diff options
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 12 |
1 files changed, 4 insertions, 8 deletions
@@ -7,7 +7,7 @@ combined with the [Anglian 3L transverter](http://www.g4ddk.com/Products.html). * Designed in KiCad * Meant to be used with a microwave transverter * But also stand-alone 28MHz and 144MHz (The IF bands) -* Using an ATMega controller +* Using a STM32F103C8T6 controller * Si5351 clock source (generates 3 clocks) * An LCD display * Discarded ideas @@ -20,17 +20,13 @@ TODO before ordering the PCB * Microphone input * Verify microphone pinout for MH-42 - * Is audio level at SSM2167 output sufficient for the SA602A ? * CW * Does the trick with the DC bias to leak the LO work ? * Not tested, but plan B done (J306) + * Use an additional PWM output for plan B? * Put sidetone volume setting before RV303? -* Consider reordering UI pins, if it simplifies routing - * Mockup location of potentiometers, encoder, display and buttons - * Check cabling - * Si5153 * Check desired frequencies can be achieved: * LO1 = 28 - 4.9152 + VFO @@ -44,7 +40,7 @@ PCB Assembly Plan * Check output voltages * Check drop under load -2. ATmega +2. STM32F103C8T6 * Programming * Sidetone low-pass * Probably need to do a UI proto already @@ -53,7 +49,7 @@ PCB Assembly Plan * Check I2C works 4. 8V and 5V relay - * Check switching with ATmega and validate resistors + * Check switching with microcontroller and validate resistors 5. Baseband 1. Crystal filter shape |