How to make a PCB, part 1: making the schematic for Particle Photon RFM69 board

Particle Photon RFM69HCW schematic

Many of the projects I plan to cover in the future include designing and building custom PCBs. This is the first post in a series where I’ll be covering how to make a simple PCB, this post in particular covers the process of creating the schematic for the PCB. After this series is complete I’ll begin covering projects like my weather station, and a custom DDS function generator.

PCB design requirements

For this series I will be covering the process of making a PCB that connects a Particle Photon to an Adafruit RFM6HCW9 900MHz radio module.This is a very simple board which will give you a good introduction to PCB design. I will be using this same board as the indoor weather data receiver for my weather station project. [Read More]

DIY variable bench power supply with DPS5005 and LRS-150-48

Bench power supply front

I have used several power sources for my projects over the years. Things like wall warts, USB ports, ATX power supplies, and a laptop power supply plugged into a buck converter. These power sources are functional, but not ideal. This post covers the creation of a better bench power supply using a DPS5005 front end, and a LRS-150-48 power supply back end.

My bench power supply requirements

Here’s a list of things I was looking for in a power supply. I wanted something that was very flexible, so that it could be used for a wide variety of circuits. [Read More]