Frequency-Meter
About the Frequency-Meter PCB
Frequency-Meter is an open source PCB design by rakshit9695, published on GitHub. It is a 2-layer board measuring 88 × 94.5 mm, with 28 components from 9 distinct parts.
Other key parts include the 7490, 74AUC1G74, 7447, 74151 and 7408. By type, the board carries 18 ICs, 5 resistors, 3 diodes and 2 LEDs.
It belongs with the displays & leds designs in this gallery.
From the project
Created a Frequency Meter which can calculate an unknown frequency of 0.00 to 99.99 successfully using a 100Hz Time Base Frequency
The Frequency Meter is a digital circuit designed to measure an unknown input frequency in the range of 0.00 Hz to 99.99 Hz. It operates using a 100 Hz Time Base Frequency as a reference for measurement accuracy.
This project includes both the schematic and PCB design created using KiCad. The design is compact and intended for educational or experimental use in lab environments or as a standalone frequency counter module.
Main components on the Frequency-Meter
Frequency-Meter bill of materials (BOM)
28 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 7490 | DIP254P762X508-14 | U1, U3, U7, U12 |
| 9 | 74AUC1G74 | SOP50P310X90-8N | U2, U4, U8, U10, U14, U15, U17, U18 +1 |
| 2 | 7447 | DIP794W45P254L1969H508Q16 | U9, U11 |
| 1 | 74151 | DIP762W46P254L1930H508Q16 | U13 |
| 1 | 7408 | DIP794W45P254L1969H508Q14 | U16 |
| 1 | 7404 | DIP794W45P254L1969H508Q14 | U20 |
| 2 | LTS-6980HR | 7SegmentLED_LTS6760_LTS6780 | AFF1, AFF2 |
| 3 | IR26-21C_L110_TR8 | LED_1206_3216Metric | D1, D2, D3 |
| 5 | R | R_0201_0603Metric | R1, R2, R3, R4, R5 |
Frequency-Meter design files
The KiCad project lives in the rakshit9695/Frequency-Meter repository on GitHub; these links point at the commit this page was built from.
- Layout0682.kicad_pcb
- Schematic0682.kicad_sch
Frequency-Meter: common questions
How big is the Frequency-Meter PCB?
The Frequency-Meter measures 88 × 94.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Frequency-Meter?
28 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Frequency-Meter design files?
From the rakshit9695/Frequency-Meter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Frequency-Meter design in my own project?
The repository has no license, so all rights stay with rakshit9695. Use it as a reference, and ask the author before reusing the design.
Similar boards
View base
scottbez1
81.2 × 81.2 mm81 parts2LApache-2.022.2k
BM28B0.6-24DSBreakout
15.2 × 35.6 mm3 parts2LApache-2.022.2k
LevelShifterBreakout
15.2 × 20.3 mm5 parts2LApache-2.022.2k
View screen
35 × 35 mm12 parts2LApache-2.022.2k
Display eval
byrantech
52.1 × 22.6 mm12 parts4LMIT4.3k
ChainlinkDriverTester
198.1 × 95.3 mm123 parts2LApache-2.04.2k