Double the output voltage (20vpp to 30vpp max).
How far do you think those modules can be pushed?
http://www.icstation.com/product_info.php?products_id=2224
http://www.electrodragon.com/product/ne555-pulse-signal-generator-driving-stepper-servo/
The two little modules are quite sensitive, to be set exactly at the frequency.
I've just finished assembling a kit dds FG which is good enough for low frequencies.
Maximum output amplitude: 10Vpp (no-load)
Output impedance :50 ω + 10%
How far do you think those modules can be pushed?
http://www.icstation.com/product_info.php?products_id=2224
http://www.electrodragon.com/product/ne555-pulse-signal-generator-driving-stepper-servo/
The two little modules are quite sensitive, to be set exactly at the frequency.
I've just finished assembling a kit dds FG which is good enough for low frequencies.
Maximum output amplitude: 10Vpp (no-load)
Output impedance :50 ω + 10%