as a suggestion if you included a breakout for pin 2, you could also use this for Tx out on BCR, in line with the "BCR hack" I posted at the wiki.
as an FYI, I have a MAX232 based adapter board that converts TTL to RS-232, for use with the BCR port. I could share that if there is interest. I used this board to send 57600baud serial data in/out of the BCR port. On Wed, Jul 22, 2020 at 6:10 AM Brian K. White <b.kenyo...@gmail.com> wrote: > On 7/13/20 5:41 PM, Kurt McCullum wrote: > > Looks great. Might be worth adding one more hole that goes to the BCR > > data in pin for those interested in using it for input. > > I ended up making a separate breakout board for hacking/experimenting > > Breakout: https://oshpark.com/shared_projects/MTOWfRkz > > And I've been massaging the usb and wimodem adapters, and the way > oshpark works, you have to keep creating new links for each revision, so > the current versions of those are: > > USB: https://oshpark.com/shared_projects/mTFeysVg > > Vertical USB: https://oshpark.com/shared_projects/OHdw5nqN > > WiModem232: https://oshpark.com/shared_projects/AXNfGK0n > > I just received an earlier version of the WiModem and usb adapters today > and tested them and they both work. > > The BCR port successfully powers the WiModem, but unfortunately the low > battery light flickers rapidly after a few minutes with fresh nimh > batterlies, after about an hour with fresh alkalines. Machine still runs > for at least a couple hours after that. I don't know how long before it > actually dies, just that the battery light flickers rapidly and > constantly, and I've had it on for 2 or 3 hours so far. > > I'm measuring about 4.85v out while loaded with the WiModem, and drawing > about 80ma. 75ma when I issue the AT command to turn the led off. > > I think it was silly to get the OLED version of this thing. You can get > all the information you need to operate the modem right in the terminal. > I think those modules draw about 10-15ma. So between losing the OLED > module and turning off the led, that could bring it down to as low as 60ma. > > https://photos.app.goo.gl/hjoC3vnfZxWbFPRW6 > > -- > bkw >
