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    Single Board Computers


    Single Board Computer

    We offer multiple single board computers to provide the lowest possible barrier to entering the world of TinyCLR OS. Most of these boards have WiFi and they all support the complete TinyCLR feature set. These boards are great for trying out TinyCLR OS, building prototypes, or incorporating into products.

    Note

    All SITCore single board computers use a USB-C connector for application deployment and debugging. While USB-C has many advantages, we've also noticed some flaws. Every USB-A to USB-C cable tested worked as expected. Testing USB-C to USB-C cables gave interesting and unexpected results. Most USB-C hubs also do not work when using USB-C to USB-C cables. If you are having problems deploying or debugging, try connecting the board directly to your computer with a USB-A to USB-C cable.

    Specifications and Peripherals

    FEZ Bit Fez Duino FEZ Feather Fez Portal FEZ Stick
    Core SC20100S SC20100S SC20100S SC20260N SC20100S
    External SDRAM X X X 32 MByte X
    External Flash X 16 MByte X 16 MByte X
    Display 1.8" 160x128 X X 4.3" 480x272 Cap. Touch X
    Click Connectors X X X 1 2
    WiFi Yes Yes Yes Yes X
    Micro SD Yes Yes X Yes X
    User LED Yes Yes Yes Yes Yes
    Buzzer Yes X X Yes X
    Accelerometer Yes X X X X
    User Buttons Yes Yes Yes Yes Yes
    USB Client Yes Yes Yes Yes Yes
    USB Host Connector X Yes X Yes Yes
    LiPo Charger X X Yes X X
    Power Barrel X Yes X X X
    GPIO 19 38 31 45 33
    SPI 1 2 2 3 2
    I2C 1 2 1 1 2
    UART 3 (0 w/ HS) 5 (2 w/ HS) 5 (1 w/ HS) 6 (1 w/ HS) 3 (1 w/ HS)
    CAN 1 1 1 2 1
    PWM 8 12 8 17 6
    ADC 8 11 6 10 3
    DAC 1 2 1 2 X
    SD/SDIP/MMC 1 1 1 1 1

    Note: As many pins share peripherals, not all peripherals will be available.


    Power Consumption

    The 'Running' power consumption totals include all other on board components, such as WiFi & Display.

    FEZ Portal

    480MHz 240MHz
    Running 375mA 345mA
    Idle 270mA 255mA
    Sleep 17mA 17mA
    Shutdown 9.7mA 9.7mA
    Tip

    Display backlight is included when Running and in Idle, but off in Sleep and Shutdown.

    Tip

    Enabling WiFi adds up to 300mA.

    FEZ Duino/Stick/Feather

    480MHz 240MHz
    Running 205mA 110mA
    Idle 170mA 97mA
    Sleep 6.5mA 6.5mA
    Shutdown 40uA 40uA
    Tip

    Enabling WiFi (when available) adds up to 300mA. Battery charging on FEZ Feather adds up to 500mA.

    FEZ Bit

    480MHz 240MHz
    Running 232mA 140mA
    Idle 190mA 127mA
    Sleep 8.5mA 8.5mA
    Shutdown 90uA 90uA
    Tip

    Display backlight is included when Running and in Idle, but off in Sleep and Shutdown.

    Tip

    Enabling WiFi adds up to 300mA.

    See the Power Management tutorial


    FEZ Bit

    FEZ Bit

    The FEZ Bit, while seemingly more of a "maker" board, provides a convenient way to easily use the multitude of inexpensive Micro:bit accessories that have flooded the market. As the number of Micro:bit accessories continues to grow, this board will be valued as a way to use these accessories to quickly assemble prototypes and test new product concepts.

    Caution

    The 3.3v regulator may run hot, especially when WiFi is in use. You can add 3.3V regulator externally to eliminate this heat issue, and this is needed if adding any external components that draw more than 10mA.

    FEZ Bit Schematic

    FEZ Bit 3D STEP File

    FEZ Bit Peripheral Pins

    User LED PE11
    Buzzer PB1
    Accelerometer I2C = I2C1
    SPI Display SPI = SPI4
    BL = PA15
    CS = PD10
    RS = PC4
    RST = PE15
    WiFi SPI = SPI3
    IRQ = PB12
    CS = PD15
    EN = PA8
    RST = PB13
    Buttons LDR = PE3
    APP = PB7
    UP = PE4
    DOWN = PA1
    A = PE5
    B = PE6
    Edge Connector P0 = PC6 (PC2 Analog)
    P1 = PC7 (PA3 Analog)
    P2 = PA0
    P3 = PB0
    P4 = PA4
    P5 = PD13
    P6 = PD12
    P7 = PD11
    P8 = PE8
    P9 = PC3
    P10 = PC0
    P11 = PD1
    P12 = PD0
    P13 = PA5
    P14 = PA6
    P15 = PA7
    P16 = PE7
    P19 = PB8
    P20 = PB9
    Note

    All boards with a barrel power jack accept a 5.5 x 2.1 mm power plug. The pin is positive, the sleeve is negative. While these boards accept a wide voltage range, they use linear voltage regulators that run hotter with higher input voltages. Generally we recommend an input voltage of 6 to 12 volts, but if your project draws a lot of current, use a lower voltage to keep the regulator cooler. A one amp power supply should provide enough current for most needs.


    FEZ Duino

    FEZ Duino

    The FEZ Duino provides female headers that make use of the popular Arduino pinout. Once again, we are trying to make it as easy and inexpensive as possible to build prototypes and try out new concepts by taking advantage of an existing accessory ecosystem.

    FEZ Duino Schematic

    FEZ Duino 3D STEP File

    FEZ Feather

    FEZ Duino Peripheral Pins

    User LED PE11
    WiFi SPI = SPI3
    IRQ = PB12
    CS = PD15
    EN = PA8
    RST = PB13
    Buttons LDR = PE3
    APP = PB7
    Warning

    FEZ Duino REV. A & B, The cap used on barrel jack is 6.3v but the input voltage can be as high as 12v. Use the barrel jack at your own risk or replace cap with a higher voltage. This only effects the power barrel jack. Everything else functions as expected if using USB for power.


    FEZ Feather

    FEZ Feather

    The Adafruit Feather form factor boards are made to be stackable and have built-in support for 3.7V LiPo batteries with a charging circuit. The FEZ Feather provides both through hole pads and castellated edges making it both breadboard friendly and easy to build into products.

    Caution

    Lithium Polymoer(Li-Po) batteries are significantly more volatile than other rechargable batteries. Make sure you have an understand of how to properly charge and use them before connecting to the FEZ Feather. Never attempt to charge a damaged or swollen battery. Never leave battery charging unattended. Improper use could result in fire.

    Warning

    Be very careful to ensure the correct polarity of LiPo batteries before connecting them to the FEZ Feather. Reverse polarity will damage the charging circuit, and not all batteries are wired correctly. GHI Electronics is not responsible for, and will not warranty, damage caused by incorrectly connected batteries.

    Make sure the battery polarity is correct as shown below (red wire to plus, black to minus):

    FEZ Feather Battery Connection

    Caution

    The 3.3v regulator may run hot, especially when WiFi is in use. You can add 3.3V regulator externally to eliminate this heat issue, and this is needed if adding any external components that draw more than 10mA.

    FEZ Feather Schematic

    FEZ Feather 3D STEP File

    FEZ Feather Peripheral Pins

    User LED PE11
    WiFi SPI = SPI3
    IRQ = PB12
    CS = PD15
    EN = PA8
    RST = PB13
    Buttons LDR = PE3
    APP = PB7

    FEZ Portal

    FEZ Portal

    Already one of our most popular SITCore single board computers, The FEZ Portal is a 4.3" 480x272 display with capacitive touch that is programmable in C#. As the display and controller are one unit, it's even easier to make a product with touch as you only have to mount a single board that's only slightly larger than the display. Display uses part# ER-TFT043-3 available at buydisplay.com

    FEZ Portal Schematic

    FEZ Portal 3D STEP File

    FEZ Portal Peripheral Pins

    User LED PB0
    Buzzer PB1
    Display BL = PA15
    Touch I2C = I2C1
    Touch IRQ = PG9
    WiFi SPI = SPI3
    IRQ = PF10
    CS = PA6
    EN = PA8
    RST = PC3
    Buttons LDR = PE3
    APP = PB7

    FEZ Stick

    FEZ Stick

    The FEZ Stick is simply the least expensive way to easily get started with TinyCLR OS. While providing an inexpensive way for the uninitiated to try TinyCLR OS, we've provided castellated edges as well as through hole pads to make it breadboard friendly and easy to embed into products. Also, there's actually space for two click modules, making this a very versatile board at a very affordable price!

    FEZ Stick Side Pads

    Note

    FEZ Stick REV. B pin PB13 MISO is mislabeled on the silk screen and should read PE13 MISO

    Caution

    The onboard 3.3v regulator is only capable of running external components of an additional 50mA. If more current is necessary, then add an additional external 3.3V regulator.

    FEZ Stick Schematic

    FEZ Stick 3D STEP File

    FEZ Stick Peripheral Pins

    User LED PE11
    Buttons LDR = PE3
    APP = PB7
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