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Posts Tagged ‘computer’

Minimal ATSAMD21 computer

Thursday, May 9th, 2019

Johnson Davies shared detailed instructions of how to build an ATSAMD21-based computer on a prototyping board using a 32-pin ATSAMD21E: If you're looking for something more powerful than the ATmega328 in the Arduino Uno a good choice is the ATSAMD21. This is an ARM Cortex M0+ processor with up to...

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Posted in Arduino, how-to | No Comments »

Scott’s Z80SBC: Z80 single board computer

Thursday, August 2nd, 2018

Dr. Scott M. Baker published a new build: When I was first getting started with electronics, wanted a Heathkit ET-3400 Microproccessor trainer, but could never afford one at the time. Eventually both I and the world moved on, to fancier more capable computers. However, I’ve still always wished I had...

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Posted in PCBs | 1 Comment »

Repairing a 1960s mainframe: Fixing the IBM 1401’s core memory and power supply

Thursday, December 28th, 2017

Ken Shirriff wrote a great article describing the repair process of  the vintage IBM 1401 mainframe computer: The problem started when the machine was powered up at the same time someone shut down the main power, apparently causing some sort of destructive power transient. The computer's core memory completely stopped...

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Posted in repair, vintage | No Comments »

Zeta 2 single board computer

Tuesday, December 13th, 2016

Scott Baker has a nice write-up on building a Zeta v2 single board computer designed by Sergey Kiselev: A few of the features of the Zeta 2: 512K Flash Memory, allows CP/M to be booted from Flash, and mounts Flash as a CP/M disk including many tools (assembler, editor, …)...

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Posted in builds | 2 Comments »

Mini version of the OSI-300 trainer

Tuesday, December 15th, 2015

Here's Christopher's mini version of the OSI-300, he wrote a post on his blog detailing its assembly: The OSI Model 300 Computer Trainer was advertised by Ohio Scientific Instruments in 1976 as a computer designed to introduce individuals to computers and teach them the basics of programming the MOS 6502...

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Posted in project logs | 1 Comment »

Single chip AVR BASIC computer

Friday, July 11th, 2014

Dan over at HackAday documented his single chip computer project with the PCBs from DirtyPCBs: A single AVR microcontroller (the ATmega 1284P) has been used to create a standalone computer system which runs the BASIC programming language. The 1284P runs TinyBASIC Plus, generates RCA video signals (using TVout) and reads PS/2...

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Posted in AVR, Chips | No Comments »

A computer kit from the ’70s: Ithaca Audio Z80 CPU card for the S100 bus

Thursday, May 29th, 2014

Fabio Battaglia  blogged about his Ithaca Audio Z80 CPU card for the S100 bus project: First of all, I assembled some simple test code to write a letter on my video console, just to check that code was actually executing. Obviously I only got a black screen at first, which seems...

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Posted in DIY, hacks | No Comments »

Car computer build

Tuesday, January 21st, 2014

ptodorov over at the EEVblog forum shared his experience building a carputer: For the last 5-6 months everything ran fairly smoothly with a few glitches and bugs. But a few weeks ago all hell broke loose while I was driving. Suddenly left and right blinkers started flashing, the headlights started blinking and...

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Posted in hacks | No Comments »

ReCoMonB – Real Computer Monitoring Block

Thursday, July 18th, 2013

Ivan Creations made this ReCoMonB (Real Computer Monitoring Block) and wrote a detailed explanation on his blog describing the build: I managed to de-virtualize the CPU/MEM/HDD/NET stats and now I have them physically represented on my desk. The device that does that is named ReCoMonB - Real Computer Monitoring Block....

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Posted in builds | 4 Comments »

Recent Comments

  • readybrek: Anyone got a any recommendations for a budget-priced hot air station?
  • William: lol I'm happy to waste 3c for each program/debug cycle... but probably not the time spent soldering a new device down to a proto board!...
  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...