A *far* better solution is to add an ethernet port to your Amiga which is relatively easy to do on all models except the A500 and A1000.
For those two models, you can add a Z2 busboard sidecar, and then add a Z2 ethernet card. This is an expensive way to do it, but it works.
As you say, It's expensive...
If you are a DIY man, It's very easy to interface an ISA ethernet card to those amiga models.
The same on PCMCIA. PCMCIA is only an extension to ISA bus. I've connected PCMCIA cards to AVR microcontroles with success.
The problem is always the same... drivers...
I wrote my self lots of network drivers for linux and some microcontrollers, but these have well known (and well documented) apis, or no api at all (like microcontrolers). The amiga's problem is to write a sana2 compliant device driver... As far as I know, ofcourse.
Once you have ethernet, then you can add an ethernet -> wifi adapter. [..]
If you get a fonera, you can hack It to work as ethernet to wifi bridge. And if you build the serial adapter, you can even make your own slip to ethernet or wifi bridge. I made It my self, and It works nice.
The only problem is that linux kernel doesn't manage bridges with diferent MTU sizes. So, yo have to configure the slip interface to a MTU of 1500 bytes to match the ethernet MTU... And It could be a high load for the amiga.
That's not a problem for ethernet to wifi briges. Wifi uses ethernet frames under the link layer, so It uses same MTU size.
You can get a NEW fonera+ for about 30 euros (about $45 or 27 pounds):
https://shop.fon.com/FonShop/shop/ES/ShopController?view=product&product=PRD-018&language=enNote: My design takes care of it. It automatically fragments incomming packets that exceed the slip MTU size... At least is what I have planned...
RS232 is VERY cpu intensive on the internal chipset, not to mention dirt slow -- maxing out at 0.1Mbps.
Yes, you're right, but It's the cheaper and easier option, I think...
ferix: The serial-to-ethernet project looks interesting. I wonder what you have planned do show in the display.. Are you planning to sell these things when you get it finished, and do you have any hint about the price tag? (or what are the axrox. parts cost if you plan to release it as a DIY project.)
I'm not planning to sell It. Maybe, I'll free the schematics and sources, as soon as I'll have a full working prototype.
I don't know how much I spent on It, because It's almost made with spare and sample parts, but I guess It would cost about 20 euros or so, without the LCD.
The LCD is not necessary at all. I included It for configuration and status information, but you can do the same directly by the serial port.