Archive for the ‘R-Pi’ Category

Retropie plug in USB speaker

Monday, February 12th, 2018

A detailed instructions of how to make this DIY retropie plug in usb speaker from Facelesstech: The 2 down sides to my ZeroBoy build I did recently were that it didn’t have a build in battery power and that it didn’t have sound. I seen that the MintyPi was using...

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ZeroBoy – A poor man’s retropie “portable”

Monday, January 1st, 2018

A nice build log of ZeroBoy portable retropie project, that is available on Github: You know when you see something and it give you instant inspiration and you also see a few ways you would also improve it. The thing I seen was wonky resistor score zero it’s basically a...

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Building a Midi hat and jukebox using the Raspberry Pi

Wednesday, October 25th, 2017

Dr. Scott M. Baker has published a new build: I picked up a Roland SC-55 to use with my retrocomputer setup recently, and I figured it would be cool to turn the thing into a standalone midi jukebox, so that no “computer” is required. I also figured this would be...

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The Boat PC – a marine based Raspberry Pi project

Friday, September 8th, 2017

Domipheus has published a new build: In late 2015 I was doing my usual head-scratching about what gifts to get various family members for the holiday season. My wife mentioned making something electronic for my father-in-laws boat, and after a few hours of collecting thoughts came up with an idea:...

Posted in DIY, R-Pi | 2 Comments »

Raspberry Pi soft power controller – the circuit

Tuesday, June 13th, 2017

James Lewis has been working on a Raspberry Pi soft power controller, that is available on github: The RetroPie project enables retro-gaming with a Raspberry Pi. All of the Pi models have enough computing power to emulate the major 8-bit and 16-bit computers of the 80s and 90s. With the...

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Posted in R-Pi | 5 Comments »

Homebrew PiHPSDR

Monday, April 3rd, 2017

g4fre built his own PIHPSDR, that is available at github: Having seen the Apache-labs version of the PIHPSDR I wanted to customise it to fill my needs, so I needed to build my own All the needed information , with the software, is at John Melton's github site The...

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MeArm Pi – Build your own Raspberry Pi powered robot arm!

Tuesday, February 14th, 2017

Here’s an interesting open source project on Kickstarter the world's first robot arm kit for the Raspberry Pi, the MeArm Pi: We believe in helping people understand how the world works. With so much development going on in robotics at the moment, now is the perfect time to get to know...

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Posted in open source, R-Pi, robotics | 2 Comments »

Raspberry Pi RF frequency counter

Tuesday, October 11th, 2016

A Raspberry PI RF frequency counter project from Scott Harden, that is available on GitHub: Raspberry PI RF Frequency Counter with Python Interface. The RF signal clocks a 32-bit counter (SN74LV8154) connected to a 16-bit IO expander (MCP23017) accessable to the Raspberry Pi (via I²C) to provide real-time frequency measurements from...

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Posted in R-Pi, RF | 3 Comments »

Binary clock

Thursday, October 6th, 2016

Frederick Vandenbosch made a binary clock with Raspberry Pi Zero and Unicorn pHAT. He documented the whole process on his blog: At the center of the project are a PiZero and a Unicorn pHAT. The PiZero fetches the time, converts it to binary and controls the Unicorn pHAT with a...

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Posted in clock, R-Pi | No Comments »

An open source 3D Scanner made with Raspberry Pi

Saturday, July 30th, 2016

Boris Landoni from Open Electronics writes about a new open source 3D Scanner made with Raspberry Pi: This being said, we may move on to talk about our 3D scan approach, that consists in using a linear laser, that is, one capable of drawing a vertical line having a constant luminous intensity, and...

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Posted in 3D fabrication, open source, R-Pi | 6 Comments »

Homebrew Raspberry pi shutdown button

Monday, July 25th, 2016

Facelesstech made his own Raspberry pi shutdown button and wrote a post on his blog detailing its assembly: One thing I learn from my last shut down button was that the raspberry pi has internal pull up resistors so I didn’t need a 10k and a 1k pull up resistor on this design....

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Pi Zero POV

Saturday, July 2nd, 2016

Francesco over at Garage Tech posted a detailed how-to on building a Raspberry Pi Zero POV setup to display text from a file using an LED: The most important part of getting the Pi Zero POV to run smoothly is given by how do you fix the payload of this...

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Posted in R-Pi, tutorials | No Comments »

Using a Bus Pirate to connect to a Raspberry Pi

Tuesday, May 3rd, 2016

Scott Dixon describes on his website how he used the Bus Pirate to connect to a Raspberry Pi: The other day I found myself with a Rasberry Pi that I wanted to use but I had forgotten my FTDI UART cable. What I did have is my Bus Pirate v3.6...

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Posted in Bus Pirate, how-to, R-Pi | No Comments »

Raspberry Pi web server using flask to control GPIOs

Wednesday, April 27th, 2016

Rui Santos from Random Nerd Tutorials writes: In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs. You can replace those LEDs with any output (like a relay or a transistor). In order to create the web server you will be using...

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BeagleBone Black GPIO Benchmark

Tuesday, April 26th, 2016

Joonas Pihlajamaa from Code and Life writes, " I've previously made a GPIO benchmark of Raspberry Pi 1 and 2, and have always wanted to see how BeagleBone Black would stack against the Pis. I recently got one so the obvious thing to do was to see how fast the...

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Posted in hacks, R-Pi | 4 Comments »

Home automation with Telegram BOT

Tuesday, October 13th, 2015

Luca Dentella has written an article describing how he developed a bot to control his Raspberry Pi via Telegram:  The project I’m going to describe today it’s a sort of proof of concept that will demonstrate the possibility to remote control sensors and actuators (for example a couple of relays) via Telegram....

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Windows 10 IoT core controlling a Raspberry Pi 2 robot

Friday, August 21st, 2015

Windows 10 IoT Core running a Raspberry Pi 2 robot by Scott Hanselman: Starting with a Raspberry Pi 2, walk through the setup instructions here. You do need to have a Windows 10 today to installing Windows 10 IoT Core but at least it's gotten a lot easier with the...

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Posted in R-Pi, robotics | No Comments »

Raspberry Pi garage door controller

Friday, August 14th, 2015

As a follow up to yesterday’s Raspberry Pi and ARM uC Breakout + DirtyPCBs mini-review post,  hipfan75 has posted the completed Raspberry Pi-based Garage Door controller project: Right now, all of the sensors and actuators are connected to Raspberry Pi GPIOs. At some point I may move them to the...

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Posted in ARM, DIY, R-Pi | No Comments »

Build a drawbot from two CD drives and a Raspberry Pi

Monday, July 20th, 2015

A DIY plotter build using old CD drives and a Raspberry Pi by Norbert Heinz: The battery powered WLAN plotter shown here is composed of parts from two old optical drives, four H bridges, a servo and a Raspberry Pi. Project info at HomoFaciens site. Via Make. Check out the...

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TinySensor server

Wednesday, July 1st, 2015

Steve's TinySensor server project, that is available at Github: Well after almost a year I decided it was time to update this project with improvements to both its hardware and software. On the hardware side, the server is still the original Raspberry Pi model B, but I've mounted the nRF24L01+ radio...

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Posted in R-Pi, sensors | No Comments »

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Recent Comments

  • Drone: The LM7171 used in this very simple design can be simulated in LTspice with reasonable results at 10MHz using the non-encrypted PSPICE model from TI...
  • Jon Jackson: I would be interested in 1 or 2 of your circuit boards. Jon
  • Max: An actual Saturday "detector" built with the same hardware would use the precisely timed slightly varying length of the day (and some built-in astronomy data)...
  • KH: In the old days, these things remained on paper forever as whimsical scrawls. Today, they are brandished about on blogs for the entire world to...
  • KH: So he doesn't really know what he's doing. Yawn. It's sensor-controlled. It's not an oscillator. A leaf covers the window, you're toast. TLV3702? Overkill. The...