Apollo - Development Discussion
Revision as of 14:47, 14 June 2009 by VK2NRA (date and time - separate with <hr>)
The original PDF version of the schematic is here: PDF rev 0 Schematic.
- I beleive the interface is SPI rather than I2C for the TPIC595 latches.
- 74HC14 can be used in lieu of 74HC04. The '14 has Schmitt trigger inputs, might help with noise immunity on the control line(s).
- Suggest considering PIN diode antenna switching instead of a relay (RL15). For those who operate CW QSK, quiet is nice. It's even nice for those who don't :-). KK7P 21:22, 14 June 2009 (UTC)