9617 square-wave generator w/ 555

[last updated: 2017-09-24]
GMC GUI project on rPi
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555 9617 module

555 9617 module

Notes:

• Vendor: ICStation, PN: 9617
• Vcc power spec'd at 5-15v, but ran OK on 3.3
• Vi control open or Vcc to free run, ground to stop
• Vo output active low (sinking)
• freq adj from 0.5 - 70Hz (CW is faster)

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