Creating a new open source IoT platform, the MQTT server/broker
Allan So far we have come up with the architecture and the database structure for the new IoT platform. Next we should address the MQTT communications portion. The MQTT protocol is…
Creating a new open source IoT platform, creating the database, part 2
Next we will need to create the database structure that represents the hardware. This will include the hub, gateway, node, and sensors. As devices (gateways, nodes, sensors) are added (or…
Creating a new open source IoT platform, creating the database, part 1
In the previous posts we talked about how to assign ids and organize the data, but ultimately we will need to store this information somewhere and a relational database (such…
Creating a new open source IoT platform, assigning ids to data
In the course of developing an IoT platform the packet data structure needs to be decided. This is the data structure that is proposed to be used to send data…
Creating a new open source IoT platform
As of recently there have been a lot of new IoT products and services emerging ranging from Microsoft’s Azure, to Amazon’s AWS, to various home appliances in the home. Ever…
Fun with e-paper and Arduino using an Adafruit Grand Central M4 and IT9851
Had some fun playing around with an e-paper display this last weekend. Chose the Adafruit Grand Central M4 (SAM51) because of the large amount of flash and SRAM, but alas…
Investigating Blue 125khz RFID tags (from China) bought off Amazon with a Proxmark3
My Proxmark3 RDV40.1 finally arrived yesterday and I have been busy investigating this RFID reader/writer/copier bought off Amazon. It came bundled with soem blue plastic RFID tags (125khz and 13.56Mhz)…
Reading FeliCa RFID with a RC-S620S and Arduino
After some more playing around with RFID tags and trying to read some FeliCa tags with the Proxmark3 it was obvious I needed a reader designed for FeliCa. FeliCa was…
RFID development with a Proxmark3 RDV4.01 – first time use on MacOs
As I am occasionally doing more and more RFID related tasks at work, and curious about the data stored on all these RFID devices that I see more and more…
Installing MacOs brew without sudo
In trying to setup the proxmark3 environment I ran into a frustrating problem, it was setup to be installed with brew… oh no. My current MacOs version is MacOs BigSur…