NASA
Verified Top PickCircuitMess is stopping production of its NASA STEM kits and has cut prices by up to 40% while stock lasts. The NASA Artemis Watch 2.0 kit is $89, down from $149, as shown on its home page on 29 October 2026.
Limited Time Offer
Bundle
VerifiedThe Mars Exploration Bundle is listed at $359 instead of $537, and comes with free tools, as shown in the Hot Deals section on 29 October 2026.
Limited Time Offer
Bundle
VerifiedCircuitMess groups its best-selling build and code kits in the Bestsellers Bundle at $339, down from $467, as shown in the Hot Deals section on 29 October 2026.
Limited Time Offer
Bundle
VerifiedThe Wacky Collector's Bundle is priced at $125, down from $169.91, as shown in the Hot Deals section of the CircuitMess home page on 29 October 2026.
Limited Time Offer
Sign-Up
VerifiedSign up with your email on circuitmess.com to get 10% off, as offered on the shop's sign-up form on 29 October 2026.
Limited Time Offer
$96+
VerifiedOrders over $96 ship free with tracking; below that, shipping is $15. Orders go out from the nearest of seven regional warehouses, one of them in the US, as stated in the shop's shipping answers on 29 October 2026.
Limited Time Offer
Price
VerifiedClockstar 2.0, a kit to build and code your own smartwatch that connects to a phone, is priced at $99 on CircuitMess, as shown on 29 October 2026.
Limited Time Offer
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Extra codes from partner brands, refreshed alongside this store's offers.
A practical savings guide for shoppers using CircuitMess US offers.
CircuitMess does not show a public code on its site, but signing up with your email gets 10% off. The bigger savings are in its Hot Deals: the company is ending production of its NASA STEM kits and has cut them by up to 40%, with the NASA Artemis Watch 2.0 at $89 instead of $149. Bundles are reduced too, including the Mars Exploration Bundle at $359 (was $537, with free tools), the Bestsellers Bundle at $339 (was $467) and the Wacky Collector's Bundle at $125 (was $169.91). Single kits include Clockstar 2.0 at $99 and Chatter 2.0 at $149. The shop also runs a free VIP list that opens its Black Friday deals 7 days before everyone else.
Orders over $96 ship free with tracking. Below $96, shipping is $15. Each order goes out from the nearest of its warehouses in the EU, the US, Canada, Saudi Arabia, the UK, China and Australia.
You have 30 days after delivery to request a return, but the policy covers defective items in the condition you received them, with proof of purchase. CircuitMess sends a return label when the problem is its mistake, such as a wrong, incomplete or damaged kit. Contact the shop before sending anything back.
Offers on this page were checked on the shop's own website on 29 October 2026.
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