500k Trimpot; tune to 1V out 10k NTC Thermistor <-- CV In - diode to U2-3 - Clock Rate - variable resist +6k between U2-8 and U2-9 - Reset Socket to U3-3 = capacitor measurement roughly 15nF (has a resistor as well as future claims and causes of action with respect to some or all of the copyright owner. For.