* Estimated delivery times start from the date of shipment, excluding processing time.
* Actual delivery times may vary due to holidays, weather conditions, or customs delays.
Return items will be accepted within 40 days when is the date of receiving the goods. Customized items cannot be returned or exchanged. Items bought with an e-gift card are exchangeable only; refunds are not applicable.
Free Gift
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.
Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.
1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side.Final sales items or free gifts are not acceptable for a return.To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier. We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom
color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +8619359849471
2.Refund Policy
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment.Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +8619359849471
Product introduction:This is a simple oscilloscope made with an STC8A8K microcontroller. It only requires a small amount of components and is easy to assemble. The function can cover simple measurements. This kit aims to build a basic oscilloscope model with the simplest possible principles and as little hardware as possible. The source code is easy to understand, and it is also very suitable for interested electronic enthusiasts to learn and research while using the product.
*Trigger level: For repetitive signals, the trigger level stabilises the display. For single-shot signals, the trigger level captures it.*Trigger Slope: The trigger slope determines whether the trigger point is on the rising or falling edge of the signal.*Trigger Mode:*Auto Mode: continuous scanning. Click the encoder to stop or run sampling. If triggered, the waveform will be shown on the display and the trigger position will be placed in the centre of the graph. Otherwise, the waveform will scroll irregularly and display "Fail".*Common Mode: After the pre-sampling is completed, you can input the signal. If triggered, the waveform will be shown on the display, waiting for a new trigger. If there is no new trigger, the waveform will be kept.*Single Mode: After the pre-sampling is completed, the signal can be input. If triggered, the waveform is displayed and the sampling is stopped. User needs single point encoder to start the next sampling.*When in common mode and single mode, make sure the trigger level has been adjusted correctly, otherwise the waveform will not be shown on the display.*Indicator light: Normally the indicator light is on to indicate that sampling is running. *Save Setup: When exiting the setup interface, all parameters of the setup interface and main interface will be saved in EEPROM.
Nice DIY kit for SMD soldering practice. The range of applications is quiet limited due to small bandwidth, but I have ordered it just for fun and practice with SMD components.
Nice DIY kit for SMD soldering practice. The range of applications is quiet limited due to small bandwidth, but I have ordered it just for fun and practice with SMD components.
Nice DIY kit for SMD soldering practice. The range of applications is quiet limited due to small bandwidth, but I have ordered it just for fun and practice with SMD components.
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
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A part of the QA has been auto-translated.
0
Q:
Assembly and User Guide download doesn't work. Where can I get it from?
Assembly and User Guide download doesn't work. Where can I get it from?<br/>I have tried the 56dz website but the supplied password for the download doesn't work either.
You can check whether your browser has disabled the banggood pop-up window. Or your browser's defense is too high, which makes the document unable to download.
You can check whether your browser has disabled the banggood pop-up window. Or your browser's defense is too high, which makes the document unable to download.
Answered by Nexet7 on 04/05/2025Helpful (0)
0
Q:
There should be a version offered with pre-soldered SM components for those of us who are not used to dealing with this type of component.
There should be a version offered with pre-soldered SM components for those of us who are not used to dealing with this type of component.<br/>I have bought two of these and neither work probably due to my soldering.<br/>Is this option planned in the future?