Monday, 18 September 2017

Bat Detector: electret microphones

Building your own Bat Detector is a relatively easy electronics construction project.


The tricky bit can be locating a suitable transducer or microphone that has a useful frequency response into the ultrasonic range used by common bats.


During the last few weeks I have been testing a number of devices, and here are my notes.

Friday, 15 September 2017

Gambas: working with JSON

The JSON file format is widely used by internet sites when returning data requested by an a.p.i. call.


It is relatively easy to handle JSON data in Gambas, once you have an understanding of its basic structure.


Here we use the Gambas method Json.Decode() in a couple of examples.

Friday, 8 September 2017

BlissFlixx: Pi HDMI config.txt settings

I recently set up another Raspberry Pi as a BlissFlixx set-top box using an earlier post.


Although the system worked, I quickly realised that I'd missed a couple of config settings from my original post.


So this update includes those important settings.

Wednesday, 6 September 2017

The new Nokia 3310: just another stupid phone

I've read a lot of inaccurate customer reviews of the new Nokia 3310 recently, which probably goes to show that most people don't read manuals anymore.


Well I do, and I've just received my new Nokia 3310 from Carphone Warehouse.


So here is a more accurate than average review.