Frequency counter, very high accuracy
Source: Thingiverse by akosboda
The Frequency counter, very high accuracy is a free printable 3D model from Thingiverse by akosboda. The counter is a GPS-disciplined instrument with atomic accuracy, measuring frequency with sub-ppm precision across the 1 Hz to 40 MHz range. You can download the STL file from the original listing below and print it at home.
About this model
The counter is a GPS-disciplined instrument with atomic accuracy, measuring frequency with sub-ppm precision across the 1 Hz to 40 MHz range. The instrument can be used to fine tune quartz oscillators. Upon startup, the ESP32-P4 operates in counter mode: it opens a counter gate for one second and counts the incoming pulses. This count, which represents the frequency, is displayed in hertz on the TFT. The accuracy and granularity of this method are enhanced in the second mode, known as tuning mode. The rough count is known already, and the user can modify this up or down to set up the target frequency for the tuning. In this mode, the time gap between the edge of the last incoming pulse and the 1 PPS pulse is measured using the highest possible frequency of 360 MHz. Since the resolution of …
Frequently asked questions
- Is this 3D model free to download?
- Yes. Frequency counter, very high accuracy is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link above to open the original listing.
- Where is the STL hosted?
- The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by akosboda.
- Who made this model?
- Designed by akosboda, published on Thingiverse. Please credit the creator when sharing your print online.
- Can I print this at home?
- Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.
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