I decided to upgrade the office with an automated cellular shade for two reasons: 1) I like the privacy of having shades that automatically close at sundown, and 2) it’s more convenient to operate the shade from the desk rather than having to get up and climb around the table. The vendor I decided to …
Read MoreAuthor: admin
Raspberry Pi Nixie Tube Clock Prototype
Nixie tube clock prototype using IN-12 Nixie tubes with a Raspberry PI. 74141 / K155D drivers are used with 74HCT595 shift registers.
Read MoreA temperature and humidity probe for the Elk M1 Gold
I design and build a temperature and humidity probe for the Elk M1 Gold Alarm / Home automation panel. A parallax propeller microcontroller and an SHT11 sensor is used.
Read MoreCooper Wiring Devices TR7735W-BOX night light teardown
A futile attempt to tear apart an LED night light in order to alter the sensitivity of the photocell.
Read MorePropeller-powered IN-12 Nixie Clock
My first self-designed Nixie Tube clock prototype. I use IN-12 Nixie tubes along with a parallax propeller microcontroller and a UP501 GPS module.
Read MoreNixie Tube Web Counter
I design a hit counter for smbaker.com using a Nixie Tube display module and a parallax propeller microcontroller.
Read MoreA python API for the Nest Learning Thermostat
I installed one of the nest Nest Thermostats (http://www.nest.com) not so long ago, but there are several things I wanted to automate. In particular, I wanted to be able to schedule the fan to turn on and off periodically to circulate the air in my house. The nest doesn’t have a way to do this, …
Read MoreScott’s iPad digital audio optical receiver / amplifier
Unhappy with existing receiver options, I decided to build my own digital-audio receiver. I used IN-13 nixie bar graphs, a MiniDSP/MiniAmp stack, and an airport express. I even added an Alps MotorPot controller by a parallax propeller microcontroller so the volume can be changed from a web browser. Eventually modified this project to play Pandora using a raspberry pi.
Read More