I've played with BT adapters and didn't really have any problems except for the handshaking issues discussed in another thread.
As you note, there are basically two versions (aside from master/slave etc. issues): True RS232 that have a DE9 connector and plug riight into the M100 with a 25<>9 pin adapter, and modules like the HC-05/06 that are 5V TTL serial and either need a level shifter or directly connect to the 5V TTL signals inside the M100 (there is at least one article on the Web somewhere detailing that). It's been long on my to-do list to replace the internal modem with internal Bluetooth and USB modules, using the modem switches to select one or the other and turn them on and off. Maybe you've inspired me ;-) I had timeout problems with the original TS-DOS in ROM but I gather that that's been fixed in later versions. Have FUN! m On Tue, Nov 1, 2022 at 1:42 PM jonathan.y...@telia.com < jonathan.y...@telia.com> wrote: > Hello, > > I can connect my M100 to a Raspberry Pi, either through a USB-->RS232 > adapter, or even on the GPIO bus with a suitable level shifter. I've > always done with the 'larger' ones but I've been playing a Zero W, which > doesn't have the GPIO soldered on and only 2 micro USB connectors, one of > which is for power. I've thought of trying to connect the M100 via > bluetooth, but I thought I would ask if anyone has done this. I can get a > console via bluetooth from other bt devices (like my android tablet) and > the zero 2 has bluetooth on-board, so this kind of connection wouldn't need > anything hanging off the Pi zero. > > I've seen RS-232 to bluetooth adapters, though the 'cheaper' ones don't > really conform to the +12 -12 of real RS232. I've toyed with trying an > hc-05 and a level shifter but maybe it's better to get somethiing that does > it all, if this is even reasonable. > > Jonathan > >
