![]() Then plug each board into a USB cable and press its Program / Boot button, or momentarily touch pads together if your custom PCB is made without a pushbutton. When you need to program a large number of boards with the same firmware, load the HEX file and turn on Teensy Loader’s “Auto” mode. Teensy Loader is a stand alone program which can be used without the rest of Teensyduino and the Arduino IDE. Like all Teensy models, MicroMod Teensy is supported by Teensy Loader. ![]() Then when you’re ready to sell a product, just buy the MicroMod board and plug it in. MicroMod form factor allows you to build your PCB using an inexpensive M.2 socket. Traditional Teensy requires through-hole header pins, which are simple but labor intensive to solder. In those cases, you would manufacture a simple 2-layer PCB with as few expensive parts as possible, then populate it with Teensy and other complex modules at the time you actually sell. But for low volume production, keeping up-front costs low and minimizing money tied up in inventory is often the best path to success. Obviously at high volume you would create a fully custom design from the ground up, and at medium volume a custom PCB using the Teensy 4 bootloader chip can make good sense. MicroMod can also be useful for low volume production. If any of Sparkfun’s growing collection of carrier boards is a close fit to your project’s needs, and you’d rather buy something than experience the joy and learning (but also frustration) of DIY building, MicroMod carrier boards may save you a lot of time. Sparkfun’s MicroMod form factor aims to give you an ecosystem of “just plug parts together” carrier boards and Qwiic I2C modules for a wide variety of projects. ![]() Almost all projects involve DIY building. While a few shields exist, like the Audio board, PJRC doesn’t have the resources to create a large ecosystem of shields & accessories. Teensy has traditionally focused on DIY electronics experimentation & building, particularly with solderless breadboards. Simply select it from Arduino’s Tools > Boards menu. Teensyduino 1.54 brings full support for MicroMod Teensy. MicroMod Teensy has hardware similar to Teensy 4.0 (600 MHz ARM Cortex-M7, 1MB RAM), but with larger 16MB flash memory. Sparkfun recently released MicroMod Teensy, which is a product of collaboration between PJRC and Sparkfun. ![]()
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