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Click to view Sinclair ZX81 Kit Build

Sinclair ZX81 Kit Build

Posted Tuesday 13 October 2015 11:51 Page View Counter 1053

Several years ago we purchased a mint conditioned unopened Sinclair ZX81 Computer Kit from eBay with the intention of building it sometime and having another classic ZX81 computer which was the first computer I had when I was 7 years old. After...

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Click to view Hope One LED Light GoPro mount

Hope One LED Light GoPro mount

Posted Wednesday 30 September 2015 20:54 Page View Counter 1061

With the dark winter evenings drawing in we are starting to use the bikes more at night than in the day time due to work commitments to try to keep fit. We purchased a set of Hope One LED lights earlier this year and they come with an easy to use...

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Click to view QuietPC Silent Fan Upgrade

QuietPC Silent Fan Upgrade

Posted Saturday 22 August 2015 13:51 Page View Counter 585

Last week we ordered a new compact pc for the loft workshop and a new wide screen monitor to use for our electronics development and also to use with our SDR radio. We purchased a Quiet PC Sentinel Mini system from www.quietpc.com as the website...

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Click to view USB Smart Charger with Bluetooth LE

USB Smart Charger with Bluetooth LE

Posted Tuesday 11 August 2015 15:34 Page View Counter 832

For the past few months we have been working on a set of new USB smart chargers which run from our off grid 12V system to be used for charging tablets, smartphones and other devices which charge from a USB port. The aim of the new smart chargers...

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Click to view HackRF One Shielded Case Installation

HackRF One Shielded Case Installation

Posted Saturday 01 August 2015 12:19 Page View Counter 1114

In 2014 we purchased a HACKRF One SDR radio and quickly found that the receiver was being swamped with local interference from nearby transmitters and other equipment. We installed the optional HACKRF EMI Shield which helped to remove some of...

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Click to view Powerpole Fused Distribution Board Case

Powerpole Fused Distribution Board Case

Posted Friday 31 July 2015 22:09 Page View Counter 689

Since building the Powerpole fused distribution boards we have been planning to make a case to prevent accidental short circuits on the pcb boards when power is applied. We looked at commercial cases and found some suitable plastic boxes but we...

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Click to view Designing a PIC24 Development Board

Designing a PIC24 Development Board

Posted Wednesday 08 July 2015 11:47 Page View Counter 741

Several of our recent projects have used a 16 bit PIC24 microcontroller from Microchip.  The PIC24FJ128GC006 contains two 16-bit ADC channels which makes it useful for measuring voltages more accurately than the 10 or 12 bit ADCs you normally...

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Click to view July Storms and Flooding

July Storms and Flooding

Posted Tuesday 07 July 2015 12:53 Page View Counter 497

Lightning over Poole from the Studland road viewpoint The full size image of the photo above is on my Flickr pages. On the 3rd July we had a huge thunderstorm and rain storm in the evening which resulted in over 30mm of rain coming down in a...

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Click to view Windows 10 IOT Libraries for Raspberry Pi

Windows 10 IOT Libraries for Raspberry Pi

Posted Monday 15 June 2015 23:01 Page View Counter 726

Since the announcement that Windows 10 IOT was being released to use on the Raspberry Pi model 2 we have been experimenting with the platform and Andrew has been busy converting the Python 2 and 3 libraries he had written for the Raspberry Pi for...

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Click to view DIY Pick and Place Speed Updates

DIY Pick and Place Speed Updates

Posted Tuesday 19 May 2015 17:06 Page View Counter 880

Since adding the various modifications to the DIY pick and place machine in the past few months we have now been able to tweak the speed and acceleration of the stepper drivers to improve the machines placement times. We started by adjusting the...

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Click to view DIY Soldering Robot Project Completed

DIY Soldering Robot Project Completed

Posted Monday 04 May 2015 13:24 Page View Counter 2531

The DIY soldering robot which we have been building in our spare time over the past few months is now working and we have been able to solder some test Raspberry Pi expansion board headers with the machine. Before starting on this robot we looked...

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Click to view Soldering Robot Designing the Motor Driver Board

Soldering Robot Designing the Motor Driver Board

Posted Tuesday 07 April 2015 23:00 Page View Counter 851

For several months now we have been working on a new soldering robot to solder the 40 pin headers onto the raspberry pi expansion boards we build and sell on our AB Electronics UK website.  The mechanical side of the design is almost complete...

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Click to view Soldering Robot Temperature Controller

Soldering Robot Temperature Controller

Posted Monday 06 April 2015 22:17 Page View Counter 875

With the mechanical side of the soldering robot well underway the next stage was to begin work on the electronics that will control it.  In a previous post I wrote about our decision to use the Antex TCS230 soldering iron elements and the discovery...

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Click to view Soldering Robot Solder Feeder

Soldering Robot Solder Feeder

Posted Wednesday 25 March 2015 19:00 Page View Counter 1119

Today we finished the machining and building of the first of two solder feeders for our DIY soldering robot project. The main body of the feeder was milled from 10mm aluminium and the tensioner roller assembly was milled from 6mm aluminium sheet....

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Click to view HackRF One SDR EMI Shield installation

HackRF One SDR EMI Shield installation

Posted Monday 23 March 2015 12:00 Page View Counter 1345

In September 2014 I pre ordered a HackRF One SDR radio from Passion Radio Shop and on the 13th March 2015 it arrived! Initial testing with the HackRF showed that it was being swamped with external RF from nearby transmitters. Approximately one...

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