Trinamic TMC2300-IOT-REF User manual

Evaluation Board for Stepper Motors EVALUATION BOARD
TMC2300-IOT-REF Hardware Manual
Document Revision V1.1 •2020-SEP-30
The TMC2300-IOT-REF allows evaluation of the TMC2300-LA stepper motor driver for usage in battery-
powered IoT applications.
Features
•2-phase stepper motor up to 1.0A
coil current
•3.5V - 6V battery powered operation
range
•Li-Ion cell charger via USB-C
•ESP32-PICO-D4 processor with inte-
grated WiFi and BLE capabilites
•UART and USB-C for serial commu-
nication and programming
•StealthChop2™silent motor oper-
ation
•Stall detection StallGuard4™in Stealth-
Chop mode
•CoolStep™smart current control
Applications
•IoT & Handheld devices
•Battery operated equipment
•Printers, POS
•Miniature 3D Printers
•Toys
•Office and home automation
•CCTV, Security
•HVAC
•Mobile medical devices
Simplified Block Diagram
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at: www.trinamic.com
Read entire documentation.

TMC2300-IOT-REF Hardware Manual •Document Revision V1.1 •2020-SEP-30 2/6
Contents
1 Getting Started 3
2 Hardware Information 4
2.1 Onboard Connectors ............................................ 4
2.2 Onboard LEDs ................................................ 5
3 Revision History 6
3.1 Document Revision ............................................. 6
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com

TMC2300-IOT-REF Hardware Manual •Document Revision V1.1 •2020-SEP-30 3/6
1 Getting Started
You need
•Your TMC2300-IOT-REF.
•Own stepper motor with 4-pin JST-PH connec-
tor
•USB-C cable
•(opt.) USB-2-UART cable (3.3V TTL) to connect
to onboard UART (RX/TX) header
Precautions
•Do not mix up connections or short-circuit pins.
•Avoid bundling I/O wires with motor wires.
•Do not exceed the maximum rated supply volt-
age!
•Do not use other battery types than Li-Ion
with the board!
•Do only use Li-Ion batteries with integrated
protection!
•The Li-Ion cell should be properly charged.
•Do not connect or disconnect the motor while
powered!
•START WITH POWER SUPPLY OFF!
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com

TMC2300-IOT-REF Hardware Manual •Document Revision V1.1 •2020-SEP-30 4/6
2 Hardware Information
All design files for our evaluation boards are available for free. We offer the original ECAD files, Gerber
data, the BOM, and PDF copies. For the TMC2300-IOT-REF the CAD files are available in KiCAD format.
Please check schematics for Jumper settings and input/output connector description.
The files can be downloaded from the evaluation boards’ website directly at out homepage: TRINAMIC
Eval Kit homepage.
Note If files are missing on the website or something is wrong please send us a note.
2.1 Onboard Connectors
The following connectors are available on the TMC2300-IOT-REF.
•USB-C Connector - used for charging the battery as well as programming the microcontroller.
•2 Pin battery connector
•4 pin and 10 pin headers - all signals are labeled on the back of the board
•Stepper motor connector - a 4-pin JST PH series connector that connects the TMC2300-LA motor
driver outputs to the motor phases. Plug/unplug the motor only when the module is not pow-
ered!
Figure 1: Bottom side of the TMC2300-IOT-REF board
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com

TMC2300-IOT-REF Hardware Manual •Document Revision V1.1 •2020-SEP-30 5/6
2.2 Onboard LEDs
Figure 2: TMC2300-IOT-REF Onboard LEDs
•3V3 (green): This LED indicates the presence of the 3V3 power rail.
•DIAG (white): This LED is connected to the TMC2300 DIAG signal
•CHRG (yellow): This LED indicates that the battery is being charged.
•LINK (yellow): This LED is connected to the ESP32 microcontroller. It is usable by the application
code to signal an established connection.
•IO18 (green): This LED is connected to the ESP32 microcontroller. It is usable by the application
code to signal a status (e.g. a heartbeat).
•IO23 (red): This LED is connected to the ESP32 microcontroller. It is usable by the application code
to signal an error condition.
Note that you are free to use all LEDs connected to the ESP32 microcontroller for any other purpose in
your program.
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com

TMC2300-IOT-REF Hardware Manual •Document Revision V1.1 •2020-SEP-30 6/6
3 Revision History
3.1 Document Revision
Version Date Author Description
1.0 2020-09-11 LH Initial release.
1.1 2020-09-30 LH Updated block diagram
Table 1: Document Revision
©2020 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com