Hello everyone - uECG is back! It's a small batch for now, so get them while you can!

We have made some changes to the board that will hopefully make it more reliable and efficient - especially the IMU since we had some problems with them in the previous batch. We also produced this batch at JLCPCB as a way of optimizing the process and costs.

Changelog for v.4.52:

• Replaced AD8606 op amp with a pair of TLV271s;
• LDOs (3.3V for digital, 3V for analog side) were mixed in the previous version; strangely this didn’t affect functioning, but now this is fixed;
• Replaced BMI160 with LSM6DS3TR-C;
• Changed C6 capacitor from 2.2uF to 10uF for better low frequency performance;
• Replaced circuit protection (red LED) with diodes for more reliability;
• Changed charge resistor to 8.2K Ohm to fit the battery charging better;
• Replaced MCP71831 charger IC with TP4054;
• Added thermistor for measuring temperature;
• Changed RGB LED to different part number;

and last, but not least,

• Added Ultimate Robotics logo on the back of the PCB (!)

There will be some more updates in the nearest future, so stay tuned and stay safe!

P. S. And also, check out this cool animation our teammate Olha made specially for this batch's launch:

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