Category: Electronics
MAX7221 and 14 segment displays

MAX7221 and 14 segment displays

I started some testing of various displays for a project I have in mind for a control panel.  This time around was testing some 14 segment displays.  I did some reading and it seems it's possible to drive this with MAX7221...

AC Dimmer

AC Dimmer

I'd been messing around with low DC voltage projects for some time so wanted to experiment a bit with AC dimming controlled by a microcontroller.

This experiment was with phase control (as opposed to voltage modulation).

The idea is...

Another Cap Touch Scrollwheel (and Slider)

Another Cap Touch Scrollwheel (and Slider)

I saw in a document from Atmel where they had different designs for capacitive touch sensors.  The Scrollwheel looked very interesting as it should be able to not only indicate where someone is touching in respect to how many degrees...

Off The Shelf WiFi LED Controller

Off The Shelf WiFi LED Controller

After making something that did the same thing (see here), I found these things online and they turned out to have an ESP8266 inside that had holes in it to easily solder in some header pins for programming it.  At about $10 it makes no...

WiFi LED Controller

WiFi LED Controller

I wanted to incorporate some LED strips into my automation system and wanted to use an ESP8266 as the basis for it.

After I made it I saw on AliExpress they had something that turned out to do the exact same thing.  Have a look here...

Remote Controlled Relays

Remote Controlled Relays

I wanted to remotely control some simple on/off things such as lamps, tv's etc. using remotely controlled relays.  I first started experimenting with the good old NRF24L01+ chips.  After much testing it seemed that these were not 100%...

ESP12E Module Breakout ( ESP8266 )

ESP12E Module Breakout ( ESP8266 )

Back when I first started playing with esp8266 stuff it quickly became a hassle to breadboard the necessary components to get one of these working.  This was typically just a couple pullup resistors and then a couple switches to make...

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