The technical specifications of various STorM32 boards are presented. For suppliers/vendors please refer to Where to buy STorM32 boards. For a detailed description of the various connectors on the boards see Pins and Connectors.
At present, the versions v1.1, v1.2, and v1.3 are in use (v0.17/v1.0 boards are deprecated). Their commonality is a resistive voltage regulator and the TC4452 motor drivers.
STorM32-BGC v1.3
STorM32-BGC board v1.3 with motor drivers in SOIC packageSTorM32-BGC board v1.2 with motor drivers in DFN packageSTorM32-BGC board v1.1 with motor drivers in SOIC package
MCU: STM32F103RC at 72 MHz
motor drivers: TC4452
voltage regulator: linear resistive
on-board Bluetooth (optional)
on-board 6DOF IMU (MPU6050)
IR led
Futaba S-Bus
Spektrum satellite
up to seven PWM/Sum-PPM inputs/outputs
joystick ports for all three axes
additional I2C port (I2C#2)
3 auxiliary ports
BUT port
supply voltage: 6 - 18 V or 2 - 4S
motor current: max. 1.5 A per motor Comment: This is not yet fully exploited and also depends on the package, with DFN packages motors with resistances of 12 Ohm or larger have been tested to be well handled at 4S, motors with 10 Ohm may be handled with care; for the latest summary see here (for details see also here, here), here and here).
board dimensions: 50 mm x 50 mm, 45 mm bolt to bolt, holes Ø3 mm
STorM32-BGC v1.2
Differences to the v1.3 board:
voltage regulator: smaller SOT223 package
only 2 auxiliary ports
STorM32-BGC v1.1
Differences to the v1.3 board:
no Futaba S-bus support
Spektrum satellite is supported, but no extra Spektrum connector on board
no extra USB voltage protection diode
voltage regulator: smaller SOT223 package
only 2 auxiliary ports
WARNING: The pins of connector I2C#2 are in reverse order to those of connector I2C, which implies also reversed voltage polarity. Pay attention to that before connecting a second IMU to the I2C#2 port.
Descendants
The STorM32 boards listed here are based on/derived from the layout of the "original" board designed by Martinez and OlliW, but modified in some ways.
GLB STorM32 v1.31
STorM32-BGC board v1.31 with DRV8313 motor drivers
MCU: STM32F103RC at 72 MHz
motor drivers: DRV8313
voltage regulator: switched step-down
on-board Bluetooth (optional)
on-board 6DOF IMU (MPU6050)
IR led
Futaba S-Bus
Spektrum satellite
up to seven PWM/Sum-PPM inputs/outputs
joystick ports for all three axes
additional I2C port (I2C#2)
3 auxiliary ports
BUT port
supply voltage: 9 - 25 V or 3 - 6S (according to the specs given by GLB, not yet confirmed in practice)
motor current: 1.5 A Comment: The board uses the same motor drivers as the BaseCam SimpleBGC 32-bit board, and the same spec can hence be expected, but the real capability has not yet been tested in practice.
board dimensions: 50 mm x 50 mm, 45 mm bolt to bolt, holes Ø3 mm
Witespy STorM32-BGC v1.1 Mosfet Version
Witespy STorM32-BGC v1.1 board with mosfet motor drivers
MCU: STM32F103RC at 72 MHz
motor drivers: mosfet
voltage regulator: linear
supply voltage: ? (no specs given by witespy)
motor current: ? (no specs given by wiitespy)
board dimensions: 50 mm x 50 mm, 45 mm bolt to bolt, holes Ø3 mm
STorM32 v1.32
STorM32-BGC board v1.32 with DRV8313 motor drivers
MCU: STM32F103RC at 72 MHz
motor drivers: DRV8313
voltage regulator: linear
on-board Bluetooth (optional)
on-board 6DOF IMU (MPU6050)
IR led
Futaba S-Bus
Spektrum satellite
up to seven PWM/Sum-PPM inputs/outputs
joystick ports for all three axes
additional I2C port (I2C#2)
3 auxiliary ports
BUT port
supply voltage: 9 - 18 V or 3 - 4S
motor current: 1.5 A Comment: The board uses the same motor drivers as the BaseCam SimpleBGC 32-bit board, and the same spec can hence be expected, but the real capability has not yet been tested in practice.
board dimensions: 50 mm x 50 mm, 45 mm bolt to bolt, holes Ø3 mm
Comment: This board cannot really be recommended; it's probably better to get a v1.31, which tends to be cheaper and especially offers a switching voltage regulator.
Third-Party Boards
The terms of usage of the STorM32 project allows, and in fact encourages, making own hardware, for both DIY and commercial purposes, without restrictions.
Micro STorM32 BGC
Micro STorM32-BGC board
MCU: STM32F103RC at 72 MHz
motor drivers: TC4452
voltage regulator: linear (LG33)
supply voltage: 7.4 - 16.8 V or 2 - 4S
motor current: 1.5 A (according to the given specs, whatever this means)
board dimensions: 40 mm x 22 mm, no mounting holes
no BOOT0 and RESET buttons
Comment: This board is suitable only for 2S (see [[1]]), with higher voltages it gets quite hot and may malfunction. Read also this: [[2]]. The board can only be flashed with a ST-Link adapter via SWD, it cannot be flashed via the "usual" procedure. Many pins/ports are not available. Overall, this board cannot be recommended, except for special applications.
GLB Mini STorM32 BGC
GLB Mini STorM32-BGC board with L6230 motor drivers
MCU: STM32F103RC at 72 MHz
motor drivers: L6230
voltage regulator: switched step-down
supply voltage: 7 - 25 V or 3 - 6S (according to the specs given by GLB, whatever this means)
motor current: 1.5 A (according to the specs given by GLB, whatever this means)
board dimensions: 42 mm x 30 mm, ? mm bolt to bolt, holes Ø? mm
AliExpress Mini STorM32 BGC
AliExpress Mini STorM32-BGC board
MCU: STM32F103RC at 72 MHz
motor drivers: DRV8313 (according to the specs given by AE, whatever this means)
voltage regulator: linear
supply voltage: 7.4 - 16.8 V or 2 - 4S (according to the specs given by AE, whatever this means)
motor current: 1.5 A (according to the specs given by AE, whatever this means)
board dimensions: 40 mm x 30 mm, 43 mm pitch ??, holes Ø2 mm
Comment:The info given on some pages is definitely wrong in some aspects.What we know so far (see also here and followup posts):
DRV8313 motor drivers do not allow 2S operation
it is not clear which motor drivers this board uses, or if it in fact has motor drivers at all
only the RC port is available
SBus is not supported
it can be doubted that a BT module can be installed on board
