Hey everybody new to the forums, I am trying to build the MK112 Brain Game Kit on a bread board and noticed that the schematic included does not match the pre-fabricated circuit board…I.e on the schematic it says the IC Chip Pin1 4 and pin 8 are supposed to be ground but according to the pre-fab board pin 4 of the IC chip is connected to C1. Can anyone confirm this?
Hello @fuqueoff
Normally Pin 1(VDD) of chip IC1 is connected to C1 and Cathode of D1 and resistors R1-R5 => positive of battery. => Red marked
Pins 8 and 4 are both connected to ground => ground plane on PCB board. => Yellow marked.
Best Regards,
Velleman Support