The main Tracker3 page covers information relevant to all Tracker3 variants. This page contains only information specific to the T3-Mini model.
T3-Mini / OTUSB-Mini
The Mini board is an embeddable tracker module measuring 1.72" by 1.12" (43mm by 28mm) and weighing 5.5 grams. The same board can be equipped with a Tracker3 MCU or an OpenTracker USB MCU, configurations referred to as the T3-Mini and OTUSB-Mini respectively.
The Mini features 13 general-purpose I/O pins (GP1 through GP12 and AUX) and four analog inputs. Connections are made through 34 contacts in two rows of 17, with a pitch of 0.1" and row spacing of 1" center to center. A mini USB type B connector provides a simple connection for a PC.
All software functions of the full-size versions are retained.
|A1-A4||Analog inputs 1-4 (max 4xVdd)|
|1W||Dallas 1-Wire data bus|
|AUX||Auxiliary I/O pin|
|GND / GND2||Ground|
|GP1-GP12||General purpose digital input/output pins|
|RST||Reset (active low)|
|B-RX||Serial port B input|
|B-TX||Serial port B output|
|A-RX||Serial port A input|
|A-TX||Serial port A output|
|GRN||Green LED output for external LED|
|RED||Red LED output for external LED|
|AOUT||Audio output (to radio)|
|AIN||Audio input (from radio)|
|PTT||Push-to-talk (open collector)|
|5V||Regulator output or Vdd input, 5v max, 2.8v min|
|VIN||Unregulated supply voltage, 6v to 28v|
GP6 also functions as the power relay output.
For safe mode, jumper CFG to 1WIRE at startup.