Pi HAT with randon noise and number generators
Prototype PCB designs I'm playing around with
Potential entropy sources (with a combination of other parts):
- one of the many amps or comparators I have
- PC817 optocoupler
- CD4047 CMOS monostable/astable multivibrator
- NE555 timer
- PT2399 digital delay echo audio processor
- Linear Feedback Shift Register
The avalanche noise generator circuit consists of:
- 2x 4.7k resistors
- 1x 10k resistor
- 1x 1m resistor
- 3x 3904 NPN transistors
- 10uf capacitor
- 0.1uf capacitor