Introduction
EPROM cards are becoming useless as they do not offer much storage.
Benny Boogaert has modified a several 32K EPROM card cards to a 512K Flash cardcards.
Components used
Component | Manufacturer Part No | Order Code | Price | Min Qty |
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A29040C-55F | Farnell | 2.76 | 1 | |
0,2 or 0,25mm Kynar wire | ||||
Bison polyurethane professional | ||||
Pattex Ethylcyanoacrylaat |
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Instructions | ||||||||||||||||||||||||||||||||||
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Pull off the lid | ||||||||||||||||||||||||||||||||||
round off the 4 plastic pins | ||||||||||||||||||||||||||||||||||
cut some space around the pins | ||||||||||||||||||||||||||||||||||
This is a very strong connection, which does not damage the copper track on the motherboard. | ||||||||||||||||||||||||||||||||||
Connect the wires to the chip
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Flatten the 32 pins and clean up copper. They go through the pcb too far preventing the cover to sit tight in it's place. | ||||||||||||||||||||||||||||||||||
2 pieces of sellotape were used to keep the top and bottom of the case tight to start with | ||||||||||||||||||||||||||||||||||
one layer up front and one in back, Tape should be tight and flat | ||||||||||||||||||||||||||||||||||
Unfortunately, the tape loosened, causing bad contacts. Solution - the following steps were taken Glue the assembly with a small drop of polyurethane on
The card worked super after that. | ||||||||||||||||||||||||||||||||||
For the 4 black pins Bison polyurethane professional was used. | ||||||||||||||||||||||||||||||||||
For the side flaps, a quick glue, official name is ethylcyaanoacrylaat is recommended. Patex was used but there are a dozen other brands. This glue sticks within a few seconds and has to be applied at the last instance before pressing the plastic box together. | ||||||||||||||||||||||||||||||||||
Here is the flash card being used for files. |
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