An open source wearable ECG sensor - and a development plaftorm for your research and projects
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Dec 4, 2023
PLEASE READ DESCRIPTION BELOW - We've moved our shop to Etsy.
https://ultimaterobotics.etsy.com
PLEASE READ - WE MOVED SHOP TO ETSY December 4, 2023 We recently learned that Tindie suddenly blocked sellers from Ukraine, so we can't sell anymore. That's why the shipping options don't work. So …
Read More…December 4, 2023
We recently learned that Tindie suddenly blocked sellers from Ukraine, so we can't sell anymore. That's why the shipping options don't work.
So we reopened on Etsy: Ultimate Robotics Etsy Shop
Here's the link to uECG: uECG on Etsy
Also, make sure to join our Discord! Ultimate Robotics discord server
Sorry for the wait and thanks for being so patient!
August 16, 2023 We're back from vacation and uECG is back in stock!
March 22, 2023
uECG is back and we have reopened sales! It’s a small batch, so get them while you can! We have made some changes to the board that will hopefully make it (especially the IMU) more reliable and efficient.
As always, we will try to ship your orders within 3 days, but they can take longer after sales reopen.
Changelog for uECG v.4.52:
November 26, 2022
We have launched our second device, uMyo! It's a single-channel EMG sensor with both wet and dry electrodes. You can check it out here. Also, we wrote a small post about the blackouts in Ukraine (which you've probably read about in the news) here. Check it out, bet you've never seen anything like this.
June 10, 2022
We have reopened uECG sales today (and a large firmware update)
June 7, 2022
A tribute to our friend, veteran and fellow maker, Denys Antipov
March 17, 2022
War update #2 (volunteering and living from day to day)
Feb 28, 2022
War in Ukraine (that's where we are) update
Important information for buyers from Europe
Please don't buy more than 1 uECG in one order to Europe (we can't restrict the amount automatically via shop). This is because we have to declare true value for all shipments to Europe, and there is a different export procedure for shipments over 150 EUR (much more paperwork, requires customs broker help which costs a lot, etc). Hope this changes, but for now, if you're from Europe, please only buy one uECG (including any accessories). If you need more than two, please place two or more orders for different recipients, or order with at least 1 week interval. Thanks!
Unfortunately, there’s no way to avoid it (we checked). Most importantly, for now you'll have to do it on your side when you receive the package. Tindie is in the process of implementing it on their side (so you could pay it automatically when you order), but it is not done yet, so we can't charge you VAT when selling. There can also be delays because of customs processing. We hope this situation will change soon!
If you're not in Europe, these restrictions don't apply. Thanks for reading!
Join our Discord server for uECG, uMyo and general open source talks! Here, you'll get support from the team and other members. More people come every day, and it's slowly becoming a community. We'll be glad to see you there!
Read all uECG news here in an updated log on our Hackaday page. We also generally post our project logs there, where we dive into development process.
User manual and troubleshooting: Instructions on Hackaday
Code and hardware: Github
Vlogs, teasers and videos on all of our projects: YouTube channel
We post a lot of updates, videos, reels and pictures of the process on our Instagram
Our fb blog (in Ukrainian): Facebook
It’s an open source hardware wearable ECG sensor that can be used as a development platform, a research tool, or as a standalone device. We made uECG for everyone, and it will be most useful to researchers, students, developers, makers and healthcare professionals.
We’re a team of four people from Ukraine and we’ve been developing uECG since 2019. We try our best, but it’s still more a device for development or research than a consumer product. We 3D print our device cases, do final assembly manually, and ship devices ourselves. However, we test and thoroughly check everything, so the devices we ship are made to the best of our abilities at the moment. We also provide support to all buyers (and non-buyers too :). We’re always developing and improving our technology, production and shipping, so there’s going to be more updates all the time!
Connection. Works as generic pulse metering device with fitness apps, uses our custom BLE protocol for ECG data transfer, and custom RF protocol for streaming to PC at 1 kHz (using our USB receiver base).
Signal filtering. Noise filtering algorithm is used to remove 50/60 Hz noise from ECG signal while keeping high frequency components of ECG.
Signal processing. Android app calculates BPM, HRV, GSR and RR interval, displays accelerometer data, and builds Poincare plots. Similar functions also available in desktop app. Onboard firmware can also process and stream both ECG and EMG signal.
Platform support. Our Android app is used to receive data on smartphone, analyze it (using graphs and Poincare plot function) and store raw data as .csv files. It is also used for wireless firmware upload. For desktop PC, our node.js monitor app is available on Linux/Windows/macOS systems. uECG is also compatible with most fitness apps (app sees it as generic heart sensor).
Multi-device support. Up to 8 uECGs can send data simultaneously to desktop app via USB receiver base - USB base RF protocol has discovery function for all devices in range, and low latency.
Firmware update. Firmware update. Wireless firmware update via Android app is now possible! This requires new bootloader though - so older (pre-September 2020) uECG units require bootloader update via STLink v2 to support this feature.
This adds PC connection capabilities. With it, you can stream to a lot of platforms. You don't need it if you will only stream to smartphone/Android.
These are legacy. You don’t really need it now, because we recently implemented a wireless firmware update. You only need it if you want to edit the bootloader or use your own. Or if you just need an STLink for programming something else. We use them for our nRF and STM32 based projects.
We would sell more, but it’s hard to fit more of them in the package, we honestly tried… also, we began running out of them too fast to restock on time. In any case, 10x free gel electrodes will always come with each uECG, so you can have up to 30 this way.
Note: if you need several uECGs, but you only need one receiver/one STLink/one set of additional electrodes per your order, then you should first add to cart one uECG with the necessary options, and then add more uECGs with no additional options, otherwise you will add the chosen options to every uECG and it may be not what you want.
You can use any gel electrodes, disposable or not. We use 45mm because larger diameter intersects with each other (and we don’t want to make uECG longer, at least for now). This doesn’t influence the signal. So standard 50mm (or even larger) will work too, if you’re okay with them sticking over each other a bit or cutting them slightly. The 45mm gel electrodes we order are solid gel type and are produced by a medical supplies manufacturer in China. We quite like the quality for the price. Except diameter, one other thing you may want to look for in electrodes is breathability. If they have textile-looking substrate (like ours in the pictures), they can be worn better during physical activities or just for longer time. Oh, and they stick better on hair, cause they are more flexible and thin. If, on the other hand, the electrodes you found have a solid, thick and soft white base, they may not be as breathable, but may work better for your specific case. You may want to experiment or read on that, but what really matters most is: 1) diameter 2) type of gel 3) substrate, which will ultimately determine how well they will stick on you and how noisy the signal will be.
Looks like that’s all the info we could think of. If you want to read more (and our project logs), our Hackaday project page is the best source. Also, feel free to message us in case you have a custom request!
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We recently learned that Tindie suddenly blocked sellers from Ukraine, so we can't sell on Tindie anymore. That's why the shipping options don't work.
So we reopened our shop on Etsy: Ultimate Robotics Etsy Shop
Also, make sure to join our Discord!
Product: (4.67)
Documentation: (4.00)
Shipping: (4.33)
Communication: (4.33)
Tanabodhi | Jan. 12, 2023
Joakim | Dec. 30, 2021
Giuseppe | Oct. 22, 2021
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