Update: RisingHF Gateway RHF0M301 with Loriot Community Network

It’s been about a year since I posted an unofficial manual for getting the Seeed Studio 915 MHz RisingHF Raspberry Pi gateway up and running with Loriot. In that time, I had hoped that there would be more resources available for enthusiasts to find information about setting up gateways, nodes and sensors. However, it looks like complete and reliable information is still hard to come … Continue reading Update: RisingHF Gateway RHF0M301 with Loriot Community Network

Water Metering With Home Assistant

I’ve pretty much settled on Home Assistant as my DIY automation platform. While it is not perfect, it has the right mix of features, simplicity and customization for my needs. I also like that it is written in Python and includes support for custom dashboards using HADashboard. I’ll be adding additional posts about home automation platforms in general, but for now I want to concentrate … Continue reading Water Metering With Home Assistant

Septa key machines

Anticipating Septa Key

Since Septa is on the verge of introducing their new fare technology, Septa Key, to the Regional Rail system, I thought this would be a good opportunity to reminisce about one of their earlier automated fare systems. In the early 1990s, Septa provided orange refrigerator-sized ticket vending machines at most Regional Rail stations. I scoured the web for a picture of one of these hulking … Continue reading Anticipating Septa Key

HD Radio waveform

Listening to HD Radio with an SDR

“HD Radio” is the technology by which US radio stations broadcast digital audio along with their regular analog signal. Standard FM radios only receive the analog signal and ignore the digital data. You need an HD Radio to listen to the digital audio. HD radios are most popular as features in newer automobiles, but adoption outside of car radios, as well as awareness by the … Continue reading Listening to HD Radio with an SDR

Seeed Studio LoRa Kit

Getting Started with LoRa

LoRa is a radio technology for long range, low bit rate communication among sensors (temperature, light, location etc…) and other IOT devices. The sensors send their data to a radio receiver known as a gateway. The leading protocol used by sensors and gateways to manage communications, frequency, data rate and security is known as LoRaWAN. The gateway transfers the sensor data to the cloud so … Continue reading Getting Started with LoRa

Ardmore, PA Radio Shack Closed

My local Radio Shack closed on June 27, 2017 after 50 years in operation. This was my go to place for electronic parts and occasional electronics since 1988 and it will be greatly missed. Originally the store was listed as one that would remain open, but it was not to be. In addition to the store’s longevity, some of the staff had been there for … Continue reading Ardmore, PA Radio Shack Closed

SDR dongle

Sniffing GSM with SDR

I’ve been fascinated by software defined radio (SDR) for years but investigating the GSM cellular network has always been just a little too challenging and slightly out of reach. All of that changed earlier this year when someone finally posted a workable, step-by-step guide for decoding (but not decrypting) cellular (GSM) radio traffic. For those not familiar, SDR involves moving much of the functionality of … Continue reading Sniffing GSM with SDR