SAO Broach and STM32 playground

Name: SAO Broach and STM32 playground
SKU: 18017
Price: 10.00 USD
Availability: OutOfStock

A fun way to power your SAO - pin it to your shirt, wear it on a lanyard, or pin it to a wall

Designed by snurkle engineering in United States of America

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$10.00

Out of Stock

Sold out since Jul 07, 2021

Hardware artistry and blobs of solder

A fun way to power your SAO - pin it to your shirt, wear it on a lanyard, or pin it to a wall

Power your SAOs and more This little broach is available in 3 flavors - pick from the drop down above: 1) Power your SAO via USB 2) Power your SAO via USB or via a LiPo battery pack (not included) 3…

Power your SAOs and more

This little broach is available in 3 flavors - pick from the drop down above:

1) Power your SAO via USB
2) Power your SAO via USB or via a LiPo battery pack (not included)
3) Power your SAO via USB or via a LiPo battery pack, and use the broach as a UPDI programmer for my other SAOs or for driving I2C SAOs via a reprogrammable STM32

What's included

The broach itself is included, along with a pin stud that you can solder to the pad on the back to use this on a shirt or other material. The Space Kitty is shown for sizing only and is not included. Battery is not included either, but any LiPo cell with a JST connector will work. Finally, the cat is not included either - Spike was the basis for the artwork on the back of the broach.

Multiple uses

Solder the included pin on the back of the broach to pin it to a shirt or other fabric
Use the two holes at the top to attach to a lanyard or to affix it to a wall or cubicle partition

STM32

This STM32 is a SMT32F042G6U. It includes a USB DFU mode so you can program it over USB with no additional tools required. I've also included a Tag Connect TC2050 footprint on the back to JTAG the chip if you need to change the bootloader. Additionally, 8 IO pins are broken out in a 2x4 header so you can add custom functions or just play with the STM32 in other projects.

The STM32 also has a dedicated LED that you can use to blink messages or debug. Finally, there is a switch on the side tied to BOOT0 to allow you to force entry into the bootloader.

Example code will be available via github soon.

UPDI

With the STM32 option, you can use the device to program one of my other programmable SAOs via UPDI and a python script. See here for more details on the script.

LiPo charger

The LiPo circuit is designed for a standard single cell, 3.7v LiPo pack. The in-built charger is configured for a 1/2 amp charge rate, but this can be changed via a resistor if so desired. An LED is lit at the bottom while the battery is charging, and turns off when the battery is full. A battery is not included.