Vs: .HEX fail
Need erinevused siis skeemist, mis on SARNANE, mitte sama.
I don't have a schematic of the counter yet, but it is very similar to the schematic on the right. (link to original schematic) Significant differences between this schematic and the schematic for my bat counter are:
- Forget about the transistors and the resistor connected to the transistors. They are not needed if you draw only a little current from the PIC. Connect RA0-RA3 directly to the respective common cathode connections of the LEDs.
- The resistor from RB1-RB7 to the 7-segment LED displays can be as large as 4.7 kohm, because the current through the LEDs can be very low.
- I'm using a clock crystal with built-in capacitors, which further reduces the number of components.
- The resistor that connects the input to RA4 is 10 kohm instead of 470 ohm.
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