What components to choose for the device?

Question

Programming

Task: to create a device, no larger than 2×1 cm, which can collect information from sensors (accelerometer, gyroscope, etc.), process them minimally and send them via WIFI/Bluetooth.
What components (MK, sensors, WIFI, BT) would you recommend, taking into account the minimum free space?
Thanks in advance.

Answer 1

If you take the ESP8266 chip, then I think you can meet it. Not the ESP8266 board, but the chip itself, it has a size of 10 * 11 mm. The sensors themselves - the gyroscope and the accelerometer are mostly small. You can also set the temperature and humidity :).
ESP8266 inside already has a full-fledged MK with an implemented Wi-Fi stack. The network is full of examples of the implementation of full-fledged work on it without an external MC.
And as a battery, take a miniature li-on to fit. Actually, it is worth starting from its size. Plus a microusb connector and a charger for li-on, for example MCP73831T.
And why such a device, if not a secret?

Answer 2

you can’t find ready-made ones in such a configuration, you need to choose a microprocessor for yourself, select suitable components for it, but given the need for wifi / bluetooth in 2 * 1, you can only get it if there are over 5+
of the “small” BT modules along the 3 axis:
www .bluesoleil.com/products/ H0002201209150002.html
www.alphamicro.net/franchises/laird/bl600.aspx
www.alphamicro.net/franchises/laird/bt900.aspx
wireless module and nothing else the thickness of your device will be about 1 cm
from small sensors found this
www.eetimes.com/document.asp?doc_id=1326096

Answer 3

For a base, try ST iNEMO-M1 www.st.com/web/catalog/sense_power/FM89/SC1448/PF253162 or a demo board based on it www.st.com/web/catalog/tools/FM116/SC1116/PF255175 . The communication module for them must be searched separately.

Answer 4

you forgot to specify the thickness, since you can make a very high sandwich, since all the necessary components suit you in terms of area