Hi Don_Z, The HT16K33 is not fitting your Display. You would need 8 Outputs with high current sourcing capability and 16 outputs with lower sin...

The HT16K33 is a versatile LED driver for Common Cathode Leds.Pleas give more detail for the LED display´s which are to be used.You can find circuit e...

If your power supply is not regulated and you have no load than it can happen that the output voltage is much higher than the nominal. But try to hav...

@centari Does LT Spice allow breadboard circuits and Arduino circuits? LT Spice is a simulation program for analoge circuits. You have to input yo...

This time Iwent through all the old messages, but I looked for the display descripton too and here is a link to: You have to choose SPI or IIC ...

@leonardo1123 I have used SPI several times but I did not go through all the Messages allready written: At SPI you need a seperate CS for every ...

1. The old bootloader on Nano should not make a difference; I used both bootloader and if the downloading closes with success you can be shure it wor...

@sumanta Hi, just looked for 7 Segment Display from HP and found a table for different versions: May be it helps. I would use 5 v a Diode a...

and here is the result of the simulation: The circuit should make a sharp pulse aot of the mains sinus voltage for a clock or a dimmer circuit.

LT Spice is a very common and good tool, originally from Linear Technology which is now a part of Analoge Devices. You get details about many componen...