uECG is back in stock!

A project log for uECG - small open source wireless ECG sensor

It's cheap, doesn't use a specialized heart rate AFE and can blink LEDs with your pulse :)

ultimate-roboticsUltimate Robotics 08/17/2021 at 19:590 Comments

So, this happened - uECG is again available on Tindie

It may be a couple months behind our original schedule (we aimed for May/June, now it's mid-August), but it's here now! On the way, we made a new device case 3D model (and 3D printed a lot of them!) and a new packaging design, ordered all kinds of supplies and accessories, shot a new video and took new product pictures, rewrote most of our description here and on Tindie from scratch, and had to figure out how exactly do we sell at all - with the new shipping rules regarding VAT in Europe.

Now that we did all of this, stock is back, and sales are open again! There's some updates on Tindie regarding shipping, but other than that it's pretty much the same as before - at least where the product and its options are concerned. In regard to the product page content, however... there's major changes. All of the text is rewritten, there's now a very detailed list of features, and the new pictures look nicer! We really like how the page looks now (we didn't before...).

uECG v.4.5. itself has a few differences with the previous versions - most of which we mentioned in the previous logs - like adding external sticker antenna and an IPEX1 connector and removing optocoupler (more on hardware changes in this log). Software-wise, we added OTA firmware update via Android app and a support for standard BLE connection, so uECG can now be seen as a standard BLE heart monitor in other apps (including popular fitness apps). For that, we rewrote A LOT - the bootloader had almost nothing in common with previous one. Some more good news: the new bootloader will be compatible with all previous uECG versions! We've finished writing it for new devices and will be adding compatibility over the next couple weeks. Meaning theoretically (we're 99% sure) any uECG we made can have the possibility of wireless firmware update and can be seen as a BLE device - possibly including even the 2.2 version. It will require updating the bootloader through wires with a programmer like STLink v2, however.

Anyway, time to see the new uECG 4.5 trailer!