91 Results for "8-bit cpu"

Serial Communications
Log from 65c02 Homebrew Computer on breadboard
Serial Input / OutputOne of the key methods of input and output with my home brew is serial communications to and from my development machine (a modern Windows 10 laptop).The serial commmunication protocols I remember from in the 80s and early 90s was...

Honorable Mention
Log from MicroPort
I'd like to talk a little about some of the changes that cut this project down to almost 1/3rd of it's original size. In earlier logs I already mentioned the USB Device Firmware Upgrade (DFU) support, extra USB descriptors, accurate baud-rate calculation,...

Delta coding and some stats
Log from PEAC Pisano with End-Around Carry algorithm
With the new harvest, I estimate that the perfect and maximal orbits under m=1M is around 100K. This starts to make quite a large .h file to include in the sieve generator. Not that it's such a concern but scalability, you know.... And embedding such...

Component research and selection
Log from Home-brew SMT Reflow Oven
The foundational base for this project required some sort of oven. From the design perspective, I needed an oven, preferably one with a good heat-up slope, a temperature sensor, a solid-state relay that was capable of handling “house-hold”...

Mystery of Green and Blue light
Log from Automatic Diet Tracker
I know the title sounds really mysterious, but just have a look at the gathered data.(Date Time R_max R_min G_max G_min B_max B_min Ir_max Ir_min)2014/8/23 0:39:55 55 49 1 0 1 0 25 22 2014/8/23 0:59:1 84 73 2 1 1 0 47 41 2014/8/23 9:7:35 97 87 3 1 2...

Space doesn't stretch forever in all directions...
Log from 1Keyer
One of the goals of this project is to make the code capable of being entered into the Hackaday 1K code competition. This isn't perhaps as easy as it sounds: 1K is not a lot of memory, and the Arduino framework (as generally friendly as it is) isn't...

5th step : add another output ( the speaker )
Log from 2D LED Ping ball
While we were trying to figure out how to display it on a 4x8x32 LED matrix we decided to take a little break and try and wire the speaker to the Arduino board using a resistance. The only issue we had with this was the quality of our speaker. We ordered...

Adding a new part: the Winbond 25Q32
Log from SPI Flasher
The Winbond 25Q128 is a really cool part : high capacity (16 MBytes), very fast, good support for many standard instructions, supports wide bus modes... But it can be expensive depending on the application.I found the little sister 25Q32 : I use 6 of...

Basic Oneway Code Complete
Log from An Old Fashion Acoustic Modem for the iPhone
An Integer Version of the DemodulatorAs the code will be ported to a lowly Arduino using C code, I first looked at if I could use 16 bit signed integers. The answer is strictly yes. Strictly in that the 32 bit result of a 16 bit multiplication is not...

I got it centered
Log from The analog joystick adventure
After many adventures I finally manged to get a proper readings from the analog. at first I tried to work it out using a 555 IC in monostable configuration and to read the result using the pulsein command. My first big task was to find the...

Analogue Wind Vane With Auto Set Up
Log from Arduino GPRS IOT Weather Station
As the amazing online GPRS Weather Station project continues, we have yet another upgrade to the vast array of sensors with a professional analogue wind vane, kindly donated by Vector Instruments. This device will eventually be hooked into the new, upgraded,...

Flood
Log from DIY 100 KWh PowerWall
As we dismantled out old battery rack we discovered that water flooded around a centimeter under the pallet. Its a (very) old basement and we discovered that during winter water infiltrate it and let the floor wet. This is a problem since the wood rot...

Towards a smaller shift register
Log from Clockwork germanium
(see updates at the bottom)_____________________________________________I seem to have solved the problem of cascading the latest flipflops, using better decoupling (and some diodes ?). Here's the new circuit : For the "fast" parts, a pull-down...

[E1][R][X] AirBerries: Learning a custom keyboard layout
Log from Tetent [gd0090]
So I've recently got a fully electrically and mechanically complete CAD model of Tetrinsic and was, once again, doing some research for Tetent, mainly because I don't like how this featureless flat face looks: It turns out that the eteeController...

Cyrillic alphabets in Terminal-BASIC output
Log from Terminal-BASIC
My friend Dylan Brophy inspired me to investigate the ability to output the cyrillic text using different output devices, supported by Terminal-BASIC. 1. Using symbols others then capital latin in identifiers not possible and unnecessary. 2. USART output....

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