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Category: Arduino

RFID / PIN Pad Lock

February 15, 2021
| No Comments
| Arduino, Electronics, Lab, Tutorials

So in my first adventure with the STONE displays I wrote a simple Arduino library to communicate with them, and ported the firmware-side of the included example to my library to make sure it was working properly. However, writing that library was not the end goal. I wrote it to make it to get familiar […]

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STONE Smart HMI Displays

January 31, 2021
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| Arduino, Electronics, Reviews, Tutorials

Stone…what?! What is this “Stone LCD”, you ask? Well, to put it simply, it’s a LCD display with an integrated processor that will handle all the “User-Interface” (UI) for you. You only need to “design” the UI of your application in a PC-based editor, and then transfer it to the LCD. From that point onwards, […]

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SDrive-Max Using a cheap 2.4 TFT LCD

June 25, 2020
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| Arduino, Atari, Development, Tutorials
SDrive showing a clear picture

One of the things I’ve been interested in for the last year or so, is developing for the Atari family of 8-bit computers. I haven’t done a lot yet, but I’ve been slowly getting software, docs, and hardware to start writing code with all the tools I could possibly need. I had already built a […]

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ZEPPP : Zero External Parts PIC Programmer

September 2, 2018
| 30 Comments
| Arduino, Development, Electronics, Lab, Microchip PIC, Uncategorized

A couple of months ago I was asked if I could prepare a sort of workshop on one of my favorite topics: ASM Programming for PIC microcontrollers, which I of course accepted on the spot.  Now, I wanted to include a couple of “hands-on” lab sessions in this workshop, and because of this, I needed […]

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Arduino’s broken Random()

November 25, 2017
| No Comments
| Arduino, Development, Misc

If you are using your Arduino’s PRNG (Pseudo-Random Number Generator) for anything more serious than flashing random lights for your Christmas decorations, there’s a chance you might run into some unexpected issues, as the random() function in Arduino seems to be somewhat broken. Why? Let me explain. Background Most basic random number generators in programming libraries and platforms are based on what is called […]

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An update to my desk clock

June 25, 2017
| No Comments
| Arduino, Electronics, Lab

Like a year ago I made myself a nice little desk clock that has worked fine since then. But recently I revisited the project to do certain improvements. For starters I wanted a smaller board so I could fit it inside an enclosure.  I also wanted to power the clock from a rechargeable 18650 battery and add […]

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Custom PCB for SIO2Arduino

January 3, 2017
| 4 Comments
| Arduino, Atari, Electronics, Lab

A while ago -and after a couple of trips to our local “flea market”- I managed to get my hands on a fully working vintage Atari 800XL. It took some tests and soldering work, but I ended up with a fully working 800XL with a XC12 cassette deck (I even got a defective cassette deck that it’s mostly […]

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ORC-KIT with standalone H-Bridge Drivers (and some updates)

December 22, 2016
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| Arduino, Electronics, Robotics, Tutorials

So in the sort of tutorial I wrote about ORC-KIT I mentioned that it was possible to use other boards instead of Adafruit’s friendly motor shield, and in fact, there was space in the board for a couple of very cheap and widely available L9110S Dual H-Bridges, which should give you more control over the build, and […]

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Introducing ORC-KIT!

October 9, 2016
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| Announcement, Arduino, Electronics, Robotics, Tutorials

Earlier this year I embarked on the journey of designing a simple but expandable robot that any electronics enthusiast could build. I knew several nice kits from brands like Lego, Makeblock, OWI Robotics, etc, but I considered them to be normally either too expensive or too simple and limited. There are also many generic unbranded kits on eBay which suspiciously […]

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TFT Adventures (Playing with a ILI9341-based display)

August 10, 2016
| No Comments
| Arduino, Electronics, Lab

Not long ago I purchased a few 320×240 touchscreen displays from ebay that looked pretty decent and were also fairly cheap. They conform to the Arduino shield form-factor, so they snap directly  onto any standard Arduino board, making them really easy to test and use. They also have an integrated microSD slot (connected to the same bus used by the display controller) which is a nice touch and widens […]

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