---NE555 Sawtooth Generator---

This PCB is designed to create sawtooth waveform with a NE555 Timer Chip.

Frequency can be adjusted by changing the values of C3 and R4.

Output can be taken out from this board with three ways:

1. Pure signal out of NE555

2. DC blocked signal out of NE555

3. Low pass operational amplifier filter with voltage divided output (max 3.3V level signal to MCU)

You can choose the wanted output by adding a zero ohm resistor to R9 or R10 or R11.

REVISION: 1.0