Hi Guys
This has to do with my core rope project. I’m pulling my hair out here :O
I send a pulse through the pulse line, and try to read the transformer outputs
from the secondaries into an eight bit mcu port. Only the first four bits are shown here.
It is only bit 0 that is behaving itself, and bit 0 is working reliably.
The input to the transistors from the former secondaries all look the same to me on a scope.
This circuit should invert the signal, and usually be high, except when there’s a pulse.
Bit zero does this, but all others are always zero volts (the highlighted connections) unless I pull the mcu out of the circuit.
I would think that the ten turn windings on the toroids would normally be keeping the transistor bases low.
The 5 Volt supply to all transistors is ok.
Right now, this will read 0001, when it should be 0101 due to the pulse wire weave pattern shown here,
but as I cycle through all address lines (only one shown here), the value of bit 0 is always correct.
Any ideas of what I should try? Thanks
This has to do with my core rope project. I’m pulling my hair out here :O
I send a pulse through the pulse line, and try to read the transformer outputs
from the secondaries into an eight bit mcu port. Only the first four bits are shown here.
It is only bit 0 that is behaving itself, and bit 0 is working reliably.
The input to the transistors from the former secondaries all look the same to me on a scope.
This circuit should invert the signal, and usually be high, except when there’s a pulse.
Bit zero does this, but all others are always zero volts (the highlighted connections) unless I pull the mcu out of the circuit.
I would think that the ten turn windings on the toroids would normally be keeping the transistor bases low.
The 5 Volt supply to all transistors is ok.
Right now, this will read 0001, when it should be 0101 due to the pulse wire weave pattern shown here,
but as I cycle through all address lines (only one shown here), the value of bit 0 is always correct.
Any ideas of what I should try? Thanks