Good that you mentioned ShiftOut. On that note… I use an ESP-8266 for most of my projects (specifically the WeMos Mini D1). Limited in PINs, but I want to control many steppers, so I use the mentioned ShiftOut.
Basically, using 595s (4 of them), I control 8 stepper motors. A 595 having 8 outputs and the steppers need 4, I get to control 2 per chip. In the reverse, I have 8 switches (end points/stops) for the 8 steppers. All happily controlled by a single WeMos. Of course with 8 steppers * 4 wires each…. It’s a jumbled mess in prototyping. Michail From: neonixie-l@googlegroups.com <neonixie-l@googlegroups.com> On Behalf Of Richard Scales Sent: Saturday, August 13, 2022 9:42 PM To: neonixie-l <neonixie-l@googlegroups.com> Subject: Re: [neonixie-l] Re: Nixie Clock - Direct Drive HV5530 I've used HV5522 and HV5622 a lot without any issue - I always use a CD40109B level shifter to convert from 3v3V or 5V to 12V (I know many do not). In Arduino Land there is a function called ShiftOut which does all the required clocking - it's for 8 bits as standard but can easily be re-worked for however many bits you want. I have one clock with 4 x HV5522 in series for which I made a 128 bit ShiftOut function. See here for details of the shiftout process: Arduino shiftOut(): Control chips with a 3 wire Serial Interface. (best-microcontroller-projects.com)<https://www.best-microcontroller-projects.com/arduino-shiftout.html#:~:text=Arduino%20shiftOut%20is%20a%20purely%20software%20implementation%20of,data%20input%20%28the%20equivalent%20software%20function%20is%20shiftIn%29.> It's an interesting page with scope traces to help explain. Ultimately I moved over to using SPI transfers which are driven purely by the processor but the theory is all very similar. - Richard -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/MW2PR0102MB3435912B01A4DA1E1AB208A082699%40MW2PR0102MB3435.prod.exchangelabs.com.
