Hello, I made my first nixie, it is quite like "my first nixie, by Playskool" It's even not a nixie, this is a VFD IV-18. The Hardware is quite simple, a Wemos D1 mini and a small SOP-4 adapter for the MAX6921awi. the 30V is from a DC-DC converter. No PCB, simplier, you die. (got it here: https://www.thingiverse.com/thing:3417955)
it works from scratch, just the brightness at 0, but the big dot on the left was on before being connected to the wifi. unfortunately, the firmware is quite awfull. : http://192.168.4.1/?B=80 to set the brightness to 80% I thought I could make something better. but no... One day, I see this project: https://forum.arduino.cc/t/iv-18-vacuum-fluorescent-display-ntp-clock/655222 this firmware is much better !!! (https://forum.arduino.cc/uploads/short-url/hsgq9LJgaIPSupPYY7fFbfiCs7d.zip) I modified the GPIO as follow: Data D4 -> D5 Clock D0 -> D7 Strobe D7 -> D6 Blanking D8 -> D8 (but I had to ground it to light the digits.) I could compile it, it works, except that the segments are completely scrambled. good point, the hardware is compatible, I will just have to remap the segments and the grids. so easy to say, but I didn't succeed in anything.... I made the pin connectivity of the two boards, to see the differences. Here they are: IV-18 MAX6921 HV5812 pin board program Segm.-A out00 hv13 Segm.-B out02 hv15 Segm.-C out05 hv18 Segm.-D out06 hv19 Segm.-E out04 hv17 Segm.-F out01 hv14 Segm.-G out03 hv16 Seg.-pt out07 hv20 Grid-1 out18 hv08 Grid-2 out11 hv01 Grid-3 out17 hv07 Grid-4 out12 hv02 Grid-5 out16 hv06 Grid-6 out13 hv03 Grid-7 out14 hv04 Grid-8 out15 hv05 Grid-9 out19 hv09 Is it in display.cpp or in the clock_esp_IV_18_v0_02P.ino ? Help !!! Regards, Benoit. -- 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 on the web, visit https://groups.google.com/d/msgid/neonixie-l/778b7be7-4118-4680-ad76-87ae02e3a6e3n%40googlegroups.com.
