Latest revision as of 08:46, 20 May 2023

@@ Line 1: / Line 1: @@
+=Quadrature counter=
+* https://www.allaboutcircuits.com/industry-articles/designing-quadrature-encoder-counter-with-spi-bus/
 =Frequency counting=
+* '''RF''' https://github.com/swharden/RasPi-Frequency-Counter
+* https://blog.adafruit.com/2021/04/28/a-low-cost-100mhz-frequency-meter-technoblogy-microchipmakes/
+* '''pyhon''' https://atman-iot.com/blog/raspberry-pi-benchmark/
+* IC counters https://www.ti.com/lit/ds/symlink/sn74lv8154.pdf
+==ATTiny frequency counter==
+* http://www.technoblogy.com/show?20B4
 ==pico frequency counting==
-** https://github.com/phoreglad/pico-MP-modules/tree/main/PWMCounter
+* https://github.com/phoreglad/pico-MP-modules/tree/main/PWMCounter
-** https://github.com/dpwe/FreqCountRP2
+* https://github.com/dpwe/FreqCountRP2
-==pi frequency counring==
+==pi frequency counting==
 * http://abyz.me.uk/rpi/pigpio/index.html
+=Clock Calendar=
+* https://www.mouser.com/datasheet/2/302/PCF8593-1127704.pdf
 =pi GPIO Performance=
 * https://codeandlife.com/2012/07/03/benchmarking-raspberry-pi-gpio-speed/
+=clock generator=
+* https://www.adafruit.com/product/2045
+** https://github.com/etherkit/Si5351Arduino
+==VFO==
+* https://projecthub.arduino.cc/CesarSound/3bd1c1cc-1971-41e9-890e-0451c35720e0
+* https://gist.github.com/NT7S/24206e12342e4631e2a7
+* https://qrp-labs.com/vfo.html
+* https://www.qsl.net/pa2ohh/20vfobfo.htm
 [[category:public]]
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 [[category:pi]]
 [[category:pico]]
+[[category:RF]]