Frequency Counter DIY Kit 10Hz - 250MHz w/LCD, MB506 and open source code

Description

Frequency Counter Do It Yourself Kit with LCD 10Hz - 250MHz
Educational project for soldering!
based on PIC16F628A and MB506 prescaler
The electrical circuit based on PIC16F628A microprocessor and 1/64 configured MB506 Prescaler. For better accuracy and stability, the MCU clocked by active 4.000MHz oscillator.
Prescaler block has about 50 ohm input impedance and two protection diodes for high frequency. MB506 divide input frequency by 64 and then trigger the MCU to count square wave signal. After the MCU complete count procedure, the processor will
multiplies
the number back by 64 to allow real frequency be displayed on LCD. In this way you can measure HF and VHF radio waves signals.
To measure signals under 10MHz, or audio frequency range, you can use "LF" input that drive input transistor amplifier stage directly. Be sure your signal has enough amplitude to trigger T2, usually its about 1V peak to peak signal.
LCD Module 16x2 Black on Yellow color is included! SMT mini USB socket is already soldered!
All components are high quality!
MCU Software:
Microcontroller program written in mikrobasic compiler and it has Open Source. The kit has open source code for education purpose. Because the code size is less than 2K you can use
Mikroe Demo Basic Compiler for PIC to modify the program. The code provided as is with no technical support for its modifications.
Technical specification for Extended Package 250MHz Counter:
Low frequency input "LF" 10Hz - 5MHz
High frequency input "HF" 5MHz - 250MHz
Prescaler 1/64
Sampling 1000ms or 100ms
Resolution for 1000ms - 1Hz
Resolution for 100ms - 80Hz
Accuracy 1%
Power consumption 5V 30mA
SKU: RH-K-FC-1-250
eBay purchase includes 1pcs LCD 16x2 Green Backlight
To our valued customers, please read purchase terms before you bid or buy!
We'll use the best shipping method availiable to your destination, however some areas and some countries now will take much longer to receive international mail. Please allow longer delivery time than usually and conact me prior buying if you want to change delivery method to DHL Express (recommended).
Packaging:
The product dispatched carefully packed into antistatic bag and sturdy carton box.
We use only high quality and new packaging materials.
Technical issues and support:
If you purchase this item you are agree that you have skills and tools to perform required DIY soldering (or de-soldering) and you know how to connect additional external components or modules. All project components should be installed and soldered in proper polarity with proper connectors. Any hardware/software modifications
are not covered with warranty. If you have doubt it always better to ask for technical support before doing something. Please download and read carefully PDF user manual and product purchase terms.
Please read carefully product title, description and include list. Any questions are welcome. If you received broken or defective parts please contact us first, because we can resolve this problem in best way.
Handling time:
5 business days to process international orders required after receiving cleared payment. This does not include the number of business days the shipping service will take to deliver the item to you. We can upload a tracking number during handing time even before your package was transferred to logistic company for the delivery.
Shipping:
We dispatch your order during 1-5 business day and will upload a tracking number to eBay for USA buyers only. Take note, international shipping is more complicated and longer than domestic, that's why when you buy internationally it mean you are agree to wait for the package. For Economy International Delivery default stated time is 3-5 weeks. Some countries may take longer because of your country custom regulation rules or postal service. USA usually takes 2-4 weeks; Europe 1-4 weeks; Australia 2-4 weeks; Germany 3-4 weeks; Israel 3-7 days; Russian Federation 4-6 weeks; All other countries 3-5 weeks default delivery time.
During checkout you can select available and preferred shipping method for you country. We offer Economy International Shipping and Priority International Express Delivery. If you cannot wait 30-35 days for the delivery please select faster and more expensive method in advance! We are not accept any claims for shipping time if you have chosen Economy Shipping! Economy Shipping mean we'll send your items with Air Mail, but we cannot promise it will be fast, because it depends on post service, flights schedules, weather accidents, custom processing and other things that out of our control.
Tracking:
If you not received your package during 30 days please contact us first with "Details about item" request and not with opening "non-receiving case" directly. Take note, we ship through state export account and not from post office branch. This is the reason why your package is trackable only after it was sent abroad from Israel export and not at the date of collecting or at the date we uploaded a tracking number. Online tracking system in Israel displays information with big delays, post website provide tracking info
for reference only several days after your item was sent abroad
! Please be patient for the delivery and contact us if you have additional questions about shipping.
Custom & Duty Fee:
All international buyers are responsible to cover any possible custom fee or import tax that maybe applied at his/her country. We are obligated by export law of Israel to declare an order price as it was stated in your PayPal bill. German buyers, please remember when you buy that in Germany import custom rules require you to pay fee. We are not accept any claim because of your country custom regulation rules / delays / fee! Please contact your local custom office for more details about custom process and import tax.
You are responsible for any VAT, tariff, duty, taxes, handling fees, brokerage charges, customs clearance charges, etc. required by your country for importing consumer goods! There is no way for RH Electronics (the shipper) to predict your country's customs/fee habits, so be prepared to pay full VAT on the fully declared value of your order as well as any customs fees your postal system may charge you! If you do not pay the required brokerage fees, VAT, tariff, duty, taxes, handling fees, customs clearance charges, etc - we cannot issue any refunds.
Our shipping system is completely automated, and we cannot falsify customs forms. The customs forms will describe the cost of your order and contents as “Education DIY Kit for soldering”. We cannot mark orders as "gift" or lower the values.
Returns:
Accepted if you not started to solder/use device. In original package, including all components.
You'll need to cover return shipping cost.
Payment:
Paypal only for eBay purchases.
V.A.T.:
If you live in Israel please take note, all buyers with DELIVERY ADDRESS WITHIN ISRAEL HAVE TO PAY 18% VAT! Refusing to pay tax will force us to cancel the order. If you live in Israel and want to purchase our item on eBay please contact us first with "Shipping details" request and we'll send you eBay offer with adjusted shipping price and VAT included.
Thank you for your positive feedback!