🛠️ PIC Microcontroller–Based Frequency Counter Kit (1 Hz–50 MHz, 5-Digit Display)

DIY frequency counter built around a PIC MCU with crystal-measurement capability and programmable frequency offset (add/subtract). Perfect for RF hobbyists, school labs, and bench testing.

🔧 Key Features

• 📏 Wide Frequency Range: 1 Hz – 50 MHz

• 🔢 Five-Digit Readout: clear display formats such as x.xxxx kHz / x.xxxx MHz / xx.xxx MHz

• 🧪 Crystal Tester: measures common passive crystals (e.g., 4–40 MHz)

• ➕➖ Programmable Offset: add or subtract IF/reference offsets for radio work

• 🔄 Auto Range Conversion: automatic gate-time/range switching—no manual toggling

• 💡 Power-Saving Mode: display sleeps if the reading doesn’t change for ~15 s

• 🔌 Flexible Power: USB 5 V, external DC, or 9 V battery options

• 🧩 Learn-by-Building: through-hole assembly; excellent for solder practice and fundamentals

📐 Specifications

• Frequency Span: 1 Hz–50 MHz

• Resolution: five digits (examples: 0.0050 kHz, 4.5765 MHz, 11.059 MHz)

• Display: 5× seven-segment LEDs

• MCU: PIC microcontroller (crystal-referenced)

• PCB Size: 80 × 53 mm

• Power: 5 V USB or DC supply; 9 V battery compatible (as provided by your build)

🧭 Typical Applications

• Crystal sorting/trimming (RF, clocks)

• DIY transmitter/receiver frequency checks

• Function-generator and oscillator verification

• Classroom demonstrations & electronics training

🧠 Assembly & Use Tips

• Use a fine-tip iron + flux; mind LED orientation and polarized parts.

• Keep input leads short to minimize noise at higher frequencies.

• For unknown/high-level sources, add a simple attenuator and observe safe limits.

• After assembly, verify with a known reference (e.g., your on-board test point or a stable oscillator).

📦 Package Includes

• 1 × Frequency Counter Meter Tester Kit (unassembled DIY kit)
  (Power source, probe leads, and enclosure are not included unless shown/selected in your listing options.)

💥 Volume Discount Offer — Buy More & Save

• 10% OFF when you buy 2 units

• 15% OFF when you buy 3 units

• 20% OFF when you buy 4 or more units
  Discount auto-applied at checkout.

🇺🇸 Premium Support & Shipping

• 🇺🇸 US Stock / Fast Shipping — 2–4 day delivery from Oklahoma, USA. Your purchase supports a US-based small business.

• 🧪 Quality Checked & Tested — Spot-checked before shipping.

• 💬 Local Support — English help within hours, not days.

• 🔁 Easy Returns — 30-day returns; we pay return shipping.

• 📦 Professional Packaging — Safe delivery, 100% guaranteed.