Blog

A quick dive into Oscilloscopes: My first hands on experience with oscilloscopes

aabhas — Sun, 05 Dec 2021 15:48:00 GMT

Introduction to the World of Oscilloscopes For a person like me who is interested in electronics, Oscilloscope serves as almost a gateway to heaven which can unravel the deepest ...(read more)

I Spy With My Digital Eye .... a Pico PI

dougw — Thu, 14 Oct 2021 08:33:00 GMT

The Allure I have a stereo microscope that is extremely useful, but it is not good at everything. Specifically: it isn't any use in a blog where you need viewers to see something with high magnification it can be fatiguing to hunch over the microsc...(read more)

Multi Colour Oscilloscope Clock

wolfgangfriedrich — Wed, 13 Oct 2021 02:05:24 GMT

Inspiration A long long time ago, in the early days of my VHDL endeavors, I set out to re-use an analog 20MHz scope that was sitting in a corner of my company's lab as a clock display. Inspired by PicOClock from Bruno Gavand (Oct 2007), I wa...(read more)

Off the Shelf - Outdoor Lighting System Revamp

genebren — Thu, 30 Sep 2021 21:56:24 GMT

Back in October 2020 I started a series of blogs on an "Smart Solar Lighting Project". The idea was as follows: Li-Ion charger, with programmable charging current level to find the maximum power point (as opposed to true power po...(read more)

Arduino Nano as Raspberry Pi IO expander w/ I2C - VOILA ! - the copter joystick controls I2C to Raspberry Pi WORKS !

robogary — Wed, 29 Sep 2021 23:33:57 GMT

Off the shelf and open the storage container.This project is 4-5 years old, it has had many spec changes over the years. It features a Raspberry Pi, a GPIO expander to solderless breadboards, I2C servo hat, and an Arduino Nano wired on the I2C ...(read more)

Arduino Nano as Raspberry Pi IO I2C expander PART 4 - humbling persistence, scope creep, Python Voodoo, and over the hump

robogary — Tue, 28 Sep 2021 01:45:04 GMT

The next update will be the final project completed !! Test code of 5 bytes of data from the Arduino to the Raspberry Pi is working and being melded with functionality for meeting the final project goal + some scope creep that just fit in too well.&n...(read more)

Arduino Nano as Raspberry Pi IO I2C expander PART 3 - Python Voodoo - the I2C bus - byte me !!

robogary — Wed, 22 Sep 2021 01:14:32 GMT

Off the shelf Part 3 - Getting the I2C to talk there are several simple examples of Raspberry Pi to Arduino I2C on the webIn studying them, I'd selected on in particular example that was a best fit:demonstrated both data read & writeuse...(read more)

Arduino Nano as Raspberry Pi IO I2C expander PART 2 - the I2C bus - copter rotor control via I2C joystick -

robogary — Mon, 20 Sep 2021 14:43:09 GMT

Off the shelf Part 2 - Please see part 1 for the hardware overview - I'll sketch up a schematic later, its not complicated, mostly IO on I2C and their 3V power supplies.The DC brushless motor and driver is a touch more involved, but still pretty simp...(read more)

Arduino Nano as Raspberry Pi IO I2C expander PART 1 - a.k.a. copter rotor control via I2C joystick

robogary — Mon, 20 Sep 2021 02:39:09 GMT

Off the shelf, and open the container. This project is 5-6 years old. It features a Raspberry Pi mounted on medium density fiberboard (MDF).The MDF provides a solid base that parts can be screwed down or hot glued, taken apart and reworked multiple t...(read more)

Resurrected RC cars

parisi — Fri, 10 Sep 2021 12:39:05 GMT

I have 48 years old but I never left the passion for RC toys. I have 2 children and I bought RC toys (especially a lot of RC car) for them and for me. Now I have lots of rc cars without remote controls in my garage that are nostalgic, beautiful, vari...(read more)

Radio signal tester

manojroy123 — Fri, 10 Sep 2021 11:43:13 GMT

My project is about building a radio signal strength tester for existing signal. So that you can test for superimposition of signal for your own radio project. Background on Radio technology and Some important key points to know :- Radio:-t...(read more)

Mario Mega-Figure Arcade Machine

dwinhold — Tue, 07 Sep 2021 15:48:17 GMT

So, I was looking around for a box of incomplete projects and I came across this. A just started (2 years ago) a Raspberry Pi arcade machine. So, I figured why not complete it!! Now go back in time 1 week. Our family’s friend’s...(read more)

Laptop Repair

masterrx — Wed, 01 Sep 2021 11:42:19 GMT

I had just bought a second hand laptop Samsung Brand with the spaecifications as follows:ntel Core i54Gb RAM with 120 Gg HDD.Unfortunately it has issues, such as:Dead battery but still runs whenever the power charger isconnected and plug in an outlet...(read more)

Fireworks Simulation with Optical Fiber Cable (OFC) Day 8 final post.

colporteur — Sat, 28 Aug 2021 23:27:14 GMT

Mounted the controller breakout board (i.e. perf board) and routed the RGBLED OFC cables through cable holders. Cable holders are just pieces of heat shink tubing, super glued to back board. In addition mounted the power supply assembly and routed po...(read more)

Fireworks Simulation with Optical Fiber Cable (OFC) Day 7

colporteur — Fri, 27 Aug 2021 23:15:34 GMT

Day 7 was a revisit to the electronics. The hired help completed the display panel knitting. It is now available to work to start assembly. The upper left corner of the display panel will hold the perfboard/controller. Cables extend out to each ...(read more)