Recent Posts

Posted in Uncategorized

Fridge “Model1”

Placeholder website page for Fridge Model1 (used for test purposes)  

Posted in Uncategorized

BattBump – Bad Kickstarter by Cat Clark from Sydney

A horrifically bad kickstarter campaign by ‘Cat Clark’, seeking $30k AUS, is now cancelled. The BattBump kickstarter implied that it…

Posted in Uncategorized

FPC1500 Rohde & Schwarz Spectrum Analyzer and VNA Review

This review is condensed from a full FPC1500 review at element14, click here. There is also a video here: Usability…

Posted in linux radio Single Board Computers

Raspberry Pi 3B+ Wireless Chip – Cypress CYW43455 Block Diagram

The Raspberry Pi 3B+ has quite an interesting wireless chip on-board – quite a lot of functionality! Split up into…

Posted in Uncategorized

Device tree, setting GPIO2_1 as an input

With a BeagleBone Black with the latest image (6th June), I tried this device tree fragment: (Zip file contains the…

Posted in general electronics

1mm and 1.25mm pitch connectors

Some photos to help identify connectors. These ones are JST SH which are 1mm pitch wire-to-board shown here, with surface…

Posted in analog general electronics

Ultra portable pocket PSU

Although a bench PSU is useful, sometimes I prefer testing with something more portable. This ultra portable PSU has a…

Posted in general electronics

7 segment Alphabet

A surprisingly large amount of the ASCII table can be represented with a 7-segment display. The image here shows what…

Posted in general electronics

Crimp pins, sockets and housings

Like it or not, the 0.1 inch spaced (2.54mm) header pins or sockets on PCBs are extremely common. There are…

Posted in general electronics

fpga4fun – any good?

I personally feel a beginner is better advised to purchase a more open platform like Papilio One. The fpga4fun boards…