User Tools

Site Tools


pixo_replacement


This is an old revision of the document!


Raspberry Pi XO Replacement

Success!

Made an initial attempt on the evening of 2023-03-26 on a Pi 2 B. Drop in replacement is working surprisingly well right off. Have not performed any longitudinal testing yet, but initial tracking numbers are positive.

Pi 2 B with replaced XO Pi 2 B with stock XO

Notable Test Points

PP3 GND
PP4 GND
PP5 GND
PP6 GND
PP7 5V after polyfuse
PP8 3V3
PP9 1V8

Pi 3 B v1.2 Stock XO

New TCXO

Quantifying Results

chrony tracking

Python Frequency Generator

sigGen.py
#!/usr/bin/python
 
import RPi.GPIO as GPIO
from time import sleep
 
GPIO.setmode(GPIO.BCM)
GPIO.setup(10,GPIO.OUT)
p=GPIO.PWM(10,1140)
p.start(20)
sleep(3600)
p.stop()
GPIO.cleanup()
exit()
pixo_replacement.1680102133.txt.gz ยท Last modified: 2024/11/14 02:30 (external edit)

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki