Category Archive: Radio

Aug 16 2017

Si4463 Radio Library for AVR and Arduino

This is a library for use with the Si4463 radio IC from Silicon Labs, used (or will soon be) in some of my projects. The Si4463 is configurable in a ton of different ways with options for modulation, packet format, CRC algorithms and has a high output power of up to +20dBm (100mW). The Si4463 …

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Aug 17 2013

Bluetooth Net Monitor v2

This post only goes over the new stuff in the network monitor, I’d recommend having a look at the original post first. New PCB design The new PCB is now an almost single board design, just a separate board for the USB connector. The old monitor had a small main board which connected to the …

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Jan 09 2013

Bluetooth Net Monitor

A newer version of the Bluetooth network monitor can be read about here, but I’d recommend carrying on reading this post first. Whenever I want to see why a download is going a little slow or getting lag on an online game I’d have to log in to my routers web page or SSH in …

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Jan 06 2013

Getting Bluetooth modules talking to each other

Before we start, please note that most Apple devices don’t support the virtual serial link profile that these modules use. A really easy method of making your projects wireless is to use serial Bluetooth modules, these modules take standard serial data and transparently transmit it via Bluetooth to another connected Bluetooth module, no extra code …

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Jan 01 2013

nRF905 AVR/Arduino Library/Driver

The nRF905 is a radio transceiver IC similar to the well known nRF24L01, but operates at 433/898/915MHz instead of 2.4GHz, has a much longer range and a few extra IO pins. However the nRF905 data rate is only 50Kbps compared to nRF24L01’s 2Mbps. This library offers quite a bit of flexibility: Optional use of interrupts, …

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Jul 25 2010

FM Radio Transmitter

Here’s a nice little FM radio transmitter, it has a range of about 100m – 200m with a 12V supply, decent audio quality and the microphone is very sensitive, with a 5pF – 30pF variable capacitor the transmitter can tuned between 87.5MHz – ~98MHz, however at the higher frequencies it’s much less stable and more …

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