SiGB: Single Board Computers For Fun and Profit

Raspberry-Pi-1024x580

What new skills are you learning?

Skills in one space can and do translate to other spaces.

Got a valve or switch to operate remotely?

Might you want one in the future?

9 responses to “SiGB: Single Board Computers For Fun and Profit

  1. Reblogged this on sparks31 and commented:
    Very useful.

  2. There’s single dongle software defined digital mode radio, too.

    http://www.dstarinfo.com

  3. If you have any programming ability you can do it. I have an Arduino Mega running the entire hydro greenhouse–most of it runs from solar except the fans and pumps. The Arduino site has a bunch of code examples that you can chop up and convert to your ap. The compiler interface is open source/free. ebay has tons of sensors for cheap. Do it. adafruit.com has more goodies you can put on the holiday list.

  4. Too much to do and learn, too little time. And people actually waste hours night after night watching TV?

  5. overkill, to say the least, but I have a raspi2 in my garage, on a long USB power cable, zip tied to a rafter with a cheap ultrasonic sensor dangling over my garage door. A script runs once per minute, checks the state of the door, and the state is should be in from a URL on my hobby server, and makes them match by closing the door if it’s open after 5 minutes. It can only close the door, can’t open it, and almost 100% of the time it’s told to keep the door closed, but sometimes I set it to leave open if I’m going to mow the lawn. The raspberry pi also has a copy of ZoneMinder and a single raspberry pi 5MP camera angled to view anything coming in through the garage door, 5MP is very good resolution for this purpose. If zoneminder triggers, I get a copy of the image on my server, and a text message with the URL to view it. Works, and only cost $25 for the pi, $28 for the camera, $5 for the sensor and $2 for the 5V relay, and I get a door that closes, pictures of anyone crossing the garage, and evidence to use against the kids when they forget to close the damned door. But these same components, coupled with software defined radio, and you can do anything.

  6. 25 bucks too rich? How about $9? — https://www.kickstarter.com/projects/1598272670/chip-the-worlds-first-9-computer — and more here — https://nextthingco.zendesk.com/hc/en-us

    Functionally equivalent to a Pi B+ though not pin compatible. Comes with wifi onboard.

  7. Add a siesmic sensor to a pi and one could have a poor man’s area perimeter defense net.

  8. Arduino first peaked my interest when my 1973 MEP-016D’s (3k military diesel generator) voltage regulator bit the bullet. After much googling I found the original Onan part —> $400! Nuf said…. Being that I have had some experience with electronics and hobby microcontrollers I thought “gee whiz I bet I can build one of these things with a “parallax basic stamp micro controller”, at which point I realized that it would cost a round $40 just for the basic build platform. I then turned my attention to Arduino. —> For less than $25 I built an arduino based digital voltage regulator! The altoids tin was the second most pricey component of them all. I chose adafruits $9.95 “trinket pro” (https://www.adafruit.com/products/2000) arduino for the job.

    The learning curve is not bad at all. If 8 year olds can do it so can YOU. There are tons of tutorials all over the web. Adafruit’s website has enough to keep you occupied for years if you wanted to do them all. The key is to find tutorials similar to your project. However for the complete novice I recommend starting with Arduino’s tutorial page : https://www.arduino.cc/en/Tutorial/BuiltInExamples

    My second project was an automatic chicken door( with built in battery charger). Again I used a trinket pro for the electronics and an old electric window motor to open and close the door. And a 1 amp wall wart for power. Cost: about $70 including the lawn mower battery.

    They key is to learn basic electronics theory, enough to know what you want your circuit to do. Programming the arduino to accomplish the task is not to difficult given all of the tutorials and real life examples on the web.

    Good luck,
    TM

  9. Alfred E. Neuman

    Reblogged this on The Lynler Report.