My lab journal chronicles the work and experimentation I do in my electronics lab. Older lab journal posts, created before the new posting format (pre August 11th 2014), can be found in the old Lab Journal.Otherwise all newer posts will now be in the post feed below.
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Recent Lab Journal EntriesClick on the Journal Entry's title for the full text.
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SMS Flash Carts - Function SRAM Save Feature
After several months of not actually working on this project I decided enough is enough and was quite curious to see if my SRAM save feature would be operational on ...
Posted Jul 23, 2015, 10:31 AM by René Richard
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dbGrafx Booster - Red, Green, Blue, Chroma, Luma - Oh My!
In October last year I had prematurely announced that the dbGrafx Booster was a done deal. Sadly further testing after the announcement revealed several major bugs which rendered that board ...
Posted Jul 10, 2015, 5:48 AM by René Richard
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Mark III FM Power Base Converter - Complete!
I've received and successfully built the first Mark III FM Power Base Converter! This new Power Base Converter variant allows Mark III games to be played on either Genesis ...
Posted May 25, 2015, 5:02 PM by René Richard
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SMS Homebrew CPLD Firmware Looking Promising!
The db SMS Kit has been slightly harder to get started and operational when compared to TG16 De-Bee Card or the Genesis MD-Cart owing to the mapper found ...
Posted Apr 9, 2015, 8:46 AM by René Richard
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MD Flash - Hardware to Release Physical Megadrive / Genesis Games
I'd been toying for a while with the idea of making a Megadrive / Genesis Flash Cart to enable new homebrew games to be released on real hardware (similar to ...
Posted Mar 2, 2015, 6:22 AM by René Richard
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UMDK
So I decided to build UMDK; a Genesis / Megadrive hardware development cartridge. The project was released as open-source under the; the code and VHDL is all LGPLv3, and the ...
Posted Feb 7, 2015, 12:56 PM by René Richard
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dbGrafx Booster is CSync'ing!
Early on I discovered that my first revision of the dbGrafx Booster had a flaw in the Sync circuit (or lack thereof). I may be guilty of sometimes designing first ...
Posted Jan 29, 2015, 5:23 AM by René Richard
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dbCard Functional Prototype With 3D Printed Plastic Holder
A few months ago I announced dbCards which are release HuCards for homebrew software (dbCard (TurboGrafx-16 Homebrew Flash Cart) Prototype Fully Working). While this was great, the form-factor ...
Posted Dec 17, 2014, 7:25 PM by René Richard
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Mark III FM Power Base Converter Prototype
I wanted to be able to use my FM Power Base Converter design with Mark III games (the Japanese Sega Master System, more or less). The trouble is, the Mark ...
Posted Dec 4, 2014, 12:23 PM by René Richard
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Genesis Game Cart Current Consumption Measurements
In attempting to figure out what the maximum "safe" amount of current to draw from the cartridge port is, I thought a good experiment would be to measure the current ...
Posted Nov 19, 2014, 6:02 AM by René Richard
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Preliminary Comparison of CVBS vs. RGB on db Grafx Booster TTP
I thought I'd share screenshots of CVBS and RGB video from the db Grafx Booster on my Sony KV-24FS100. I'm no photography expert by any means so ...
Posted Nov 14, 2014, 12:11 PM by René Richard
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Sega Genesis Probing Adapter - New Dev Hardware
As I develop more and more Sega Genesis hardware, I'm finding it difficult to easily troubleshoot my boards. I have a Model 2 Sega Genesis which is permanently disassembled ...
Posted Nov 13, 2014, 7:52 AM by René Richard
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