Frequently Asked Questions

On this page we try to answer some of the questions most frequently asked about our products and the process of ordering them. For general information about our products please see the product descriptions on this website. If you have any specific questions about our products or if you require any further information please contact us:

Q. How do I tell you I want this, that or the other option on my order? Why can't I add non-standard options via your website's order form?
A. On our website you can order any of our standard products from our product and price list subject to our standard terms and conditions of sale. If you want anything else, courier shipping for example or any kind of customization you need to email us before you make your order to discuss your requirements. Please do not make an order for a standard product then follow the order with requests for customization or other non-standard requests.
Q. How do I make an order? Can I have a quote? General questions about the ordering process?
A. Making an order from us is very simple. Our website has full details of all of our products. Please browse them from our homepage or product and price list. If after reading the product descriptions and downloading the documentation you have any specific questions then please contact us by email and we will do our best to answer you. To make an order simply add the products you require to our shopping cart. The cart will show you the total and the delivery charge for your location. If you need a quote, please print out the shopping cart when you have made your selection. When your selection is complete you can checkout after reading our standard terms and conditions of sale. First, fill in our order form, then proceed to the WorldPay secure server to make your payment by credit card. After you have made your order, we will acknowledge it and give you an indication of when your order will ship. This will normally be a lead time of 5 - 10 working days. During this period your order will be configured and tested. It will then be packed and dispatched. We ship via Royal Mail in the UK and registered airmail for the rest of the world or by courier. You will be informed of the dispatch of your order by email and given the likely time before the items will be delivered. No printed documentation will be sent with your order so you should download the instructions for use and installation from our website.

The invoice for your order will be included with the package in the documents enclosed wallet which serves as the address label. If you have any questions or your require further specific information after you receive your order please contact us by email We ship via services which require a signature on delivery. Always check for a notification from your post office or courier if your order is overdue. Please inform us by email if your order is overdue and we will follow it up.

Q. Can I arrange to have my order shipped using my courier account?
A. No. We regret that it is not possible for us to arrange shipping with customer courier accounts. Our courier booking system is computerised and has no facility for using other accounts. The standard shipping quoted on our website is for registered airmail or courier shipping depending on the value and weight of the order. If you wish to upgrade to courier shipping please contact us before you make your order and we will provide you with a quote. The lead time before dispatch will be the same.

Q. General questions about dispatch and delivery times?
A. Please read our standard terms and conditions of sale. All orders are normally processed and dispatched within 10 working days. This does not mean that all orders are held for exactly 10 working days, but that the time to process an order can vary due to the size of the order and the number of other orders being processed at the same time. Therefore we give this as a realistic guideline based on our experience. When you make your order you will always be informed of the actual likely lead time before dispatch.

Q. Is this item in stock?
A. All the items shown in our product and price list are available for purchase, subject to our standard terms and conditions of sale.
Q. Are the GPS-PIE slice boards compatible with single board computers other than the Raspberry Pi, such as the Banana Pi 2M Zero?
A. We only support the use of the GPS-PIE slice modules on the Raspberry Pi. There are many other single board computers with identical or very similar form factors and it is impossible for us to verify our boards on them all. However we have written a general SBC guide to help you if you are considering using another SBC.

Q. Could you do a custom modification of one of your products for me?
A. No. We do not design and develop one off products or systems for people which are not based on our existing products.

Q. I purchased one of your units some time ago and it has stopped working. Can I have it replaced?
A. Please see our terms and conditions of sale for our returns procedure. We offer a 12 month warranty on all the products we sell. This covers problems arising from defects in manuafacture in both hardware and software. If a unit is delivered to you with faulty hardware or errors in the software, we will repair or replace the unit. However this is a warranty and NOT a service agreement. If the unit you buy fails because of the way you connect it or because of a defect in the system you connect it to, then this failure will not be covered by the warranty. Like any electrical equipment our products can be damaged if connected incorrectly. In particular care should be taken when making solder connections to any of our board products. If you put the soldering iron in the wrong place you can damage the board. Please follow the instructions to avoid problems. Our products are in service in many applications. They have proven to be extremely reliable in normal use. Overall the failure rate has been much less than 1%, but one avoidable failure is one too many. When correctly connected our units should provide years of trouble free service. It is beyond the scope of our documentation to advise on avoiding all the common problems, It is your responsibility to ensure that such problems do not occur as they can result in the unit being degraded or damaged. For this reason it is important that all installation is done by technically competent people with an understanding of the issues relevant to the specific system being set up. Please do not take the fully tested and working unit we send you, shove it into a rat's nest of home made connectors and then expect us to accecpt responsibility when you get a short circuit. Our products will be destroyed if power is allowed to flow through the wrong connectors. When damage to a returned item is not covered by our warranty we can, at our discretion, try to repair the damage for fixed fee. This is not always possible when there has been extensive burning to the board. The repair fee is not refundable. If we are not able to repair the damage the repair fee will be credited to against a replacement order.

Q. Will your product work for my particular application?
A. We cannot tell you if one of our products is suitable for a specific application as we cannot test it as you will use it. We can only guarantee that our products will work as described on this website. We therefore specifically disclaim suitability for any particular application. Please see our terms and conditions of sale. It is up to you to read the information we provide here on this website, ask us any relevant questions, then assess the suitability of the products for your application.

Q. Can you give a quote in US dollars? Euros? etc.
A. No. Our prices are set in British pounds sterling (GBP) and we do not provide quotes in other currencies. You can get a guide to the order total in your currency using the currency conversion form in our shopping cart. If you pay by credit card the WorldPay secure server will give you the option to pay in US dollars, Australian dollars or Euros as well as GBP. The price you pay will be what you are billed in your own currency.

Q. Can I just order your products and get everything I'll need as a complete unit and not need to program anything?
A. No. All the GPS-PIE slice products require the ability to design and write software. They are fully functional as described, but fitness for any particular purpose is specifically disclaimed. Please read our terms and conditions of sale before ordering..

Q. Do you have a discounted reseller price list?
A. No, we are only interested in value added resellers who are technically competent to support our products.

Q. Is the GPS-PIE slice module board sold as a kit? Is the PCB available separately?
A. No. The GPS-PIE slice module board is only available fully assembled. We do not sell kits, parts or schematics for you to make your own boards. All of this information is freely available on the web. If you decide to design your own board then you should do so using these resources

Q. Are all your products RoHS compliant?
A. Yes, all our products and accessories are RoHS compliant and meet the requirements of the Electromagnetic Compatibility Directives (89/336/EEC,92/31/EEC).

Q. I want to design my own project, can you supply me with a schematic? I've designed and built my own project, but it won't work. I've bought a kit from somewhere, but I can't assemble it. Can you help?
A. No. We only support our own products. We do not provide information or support for other companies products or homebrew projects.

Q. Do you accept company purchase orders?
A. No. Please see our terms and conditions of sale.

Q. I have tried to make an order with a credit card but it has been declined with an error code [WXXX]. What does this mean?
A. There are a number of reasons for your credit card to be declined by WorldPay. If you have a problem please contact your credit card issuer first. The most common reason for an order to be declined is that the card has been blocked from usage, either usage on the internet, for customer not present transactions, or generally. This is normally done by your card issuer as a security measure. The card may be blocked automatically if you have have spent more than usual or used the card in a way the automatic system sees as suspect. Once you have contacted your card issuer they will normally verify your card and you will be free to use it. We strongly recommend that customers sign up to either of the online cardholder authentication schemes, Verified by Visa or MasterCard SecureCode. Both allow you to set up a password with your card issuer to prevent unauthorised use of your card online. Contact your card issuer for details.

If you find your card is persistently rejected then order with a cheque or money order.

Please do not repeatedly try to use a number of different credit card numbers for the same order. Even if you eventually get the order to go through we will decline it.

Q. I made an order via your website, it was accepted at the time, but now you have declined it and are not answering my emails. Why?
A. There are several levels of security that operate when you make a transaction via WorldPay on this website. The initial processing of your credit card details and the confirmation email sent by WorldPay do not indicate that we have accepted your order. Please see our terms and conditions of sale. Your order will be rejected if, when the order and your details are passed to us by WorldPay and reviewed, there are security concerns raised. This may be because you have given an incorrect billing address, you are using a free web based email address such as,, etc or there are other factors that lead us to suspect that your order might be fraudulent. Once we have informed you that we have declined the order and reversed the credit card transaction we will not discuss the matter further. As you will be informed at that time if you wish to make an order using a cheque or money order you may do so.
Your order will also be cancelled if we are unable to contact you if we need to clarify your order details. This mainly happens when customers ignore information on this website and order accessories which are not available separately or items which cannot be used together.

Q. Why when I have already made an order and given you my credit card details do I have to give you them again to amend the order to include an extra item or a postage charge?
A. We don't hold your credit card details. If you did not select the correct postage charge when you made your order or you want to add an item to your order then you will have to do so via the amendment form we will set up for you on our website. We cannot simply add items to your order for obvious security reasons.



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