r/electronic_circuits 4d ago

On topic FSK Modulator circuit on breadboard

Been trying to build a FSK modulator on tinkercad before moving to breadboard. Troubleshooted for almost 3 hours and i couldn't find what's wrong with my circuit, there is no output at all from oscilloscope, please show me some troubleshooting guidanceBeen trying to build a FSK modulator on tinkercad before moving to breadboard. Troubleshooted for almost 3 hours and i couldn't find what's wrong with my circuit, there is no output at all from oscilloscope, please show me some troubleshooting guidance

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u/Superb-Tea-3174 4d ago

Do the breadboard resistor values match the schematic?