I really like the Artemis Nano, it does many things very well and seems to be a great all rounder. The speech recognition on board has really opened doors for me too. However, the ADC not having the full range (only reads 0-2V) and the - for my projects anyway - overly strong charge current of 500ma has meant we can't use it for a lot of our wearable and portable devices. If this was set to something like 100ma it would allow greater flexibility for use with small batteries which I would think is the focus of a nano board. Using this with a 500+ma battery seems like towing a trailer with a ferrari. The multiple ground through holes around the edge take up a lot of space and I would think are unlikely to be used to their max capacity so there is plenty of space that could be freed up.

If this had 3.3V ADC and lower charge current it would be a definite 5 stars for me - so if these things don't matter to you go for it.

Faster clock speed, less power overall, more timers, more interrupts, more memory, BLE, microphone, Arduino compatible, and nearly the same price—why not?

The smaller form factor works great on a bread board with headers.

This is an awesome little board--the Apollo3 module is crazy powerful, qwiic port means prototyping with this thing is a breeze, the lipo charger is more and more often becoming a must for little self-contained projects. The one place this falls short is BLE support compared to say the Arduino Nano 33 BLE, Photon Argon or one of the Ada's BLE feathers with nordic chipsets. The ability to easily define a GATT service and hook it up out of the box to stream sensor data or I/O events is non-trivial as of today. Fingers crossed Ambiq and SFE cook something up soon to get a bit easier to use and it will be the no brainer solution for quick prototypes and hopefully lead to the Artemis module becoming more common in 3rd party products!

I'm using this with great success for a mobile robot; wrote the code with the Arduino IDE. The board works very well, and a 48 MHz ARM Cortex with lots of RAM and flash is great on such a small board!

The board's tiny size and battery capability (I run mine on 3 AA cells) are a real winner for a mobile or portable application.

Many of the more hardware-specific Arduino libraries may not be ported to this platform yet (IRMP now works, but FastLEDs isn't ported yet), so be aware. Bluetooth under the Arduino IDE is still being worked on. The Ambiq SDK should be a good choice for more demanding applications (and especially Bluetooth); I'm told you can use its HAL functions from the Arduino IDE, but I haven't tried that out to any extent. Example code for the Apollo3 peripherals can be found, but that can be challenging.

This board is a great choice if you're comfortable working in the Arduino IDE; if you're proficient with command-line compilers, the Ambiq SDK should enable you to do spectacular things with it.

I plan to use this board for lots of projects going forward.

This is the first board I have bought from SparkFun and I am pleased with it's performance and size despite some minor issues.

It is the only board I own that runs the Max 30102 and Max30105 SpO2 sensors. It runs them well and it is snappy. The double row of through hole ground connectors on both sides of the board are a pleasant surprise I did not fully appreciate when I ordered. It facilitates prototyping on bread boards. Thoughtful details like this and the Qwiic connectors make projects easier to set up.

The board includes a microphone which I have not tried yet but seems like an interesting feature. The LiPo battery connector is solid and works well.

On the downside, the very first time I pressed the reset button the tiny metal frame around the button flew off. It is a tiny piece and getting it back on the button was tricky but solved with a pair of tweezers.

Note that this board does not use a microUSB like other brands do. Instead, it uses a USB C connector which is not included.

The third issue I've had with this board may be my fault. On Arduino 1.9 beta IDE, I keep getting error messages on my Windows 10 laptop saying the last USB device connected to the PC is not working correctly. This pops up several times a day whether or not I'm using the IDE. Not sure if this is a beta bug but it started with this board.

Overall I really like this little board. it is powerful, reasonably priced, and I'd buy it again.

I was pretty nervous about getting away from my standard Arduino nano I use in many small test tooling projects I do but since I needed the i2c buses [vs. stacking my nano with a Qwiic accessory board], the additional memory + the LiPo-battery capabilities, as the board already has all of the other features I need, I took the opportunity to give it a shot. 1st up, I ported multiple programs to the Artemis board I had for the Arduino Nano I was using, and once linked up with the Artemis board and uploaded, they ran perfectly, which answered the compatibility concern I had. At this point in time, I am looking forward to exploring the additional capabilities of the Artemis board and designing it into future projects. Thanks, SparkFun for what is looking like a great addition to future projects. my best, mike