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

Pushing a bt.tn button

The Internet Button

While perusing the various channels on IFTTT recently, I came across one for something called “bt.tn.” My curiosity led me to a Finnish site that sells a very interesting product: a large pushbutton that can control anything that is connected to the internet. The bt.tn comes in various colors and has both Wi-Fi and cellular models. The operation from a user’s perspective could not be simpler. You … Continue reading The Internet Button

Video Arbor

Video Arbor is Back

Nam Jun Paik (1932 – 2006) was an artist who used video displays and electronic parts in his art to comment on technology, culture, and mass communications. In 1990, the builders of One Franklin Town Apartments in downtown Philadelphia chose Paik to fulfill their city mandated requirement of including original public art in their development project. The installation that Paik created consists of three rows … Continue reading Video Arbor is Back

Getting Started with Wearables… in 1983

It seems like every electronics company from large to small is introducing a wearable device these days. As seen at CES 2015, it is all the rage to connect some kind of bodily sensor to the internet, pair it with an app and strap it to oneself. Most of these are fitness trackers that detect some combination of distance, speed, or heart rate. I started … Continue reading Getting Started with Wearables… in 1983