bald Engineer’s electronics workbench is the Electronic DC Load. James has finally had it with its noise and decided to swap the fan out. …