Once again I got a great result with the batch I submitted to DirtyPCB. This time I chose a larger PCB (100×100mm) to test my idea of a universal module. I could fit 8 10TFF modules in one half of the PCB surface.

Now I have to solder a few and test them :-)

It appears that the distance between the pads of the axial capacitor is too short. I modify the component in Eagle to widen the gap and reduce the force on the pins.

The other weird thing is that both types of transistors have a reversed pinout. The BS170s are non-conform and this time, I try the 2N7000 with its reversed pinout. It becomes too complex to plug all the parts in reverse so for this test, I soldered the parts on the other side of the PCB. The outlines still match the parts but on the other side...

Another little change is the resistors values : this time I try with 120K, which should reduce power consumption AND operating frequency, for the slower parts of the clock.

Here is a pretty "usual" module :

This one is a bit special because the 1N60 diode is connected to the other resistor and resets the latch to the opposite value:

Only one is required in the whole system but it's good to test it. Indeed, I should start to implement and test the mod3, mod5 and mod6 counters...