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kicad 7 |
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FreeCad |
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Ultimaker CURA |
Wifi-connected Nixie Clock
This is a driver board for 6 Nixie Tubes in two break-apart sections. The Tubes are driven by K155ID1 (7441/74141 compatible) BCD drivers on the first section. The inputs into first sections are 5V-level BCD signals for each tube. A separate +170VDC power supply will be needed to power this board.
The second section includes a 24-bit shift registers (comprised of three 74HC595 8-bit shift registers) that can be driven by Arduino (or other) using only 3 digital signals (serial clock, serial latch, serial data). Use this serial interface to shift 6 BCD nibbles (one for each digit) into the shift register. The two sections are designed such that they plug into each other. Power the second section requires +5VDC power.
Use the following function to send data to the board:
void outputData() {
// take the latchPin low so
// the outputs don't change while you're sending in bits:
digitalWrite(latchPin, LOW);
// shift out the bits:
for (int i = 0; i <= 2 ; i++) {
shiftOut(dataPin, clockPin, MSBFIRST, 16*digit[2*i] + digit[2*i+1]);
}
//take the latch pin high so the outputs will update:
digitalWrite(latchPin, HIGH);
}
Initialize the digits array like this:
byte digit[6]; // The 6 digits to be displayed by outputData();
In your main() routine, set the elements of the digits array to the values (0-9) you want to display with each tube. Then call outputData() to update the display.
Wifi-connected Nixie Clock
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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- RODNEY THAYER Oct 07,2024
- Roger Meier Oct 07,2024
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