I recently purchased a DFRobot DFR0507 OLED display kit to display error messages, server status among other things from my ESP32. It is a monochrome 1 inch display with sharp contrast and a light blue backlight. It is a DFRobot ‘Cover’, meaning that it is a kit with a display attached to it and it…
The South Korean electronic manufacturer Samsung made a stretchable OLED display that can monitor and display your heartbeat. The display can be stretched by 30% and Samsung says it can monitor your heartbeat more accurately than existing wearable devices — and for longer time periods. Manufacturing electronic circuitry that can stretch significantly without damage is…
Satellites have limited processing capabilities due to the various technological constraints of operating in space. Space agencies such as NASA have been trying to increase on-board image processing, as opposed to transmitting it to Earth for processing. Having a satellite process its own data on-board is ideal because it won’t be subject to the latency…
AMD has been giving Intel strong competition over the past couple of years with their new Ryzen processors. At the same time, Intel was grappling with other issues that had to be patched (and the patches reduced performance in some cases). Now they have released the 11th generation H series CPUs built on the 10nm…
Samsung has created a PCI Express expansion card that you can install RAM modules in. Normally, computers come with typically two or four DIMM slots to install your RAM modules in to expand your computer’s memory. However, some desktop computers only come with two slots. That limits how much RAM you can add to your…
There are several different Arduino products on the market, as well as several ESP32 products. The very first thing we should do here is break down what these two devices really are. To start: An ESP32 is a System-On-A-Chip (SoC). What’s An Arduino? Arduino refers to a platform that runs on Atmel microcontrollers (MCUs). An…
Over the past few years, the Raspberry Pi single board computers have climbed from a mere 1GB of RAM to 8 GB. Just last year, people were shocked by the introduction of Raspberry Pi models equipped with 2GB and 4GB of RAM. The Raspberry Pi foundation also cut the price of the 2GB RPi 4…
The power requirements of a Raspberry Pi computer are dependent on the model and usage. However, you must size your power source to accommodate the Raspberry Pi’s highest possible power usage. Afterwards, you can worry about how long your Raspberry Pi battery will last per charge. The use of a 5 Volt lithium-ion battery pack…
The Raspberry Pi Foundation has released their new Raspberry Pi 4 line of single board computers (starting with the Model B). They did some not-so-surprising things for the Raspberry Pi 4, Model B — such as replace the standard HDMI ports with micro HDMI ports. However, you now have two HDMI ports at your disposal,…
The differences between an Arduino and a Raspberry Pi. Both have significant advantages over each other and this explains how those differences affect you.
NVidia has been manufacturing artificial intelligence-focused single board computers (SBCs) for years. They were powerful, however, they weren’t cheap. The Jetson TX1 and TX2 were both over $400 dollars and equipped for computer vision applications (for example: autonomous cars). One of the most popular single board computers out there right now is the Raspberry Pi,…
The crystal oscillator is a longstanding concept that employs a physical oscillator for clocking to facilitate accurate timing in electronics. These oscillators have been driving CPU clocks, as well as low frequency (and low power) non-CPU clocks in devices that need to be able to use their peripherals (for example: analog to digital converters) while…