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MAX3222 | 
Diagram | 
3V A232DBH | 
JP5 Wide | 
JP5 Close |
The first few pictures are using the MAX3222CDWR (part# 296-13083-1-ND) chip from Digi-Key, and how it was wired up. I don't have very steady hands, so I bent every other pin up, so I wouldn't solder any two together. Also used, were five 0.1uf Ceramic capacitors, and some very thin wire. The tape is only there so I could remember what wire went where 
The last few pictures are using the 3V version of part A232DBH from »www.compsys1.com/workbench/On_to···l#a232db Normally, this comes in a 5V version, so you need to specify the 3V when ordering. You will need to assemble the hood, and solder on 4 wires, but it's a lot easier than making the whole thing from scratch. Much cleaner as well.
Both methods work great.
The 3V A232DBH is a nice choice because it can be put together very easily, is enclosed, and is a much cleaner. Though the cost is around $20.
If your adventurous, and want to build your own circuit, that's fine too. If you have the tools, you can build it pretty cheaply. It just takes a bit of patience, but the satisfaction of putting it together yourself, and seeing it work, is a great feeling. |
