I have had success with the ArcaneBytes modem. On Sat, Dec 17, 2022, 9:39 AM jonathan.y...@telia.com < jonathan.y...@telia.com> wrote:
> Hello, > > I'm not sure that thing will hook up to a real RS-232. I looked at the > schematic and it talked about 3.3 v, which would not drive the RS-232 > lines. Not sure how you would connect it. But maybe there is a level > shifter in it. I've found that a lot of things talk about RS 232 but it is > things like 0 to 3.3 or 0 to 5 volts, and not even close to real RS 232. I > know the M100 doesn't actually get there either, but I know 0 to 5 volts > doesn't make it on my M100. > > I had been looking at this device, in part for a Psion 5 MX but it also > for my M100 as well. A 'hat' stuck on top of a Raspberry Pi zero W, plus a > power supply. Admittedly most of the work would be done by the Pi (the > tcp/ip stack etc.) but you could use a terminal program to access a little > linux box. It was self-contained, even with a battery!! I still have to > figure out where to buy that level-shifter (the SP3232EEP) but most hats > I've looked at for the pi zero w don't have hardware handshaking. > > https://www.kianryan.co.uk/2022-11-28-psion-sidecar-ppp-modem-and-terminal/ > > Admittedly, this is probably to big to fit in an M100 but I am pretty sure > it would work. Increase the size of the battery and power the M100 with > it!! > > Jonathan > > ----Original Message---- > From : hira...@hotmail.com > Date : 2022-12-17 - 15:16 (CEST) > To : m100@lists.bitchin100.com > Subject : [M100] Pinenut Wifi / BLE > > I came across this tiny little board on the Pine64 site, and I wonder... > > PineNut Wifi/BLE board > <https://pine64.com/product/pinenut-model01s-wifi-ble5-module/?v=0446c16e2e66> > > this thing is about 1" by 2/3" (25 x 14mm), and as I understand it > provides wifi and bluetooth, via serial (TTL or UART, I think). > > > I think it could be mounted internally to the M100 (dunno about M102). > Maybe a 200, too. > > IF one could connect it to the modem serial connection, one could then > theoretically use it to connect via wifi/bluetooth, and switch to the > external rs232 port, keeping its functionality, with a minimum of > "destruction" to the M100. > > > Or maybe, connect it to the barcode scanner, which, if possible for > regular comms with the module, would leave you able to use the rs232 and > the wifi at the same time. > > > I'm interested in any opinions on this, because imo it could massively > improve the functionality of the M100 (yes, I know the same essential thing > is possible with some of the wifi-capable arduino boards, but all I've seen > of them are much larger than this). > > > > >
