Project board selection

Projects General Guidance
1

I'm working on a wearable prototype and with all of the extra kit (IMU, flash memory, battery charging + a dev board), it's all becoming too large to test the prototype. That's not a long term problem as I'll eventually put it on a dedicated board once it's basically working and I've learned all of the problems. However, it is a problem for my second round of "actual" testing where I'll make a few of them and give them to friends to wear to gather data.

So, question - can anyone recommend a dev board that has somewhere north of 16Mb (2MB) flash, and an IMU? Preferably cheap because I need half a dozen prototypes! I know the Nano 33 BLE Sense and the Nano RP2040 Connect do, but they stuff everything in and cost a lot more! Anyway, neither has much onboard flash, I think.

2

I have used the Circuit Playground Bluefruit - Bluetooth Low Energy : ID 4333 : Adafruit Industries, Unique & fun DIY electronics and kits in a project. Barely touched all its peripherals: I used mainly the Bluetooth and the Neopixels, but there's a lot stuff packed into one board at a good price, including an IMU.

3

Give some thought to a 3.3V AVR chip with the pins splayed out flat or a surface mount feather type board and using microSD flash.

This is possible with any AVR DIP. You can spread out your design if you want.

4

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