TECHNO SD 240 Manual operated stencil printer

TECHNO SD 240 Manual operated stencil printer

Posted Saturday 18 May 2013 15:19 Page View Counter 55

After struggling for some time using homemade stencil holders and bits of tape to hold the stencils down we decided to buy a commercial stencil holder. Most seemed to be around the £2000 mark and only take large framed stencils and then I found...

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Raspberry Pi SD Card Socket Replacement

Raspberry Pi SD Card Socket Replacement

Posted Wednesday 15 May 2013 23:31 Page View Counter 32

Managed to break the SD card socket on one of my Raspberry Pi boards when fitting it in a PiBow case and found a replacement SD socket from Farnell for only £1.00 Filmed the repair tonight and added to YouTube so other people who have broken their...

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Dangerous LED Outdoor Floodlights

Dangerous LED Outdoor Floodlights

Posted Sunday 05 May 2013 16:55 Page View Counter 55

A few weeks ago I ordered a pair of “20W 1600Lm LED Garden Outdoor FloodLight 85-265V Pure White Wall WashLights” at £35 each to replace the pair of 150W halogen outdoor lights in the back garden. The seller claimed to be: Item location:...

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Kent Hand Morse Key Restoration

Kent Hand Morse Key Restoration

Posted Monday 29 April 2013 23:44 Page View Counter 47

I had been looking for a Kent hand key from eBay for some time as I plan to try to learn CW (Morse) to use with my Yaesu FT817 on the HF bands. As the Kent keys are around £100 new I thought that a used one would be a good way to try to learn morse with...

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Apple ATI Radeon HD 5870 Fan Upgrade

Apple ATI Radeon HD 5870 Fan Upgrade

Posted Sunday 28 April 2013 20:00 Page View Counter 53

The factory fan on my 2 year old Apple ATI Radeon HD 5870 1Gb Graphics Card finally failed last week after over 8 months of rattles and worsening noises before finally stopping and the graphics card getting a bit warm! As my Mac Pro tower is a 2008 model...

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Android Tablet and Arduino DIY pick and place component selector

Android Tablet and Arduino DIY pick and place component selector

Posted Sunday 14 April 2013 20:58 Page View Counter 79

Following from the Arduino pick and place update blog post video and Automatic component feeders post we have now completed the first version of the Android tablet control software  which uses bluetooth to communincate with an Arduino Mega to control...

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Etching your own PCBs

Etching your own PCBs

Posted Monday 01 April 2013 23:07 Page View Counter 34

Below is a photo overview of how we make our own PCB’s using a UV box and developing the boards. Disclaimer: Wear appropriate safety equipment when handling chemicals and when using UV boxes and lights. Don’t try this at home unless you...

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Vacuum Pickup upgrade

Vacuum Pickup upgrade

Posted Wednesday 27 February 2013 23:31 Page View Counter 43

The basic Chinese Vacuum Pickup pump we have been using on the DIY pick and place machine has been giving us problems with its lack of suction when handling larger SOIC components and didn’t hold them still when moving fast or rotating the parts. I...

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Automatic component feeders DIY pick and place Part 2

Automatic component feeders DIY pick and place Part 2

Posted Wednesday 27 February 2013 19:42 Page View Counter 47

Following from the Automatic component feeders DIY pick and place Part 1 post we have now redesigned the Y axis which pushes the activation arms on the Panasonic component feeders to use a new leadscrew from Reliance Precision Mechatronics...

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Low Voltage Cut off using MAX8212

Low Voltage Cut off using MAX8212

Posted Sunday 10 February 2013 10:53 Page View Counter 64

Since upgrading our solar charge controller to a MPPT model we lost the facility for the charge controller to shut down the inverter when the battery voltage dropped too low. This resulted in a few days when the battery voltage dropped to a very low level...

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