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Recent news

  • Amplifier working Just recently I got my honey badger of DiyAudio fame working properly! (My amplifier build)
  • Bristol show every year I go to the Bristol audio show, this year was no exception. I saw some really nice systems there. (Bristol Audio Show)
  • Photo taking You mave have noticed recent photos are looking somewhat better. I've been reading about taking photos (Photography masterclass video)

We are on github

The coders corner has a (fairly active) account on github. From Arduino libraries, Joomla to Hugo through to examples for the datacomms section, why not take a look.

Recent articles and blog posts

Designing a simple PGA2310 based preamplifier with network control

By dave on June 2, 2017

At the moment I am prototyping a high quality pre-amplifier based around the PGA2310 volume control and an op-amp buffer input with RF filtering. Each channel will be selected by relay, along with gain adjustment for each channel in terms of increase in dB. Each channel will be assigned a name that can be changed easily in software and stored along with default volume and channel in the on-board EEPROM.

Tidy up of my honey badger amplifier

By dave on May 18, 2017

Over the past month or two, I’ve finally fixed up some snags that I had when building the honey badger amplifier. When I first built it, I had a difficult time trying to track down dry joint on one of the start boards - it also had a bad IDC connector delivering power to it. In addition the PSU boards had a fault and needed to be stripped down and moved to new boards.

SPI Serial Peripheral interface for Arduino tutorial

By dave on April 9, 2017

In this tutorial, I present a fictional SPI chip that we will use for the sake of example. This chip has two LED’s and controls them over SPI. It will help us to understand SPI with a real worked example. Following on we will build a real world circuit, using the SPI library, to see how easy it is to use SPI on Arduino. Serial Peripheral Interface (SPI) Introduction Serial communication allows less pins to be used to communicate information between two chips or boards, and also removes a whole class of timing issues that are associated with parallel communication.