Posted: Wednesday 27 February 2013 19:42
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 (part number LBF5-0375-150MM) which has a 9.53mm lead and 5mm diameter. This gives us a much... read more
Posted: Sunday 10 February 2013 10:53
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 and risked damaging the batteries.
To solve this we made a low voltage cut-off circuit using a... read more
Posted: Wednesday 06 February 2013 17:36
The new Raspberry Pi model A arrived today after a mixup where Farnell sent us another model B yesterday.
The new Model A on the left with a Com Pi board and Wifi dongle. Older Model B on the right.
As the new Model A is supposed to use a lot less power than the older model B, we tested both boards under different conditions using a TTi 1705 bench... read more
Posted: Wednesday 23 January 2013 10:49
After treating myself to a new Yaesu FT 817 HF, 6m, 2m & 70cm transceiver, I also ordered a CAT to USB control cable from Radioarena (Yaesu USB Programming / CAT Cable for FT-100 / 817 / 857 / 897) which arrived 8 days later.
After struggling to get the recommended drivers to install on my Windows 8 computer I found that the Prolific USB to Serial... read more
Posted: Saturday 05 January 2013 10:46
After seeing other blog posts about people’s workshops, I thought I should add a post about our small home workshop which is in the loft of our terrace home.
The loft space is 4.1m long, 3.2m wide at its widest point and 2m high in the middle.
At one end of the room are storage trays covering the wall with hundreds of trays of resistors, capacitors,... read more
Posted: Saturday 01 December 2012 20:08
Following from the Panasonic component feeder mods and the build of our manual pick and place machine (pick and place part 1 & pick and place part 2) we have started to build an automatic stepper motor driven controller for the component feeders which will have push button control for selecting the components and also the ability to control via... read more
Posted: Saturday 01 December 2012 19:46
While building pcbs on our manual pick and place machine we have been looking at various options to hold the PCB boards still while placing the components but without having to use complex clamps to hold the boards in place.
To solve the problem we tried holding the boards using small neodymium magnets and found that when using a 1mm thick steel back... read more
Posted: Sunday 25 November 2012 22:11
Since installing Windows 8 earlier this month I haven’t been able to use Google Chrome as the default browser for links when opening from Google Talk.
Even when the Defaults control panel was showing Google Chrome as the default browser any links clicked in Google Talk would open in Internet Explorer and not Chrome as it should have.
A workaround... read more
Posted: Tuesday 20 November 2012 23:15
Following feedback and supply problems with the 16 bit ADC chip we had been using on our popular ADC Pi board which we sell on www.abelectronics.co.uk we have been working on a new version of the ADC board and we have now launched version 2 of the ADC Pi board.
The new version uses the MCP3424 ADC chip from Microchip and is an 18 bit version ADC. The... read more
Posted: Tuesday 13 November 2012 19:02
To replace the diy surface mount component feeder used on the pick and place part 1 & pick and place part 2 posts, I was able to source 11 x 8mm Panasonic Ratchet Type Component Feeders (part no 10488BD059, specification 8WX4P Emboss) from eBay for £20 each.
We had originally planned to make our own component feeders and have the various... read more