Shipping and delivery
We are proud to offer international shipping services that currently operate in over 200 countries and islands worldwide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
How do you ship packages?
Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:
| Location |
*Estimated Shipping Time |
| United States |
10-30 Business days |
| Canada, Europe |
10-30 Business days |
| Australia, New Zealand |
10-30 Business days |
| Central & South America |
15-30 Business days |
| Asia |
10-20 Business days |
| Africa |
15-45 Business days |
*This doesn’t include our 2-5 day processing time.
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says "no information available at the moment".
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you have specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
Refunds & returns policy
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- You do not receive them within the guaranteed time (45 days not including 2-5 day processing)
- You receive the wrong item
- You do not want the product you have received (but you must return the item at your expense and the item must be unused)
We do not issue the refund if:
- Your order does not arrive due to factors within your control (e.g. providing the wrong shipping address)
- Your order does not arrive due to exceptional circumstances outside our control (e.g. not cleared by customs, delayed by a natural disaster)
- Other exceptional circumstances outside the control of tech.diydynamic.com
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on page.
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
A***e –
Well received, just do the editing, it would be my first Assembly😊. I hope no component is missing. The packaging is good, I recommend.
K***z –
not tested yet, but I hope it will work
p***a –
Very good material. In the first fountain I have mounted I lacked a resistance of 27 K. It may also be that it fell without realizing it. Summarizing: first-rate Material and with an unbeatable price.
L***c –
Paket je stigao Sve je OK I ispravno. Kada GA sastavim ojavljujem video on SVOM YT Kanal ljubaljuba
T***t –
Order received quickly in 10 days, material is compliant, serious seller
Customer –
Thx!
s***y –
Double-sided metal plating board 84x84mm, silk screen printing with denominations. I hope it will be good BP
g***o –
pakage ok, fast dlivery , I havw not yet testested the goods I will be back
C***U –
Very good PCB quality
G***o –
Very good merchandise and above all a very good quality I highly recommend the product and seller
C***a –
Need to be welded to test the operation
M***s –
No documentation included, but all parts clearly marked on the PCB. Soldered the kit without problems. Not that you have to obtain heat sink separately (which makes sense, since you may plan to use an enclosure with given dimensions).
S***a –
Product received, thank you very much, no complaints
Customer –
The shipment has arrived intact-another power supply-looks OK-I recommend!!!
Customer –
Looks good, after installation I’ll write again ..
C***g –
Could not resist. Have a few and to buy one built.. Must have. Fast delivery too. Thank you
w***r –
This kit is of very good quality. I’m yrès satisfied
b***h –
I received the order within the specified time frame. All TL081 are not working. And so normal, even the grinds came with nuts.
S***a –
Excellent Product arrived on time thank you
V***c –
Thank you, everything is fine, the goods match the description, excellent seller, I recommend.
H***r –
Hamar megjött. Sokatrende ltem ebből eddig nagyjából mind mvez ködik,össze Rakás után.
A***r –
Excellent article good quality
a***r –
Nice small controlled circuit wired, output voltage adjustable from 0 to 26 vcc, adjustable current limitation. Ideal for small labo applications but not suitable if one needs power. Delivered without a dissipator on the transistor ballast D that heats up a lot (to have 5v/mA at the output the transistor must dissipate 21 V * 170 = 3,6 W… I prefer not to do the calculation with 3 A🥵)
A***g –
Very fast, reliable delivery-1A-gladly again-thank you 🙂
a***i –
Order Received, everything OK, as described very valid. Recommended.
A***V –
Delivery was fast, everything is fine. I can’t say about the quality a lot as I didn’t solder it yet.
S***K –
The power supply is consistent with the description of the seller. Not tested. The kit does not include an electronic scheme, as well as how to start and adjust. That’s Why 4 *
V***n –
I bought two kits. Assembled both of them. Both doesn’t work. Kit doesn’t have schematic diagram and check point to troubleshoot. Bought sockets for microchips and new microchips. Doesn’t help at all. And I’m professional electronic-technician. Do not recommend to buy this kits.
zahidislam2000@gmail.com –
Sorry to hear about your experience! We appreciate your feedback and will work on improving the kit with better documentation. 🙏
a***r –
All good. Trimmer scarves, accessories in a regular sling. I’m a hard man.
C***i –
good product, as described
D***o –
The plate comes complete with its components. I have still assembled it and I have not tested the components either
Customer –
nice item, well packed, fast delivery. recommend this seller
F***a –
Everything OK
J***a –
Absolutely perfect workmanship – soldered with wool and professionally. An analog source that does not interfere! I recommend!!!!!
a***a –
Super recommend great quality products
Customer –
I have purchased this board several times and really like it. The trick is to make sure supply voltage will not exceed TL081 op amp’s max. rating. I used fairly common hacks from the Net with my own twist: note: u1 is the voltage compare IC with a 4K7 on its left; u3 is the current control with a 56K on its left; u2 has a 9104 transistor on its 11 o’clock direction. – change u2 to a higher voltage capable op amp (MC34081, TLE2141, OP07, etc. – DC V+ first goes through a LM317T to drop voltage down to 33V, this thru a 1N4148 to feed u2. – this 33V thru a series 10V zener to drop V+ to 23V to feed u1 – this 23V thru 4x 1N4148 diodes in series to feed u3 as well as 9015 and 2K2 resistor on TR’s right side. (optional) – the 23V can go to a 78L05 to become 5V. this 5V can then go through a voltage inverter/negative voltage generator (switched cap type ICL7660 or mc34083 switcher type) to generate -5V for op amp’s V-
zahidislam2000@gmail.com –
Thank you for your detailed insights! Your modifications truly enhance the board’s performance. 🔧⚡ Happy experimenting! 😊
V***a –
Delivery to the Post Office-10 days from the date of order. Did not connect. I’ll test one of these days. The parts are slightly bent during transportation. Store and seller-recommend.
d***i –
Very good power supply, I have mounted it and if you are careful in the assembly, or rather do not make mistakes it works very well
T***A –
I appreciate prompt response. The product is satisfactory. Packing is a polite and reliable seller.
В***в –
received, everything is in good condition
Fred –
Needs Power Supply – Were is the transformer or power adapter ?
zahidislam2000@gmail.com –
Please follow this link to buy this product https://tech.diydynamic.com/product/0-30v-dc-power-supply-kit/