I have a Teenage Engineering Pocket Operator (PO-12) and it’s pretty cool. One thing I felt was missing, though, was a way to tap a button to set the BPM value - the 3 presets (Hip-Hop, Disco, Techno) and dial adjust isn’t very specific. It does however have a sync feature that allows you to connect multiple Pocket Operators together (and I’ve heard some other devices as well) - and keep them in sync… which got me thinking, could one create the sync signal using some simple electronics and programming? Project time…
So, this is how to display your Raspberry Pi USB webcam video to your screen (without X windows). It’s all rather simple once you Google all day looking for how to do it…
While trying out a Ubiquiti wifi solution, I ran into one AP not getting installed correctly. It was showing as either
pending authorization - the latter I think means that it was trying to connect to a wifi netowork rather than the ethernet network it was plugged into.
In order to get Platformio to build a project based on ESP8266 release candidate, I had to do the following - basically these instructions:
These are the settings that got me up and going- before this I was getting
warning: espcomm_sync failed error: espcomm_open failed error
Here’s a quick (couple hours with my sloppy mistakes) mashup of two Arduino examples - the ES8266 (HUZZAH from Adafruit) WiFi controller and a DHT22 temperature and humidity sensor. This is the start of a bigger project which tells outdoor and indoor temperature along with accurate time (more on that to come), and probably wind speed, etc…
Update to using an ATtiny85 in a Similar Way To An Adafruit Trinket - specifically to run the Adafruit Neopixel library
I’m continuing to try and ‘cheap-ify’ my per effect cost for my Halloween decorations. I ran into some issues last night trying to get an Arduino sketch that used the Adafruit Neopixel library and ran on a Trinket to run on a straight ATtiny85. The solution was to select the chip in the Arduino IDE and using an AVR programmer, burn the ‘bootloader’.
I’m digging up some old code that I did a long time ago - It’s a software-based pulse width modulator (PWM) for AVR microprocessors. The basics came from this technote, and the code was based on this sample project from AVR.
To get a Adafruit Trinket Arduino sketch running on a straight-up ATtiny85, I did the following: