ORIGINAL: gr8flyer55
Rob.. The diode placement on the hv-4 board doesn't match the layout..downloaded the Layo1 program, ran it, loaded your board and there are mismatches..extra traces, extra resistor,
This is the list from the cdipwr4 board, wat components doesn't belong to your schematic ?
Rhall = NOTE 1
The timerboard with the NE555 can given een problem.
You need a astable timer with a dutycycle with less 1%.
http://www.kpsec.freeuk.com/555timer.htm#astable
If the freq of the NE555 is to low and the dutycyle is 50/50%, you blowup the scr or you can't fire the scr.
The schematic with the diode in it can do the job.
You can also use a second CDI/TCI timerboard to test the CDI or TCI.
Instead of a hall sensor you connect the second timerboard output on the hallsensor input.
LINE 6 - if (PORTB & 0x04) delay_ms(200); // 300 rpm
Into the code you can change the timing of the testpulses, 200 = 300rpm, 100 = 600rpm, 50 = 1200rpm, 25 = 2400 rpm, 5 = 12,000rpm