NB: The old version using an Arduino nano is on the legacy_atmel branch.
Simple waveform generator, using AD9833 + rotary encoder + SSD1306 oled screen. It can output triangle/sinusoidal/rectangular waveforms.
That project is using lnArduino and requires a GD32F1/GD32F3/GD32VF1 or STM32F1 (bluepill)
Build instruction :
- edit platformConfig to specify your toolchain location
- edit mcuSelect.cmake to select your chip (default it GD32F1/STM32F1)
- mkdir build
- cd build && cmake ..
- make
Careful on the opamp. Take one that is :
- Rail to rail
- Have high enough V/us rising time
- Have high enough gain x bandwidth ratio
With a MCP602 as amplifider, the signal is good till ~ 350 kHz With a LM358 it's much lower, like ~ 150 kHZ
The square signal is directly from the ad9833 to avoid it being smoothed by the opamp.
