Warning - ff-topic - talking about the POS7300 / FT-100108. Probably wants its own thread.
I got mine too. Impressed by delivery time and packaging. It only pulls about 6W so could just about be sourced without PD, I've got as far as duplicating the vendor's video and trying demo mode but there seem to be other less obvious options including nonvolatile programming. What else have you figured out ? Any thoughts about CN1 ? JP1 ? On Tue, Jan 13, 2026 at 12:47 PM David Pye <[email protected]> wrote: > Just got one of those exact displays, and having a play with it. > > A few things I can provide info-wise: > > 12V DC input to power it up and then it expects commands/data over RS232 > to tell it what to display. There is an RJ45 to 9-pin D connector adaptor > provided, but you need to feed 12V into that (or elsewhere on the PCB) so > you can't just plug it into a USB serial dongle. > > I'm sketching up a PCB (mostly for my own amusement) to drive it as > follows: > > USB-C PD module (£1 off amazon or aliexpress) to negotiate 12V from a > suitable PD-compliant USB-C PSU > RS232 transceiver IC to speak to the display > DC-DC buck converter to source a 5V supply for the Pi Pico from the 12V PD > input > Raspberry Pi Pico W, which will allow you to connect to it as a USB serial > device (via usb mini) and send commands > The wireless functionality will also allow you to send data at it via > either MQTT or Netcat (or something else I think of...!) > > Might also have some pin headers spare to allow connection of > PIR/microwave presence sensor, or GPS module. > > I think that should allow it to be a fairly broadly multi-functional > display or clock. When I get round to it, I'll publish all of the above > on github, so if anyone wants to make any themselves, they can. > > Alternatively, any other ideas anyone has for features, I'd always welcome > a good idea :-) > > (Alternatively, for the billy-basic rough and ready solution, you could: > Supply display with 12V, speak upstream of the RS232 transceiver IC on the > PCB via 3v3 UART, and it'd work...!) > > David > > > On Tue, 13 Jan 2026 at 12:35, Tony Adams <[email protected]> wrote: > >> For anyone in the UK these appear similar, though serial rather than USB >> so maybe a generation earlier. >> >> https://www.ebay.co.uk/itm/127038159566 >> >> No connection to the seller etc., just thought they might be of interest >> to someone. >> >> On Tue, Jan 13, 2026 at 11:52 AM Tom Katt <[email protected]> wrote: >> >>> Forgot to mention - these are brand new old stock with Digikey packaging >>> and require soldering pin headers on to the board, so they are not "plug & >>> play" like the POS displays... >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "neonixie-l" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion, visit >>> https://groups.google.com/d/msgid/neonixie-l/97519123-4199-4dd5-9c21-6fdfdfff427en%40googlegroups.com >>> <https://groups.google.com/d/msgid/neonixie-l/97519123-4199-4dd5-9c21-6fdfdfff427en%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "neonixie-l" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion, visit >> https://groups.google.com/d/msgid/neonixie-l/CAF6QoKzZ5P%3DmPK65dBmVjW4i4uB2UNBCkb-e3bkVu1V9mC4aKg%40mail.gmail.com >> <https://groups.google.com/d/msgid/neonixie-l/CAF6QoKzZ5P%3DmPK65dBmVjW4i4uB2UNBCkb-e3bkVu1V9mC4aKg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "neonixie-l" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion, visit > https://groups.google.com/d/msgid/neonixie-l/CAOQ6x0FaunK%2BAzqakd%3D7VY9i%3Dfa6yeEZnsRWrw1SOjWR%2BCxcBg%40mail.gmail.com > <https://groups.google.com/d/msgid/neonixie-l/CAOQ6x0FaunK%2BAzqakd%3D7VY9i%3Dfa6yeEZnsRWrw1SOjWR%2BCxcBg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/CALiMYrvU4iqXYizJzx%2B4VFcEuLy%2BsRFSdmPUPcFrCOjoSxaF6Q%40mail.gmail.com.
