January 26, 2012 AT 8:39 am
Veronica – ROM Board
Veronica – ROM Board @ Blondihacks.
It seemed so simple. The best ideas always do. However, sometimes the smallest problems end up taking the most time to solve. There was some swearing, I won’t lie.
You see, I had a really swell circuit that could take a ROM image and dump it into an SRAM. Since parallel EEPROMs exist that are accessed just like SRAMs, I figured I could just buy one, drop it in, and presto- ROM for Veronica. Flawless plan, right?
Well, a hundred hours or so later, it turns out the plan was in fact pretty darn solid, but the parts were against me. To recap, I designed a board for Veronica that would hold an EEPROM chip, and had a built-in ATTiny that acted as an interface between the EEPROM and my USBTinyISP programmer. Since EEPROM programmers are very expensive, this was a way to leverage the tools I had to program the ROM that Veronica needs to boot up.
Read more, Veronica continues…
Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Transforming Today’s Bad Jobs into Tomorrow’s Good Jobs
Wearables — Not a loophole
Electronics — Rule of thumb: 10mils per amp.
Biohacking — Soft Artificial Human Heart #3DThursday #3DPrinting
No Comments
No comments yet.
Sorry, the comment form is closed at this time.