Repairing an Axon AX 100 guitar-to-MIDI converter (part 1)

AXON AX-100 Front

Gareth writes: I’ve wanted a Guitar-to-MIDI converter (a.k.a. a guitar synth) for yonks. In particular, I’ve been looking for an Axon AX 100 unit; they were renowned for the speed and accuracy of the tracking that the proprietary neural network software could achieve. Unfortunately the AX 100 has been out of production for years, and used units are commanding prices in the high hundreds of pounds. However, I recently found a reasonably priced spares-or-repair unit on eBay, so I picked it up.

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Edinburgh Hacklab on TV!

On Tuesday, Edinburgh Hacklab was featured on The Fountainbridge Show on STV Edinburgh. Their reporter did a few live segments from the Hacklab and featured Atomic Arcade, laser cutting, LED hats and 3D printing, as well as some information about events that the Hacklab runs throughout the year. Unfortunately the finished STV logo wasn’t shown Read more about Edinburgh Hacklab on TV![…]

Arduino to Next Level Workshop, November 2014

A one-day Arduino workshop hosted by Edinburgh Hacklab. Following on from Getting Started with Arduino Workshop the workshop assumes some previous knowledge and use of Arduino. If you’ve attended the Arduino workshop at the Hacklab then your ready to continue learning where you left off. Topics covered include: Using a Liquid Crystal Display (LCD) Saving Read more about Arduino to Next Level Workshop, November 2014[…]

Arduino for Beginners Workshop – Saturday 25th October

Arduino is a micro-controller platform designed for ease of use and learning. It allows the creation of electronically controlled projects, whether it be simple blinking lights, a robot or a music generator. This workshop is aimed at beginners. You don’t needs any previous electronics or programming knowledge or experience. Topics covered include: An introduction to Read more about Arduino for Beginners Workshop – Saturday 25th October[…]

Show and Tell – Tuesday 16th September

Many people in Hacklab community are working on interesting projects or have something cool that they would to share with others. To give a chance to spread the word we are having a Show and Tell session on Tuesday 16th September from 8pm at the Hacklab It will be pretty informal, each talk will be Read more about Show and Tell – Tuesday 16th September[…]

Arduino for Beginners Workshop – Saturday 7th June

Arduino is a micro-controller platform designed for ease of use and learning. It allows the creation of electronically controlled projects, whether it be simple blinking lights, a robot or a music generator. This workshop is aimed at beginners. You don’t needs any previous electronics or programming knowledge or experience. Topics covered include: An introduction to Read more about Arduino for Beginners Workshop – Saturday 7th June[…]

Eigentesting

my task

"connect 80k simultaneous clients, logging in and out at an overall rate of 50Hz, and requesting pages at an overall rate of 100Hz"

lets model a client as a random walk on a state graph (a Markov chain), where the action taken by a client is drawn from a distribution conditioned on the current action. (TL;DR we will bootstrap frequency estimates from this representation using eigenvectors)

MarkovControl

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