15 Commity (master)

Autor	SHA1	Wiadomość	Data
Marshal Horn	f70ba2f5d7	v2.0.3 ... PCB is ready to order.	2020-08-25 13:36:23 -07:00
Marshal Horn	ddad45a99f	Halfway done on board layout	2020-08-24 16:57:20 -07:00
Marshal Horn	b72cc2972f	v2.0.2 ... Added op-amp buffer to receiver, increased capacitor values Simplified over-voltage protection on analog inputs Modified RX switch to prevent turn-on during transmission Changed RX impedance to 50 ohms Added more buttons and encoders	2020-08-24 10:33:59 -07:00
Marshal Horn	1b499411dd	Fixed netlist issue ... 3.3v was connected to GND due to mis-wiring of the schmitt trigger	2020-08-18 12:26:58 -07:00
Marshal Horn	2f9034b7a4	Fixed error in QSD receiver low-pass filter	2020-08-18 07:52:56 -07:00
Marshal Horn	cc3ed9cfad	v2.0.1 ... Fixed part designation on op-amps. Replaced tl072 with lm4562 for simpler BOM. Added LED indicators on MCU Added RTC crystal, moved DIT and DAH to port B. Added thermistor to measure PA temperature Changed low-pass in PA to 5th-order elliptic Reduced capacitance of C406 due to mosfet drain capacitance	2020-08-18 07:30:19 -07:00
Marshal Horn	6fc16fbfcd	Updated schematic title blocks	2020-08-17 15:30:37 -07:00
Marshal Horn	7eb6127af1	Added test points for hard-to-probe signals ... Re-annotated all parts according to their schematic page	2020-08-17 14:30:11 -07:00
Marshal Horn	0d64ea768d	Chose ICs for USB interface	2020-08-17 12:23:37 -07:00
Marshal Horn	25748b32e4	Fixed filter values ... I had accidentally computed them in Hz, not radians/second	2020-08-14 22:34:40 -07:00
Marshal Horn	4c395dfc05	Moved USB peripherals to a new file ... USB peripherals draft is really rough. These chips have a lot of pins, and I'm not sure anyone is going to want to solder them.	2020-08-14 21:53:01 -07:00
Marshal Horn	f707013ba2	Created SWR meter	2020-08-14 21:32:31 -07:00
Marshal Horn	45a24f8562	Reverted back to simple hierarchical labels	2020-08-12 21:17:01 -07:00
Marshal Horn	02359c2960	Changed microcontrollers to Black Pill ... Since we have a lot more features that require connections between the amplifier, synthesizer, and microcontroller, I'm trying out the bus routing in the schematic to make it easier to add wires between the three modules.	2020-08-11 15:33:38 -07:00
Marshal Horn	279280add1	Added new 'synthesis' sheet	2020-08-07 21:17:11 -07:00