[Physical product verified]Futaba GP1250AI VFD driver version

Driver chip:

       The model is futaba's gp1250ai

       The corresponding module is NAGP1250AA1

       The bare screen is three large 595, two anodes 128bit, and the gate 64bit

Voltage:

       Logic 5v

       Medium voltage 44v

       High voltage 60v

       (Measured on the Laowu baseboard)

      [+] 2021/4/25 21:13 Supplementary resistance (measured value) not marked on the board: 

                Medium voltage: R7= 19.53K, R5 = 430.2K, R6 = 13.3K

                High voltage: R8 = 12.4K, R10 = 633.7K, R9 = 13.24K

Boost:

       I made reference to the bottom plate of Lao Wu.

       (I wonder if the dcdc can be replaced with a cheaper one, the current one costs 7 yuan a piece)

Driving logic:

        SIN: serial data input

       CLK: clock, low level write

       LAT: output latch

       BLK: output enable

       Gxxx:Gate

       _xxx: Another set of anodes

driver:

       Still writing......

[+] 2021/4/24 21:05 The driver is written (although it is a bit inhumane)

       Attachment:/stc: Scan the code of the microcontroller

               /FTBDATA: esp32 aduino test code, graphics based on Adafruit_GFX

       Usage: esp32 can configure Serial1 (9600,8N1)

                Other microcontrollers can rewrite the VFDsend function

[+] 2021/5/13 13:43 The V2 driver is written (ftbtestV21)

project:

       sch is the schematic diagram of 2.0

       2.0 PCB is being prototyped and tested

       The remaining one is the package pictured on the cover that has been adjusted, but the circuit has not been changed (when I came back from the board, I found that the package was wrong...)

       [+] 2021/4/24 21:05 The driver is for the pcb "PCB_[Experimental][Unverified]vfdFTB"

Known issues:

      Driver code: The leftmost 2 pixels and the rightmost 2 pixels cannot be displayed