Reading simple 0 to 5V or 0 to 3.3V signals with an ADC is trivial and can be done entirely with the integrated hardware on most microcontrollers. Things get slightly more difficult when you need to sample analog signal that can be negative or positive. This blog post will walk you through a basic solution […]
Category: Hardware
Introduction to LTSpice
SPICE tools (Simulation Program for Integrated Circuit Engineering) such as LTSpice are designed to provide stable circuit simulations in order to validate designs prior to physical prototyping. This is incredibly useful when working with new analog designs as it enables you to quickly validate different circuits without having to spin a prototype or procure the […]
Capacitor Conversion Chart
This is a rather useful print-able capacitor value conversion chart I’ve used when assembly prototypes when the units on the Digikey bags does not line up with the schematics.
Passive Analog Filtering
The passive analog filter is the simplest and compact way to filter analog signals. They are very reliable and require no additional power supply. All of these can be designed with a simple configuration of resistors and capacitors. The basic filter types are: Low pass High pass Band pass Band reject / Notch Critical Equations […]