Category Archives: Wireless communication

More on ESP8266 at Scargill’s Tech blog

The ESP8266 wifi modules are now coming in various versions, almost faster that anyone manages to update. Scargill’s Tech blog seems to be constantly (as of jan 2015) investigating and commenting the ESP8266 and ESP-x modules. Take a look in his ESP8266category.

The forum is, of course, still a good source of information.


2.4GHz scanner using RFToy

Working with 2.4GHz tranceivers can be frustrating because you must know that the sender actually is sending and that the receiver is actually receiving. After that, you must be sure that the protocols match. To help with the first part, verifying that the sender is actually sending, I’ve combined RFToy with poor mans 2.4GHz scanner. I now have a battery driven device that can be used to see if my sender is sending. In addition, it will indicate approximate channel being used. I basically only modified the “poor mans 2.4GHz scanner” to use RFToy pins and display. The picture shows a snapshot of the scanner while turning on a Sony PS3 wireless controller. Code is on github.

Continue reading 2.4GHz scanner using RFToy

Bridgeduino – Wireless Arduino HUB and shield

After examining RFToy, I came across this BridgeDuino prototype by Hazim Bitar. According to him it “is a Swiss army knife PCB for rapid networking of inexpensive wireless communication modules”. It currently supports:

IR Transmiter LED 940nm
IR Receive 38Khz
RF433Mhz Receiver
RF433Mhz FS1000A Transmitter
Bluetooth HC-06 & HC-05

Its  open hardware and open source. It can be used as an Arduino shield or separately with an Arduino Pro Mini in a socket.

RFToy – interfacing with RF modules

Today I saw this post at Hackaday refering to a RFToy, a cool gadget from that might be useful when working with different RF modules out there. There is a cool demo showing how to record signals from the remote control of a typical wireless power socket and playback to simulate the remote. It’s the same guy that has written about using Arduino to interface with off-the-shelf wireless temperature, humidity, rain, and soil moisture sensors. I think this gadget can be very useful for me while experimenting with remote sensors for my weather station. I’ve ordered one.
RFToy 1.0