Table of Contents 1. Hardware2. The serial console 1 Hardware The Netgear ReadyNAS 3138 is a 1U rack-mounted NAS server with 4 3.5'' SATA drive slots. I have recently purchased such a device in order to use it as a small home fileserver and decided to...
If you have ever tried to use a third party serial module to send info to an ardueno you may know that generic $1-4 adapters on eBay just don't wok, unless you press the reset button at the perfect time during upload. Or you have gotten this error below...
I lost all the images here! Links and uploads! :( slowly rebuilding... Project Ideas... In order of most-recently-listed, first (read from the bottom-up):12-5-18: YES! 10-24-18: https://hackaday.com/2018/10/24/av-synth-is-psychedelic-analog-mayhem/...
Briefly: 80-wire IDE cables are *great* for high-speed stuff... But the pinout is a bit more difficult than a straight-through 40-wire IDE cable, because the 80-wire cables have shielding (yay!) which is connected to specific pins designated as ground,...
Alexander Shabarshin is designing of inexpensive boards to teach basic digital electronics like logic gates, flip-flops and registers:Educational TTLAlexander created a Four 4 NAND Gate board with a 7400 chip in SOIC package mounted on the bottom.He...
OpenPanzer.org Scout ESC features the Atmel ATmega 328 microcontroller and VNH2SP30 motor drivers:Dual brushed motor controller that accepts both TTL serial and RC inputs. The onboard processor is an ATmega 328 and can be programmed with the Arduino...
What to do when a piece of test equipment is too expensive? Henrik Forstén decided to design and build his own: Cheap homemade 30 MHz – 6 GHz vector network analyzer Vector network analyzer (VNA) are used to measure scattering parameters of high...
Composite video standard defines a signal with 1Vpp amplitude under a 75 Ohms. From that signal 70% (0.7V) is the amplitude of video information which stands above a 0.3V pedestal, while the synchronism information (sync tip) corresponds to the remaining...
Speaking of single-board computer, we are not familiar with, what raspberry pi, banana pi, BeagleBone Black and so are all the classic open-source hardware board. Recently I got a handsome name more exaggerated open source hardware board - Graperain,...
See Chapter 1 over at: https://hackaday.io/page/2303-40107-----------When I first signed up for this account I was like "oh yeah! I'm a pretty cool part-number!" And then I realized the part-number I thought I was was actually the 40106.The other day...
Discussion with @Ted Yapo and @jaromir.sukuba over at one of my project's logs wound 'round to the concept of level-shifting for various CMOS voltage-supplies and TTL... and it got me thinking. The basic gist of that conversation was: 3.3V CMOS outputs...
(Being a list of projects I'd like to work on some day)C62 - expanding my existing C61 design to add useful amounts of program memory and an interrupt system.C121 - a 12-bit RISC machine with a fully featured ISA.C181 - an 18-bit RISC machine, hopefully...
So you have an old microcomputer board that has a UART but no PIO. Maybe one like mine. No chance then of driving a couple of digital I/O lines unless you add a PIO chip? Hmm, let's look at the data sheet for the Intel 8251, a typical UART of a...
I have a custom board using a SAMD21 microcontroller (as used in Arduino Zero and other dev boards). After soldering, the chip is blank and a bootloader is useful to upload code via the USB connection. I found an excellent (as always) tutorial...
I was working with a 7493 counter last night. This is a TTL 4-bit counter with a two independent sections, a divide by 2 and a divide by 8. It also has two reset to 0 pins which are ANDed. You can use it as a divide by N counter where N is less than...