kallisto boardkallisto board


The Sensry Kallisto® embeds sensing, processing, energy management and radio communications in one monolithic size-optimized PCB module. The PCB module also provides core and an optional part of sensors and power management add-ons to enable a huge variety of IoT applications. Moreover, the Sensry Kallisto® ecosystem provides a hardware abstraction layer that allow developers to seamlessly interact with the module and its features in order to reduce the development cycle. This includes also OTA updates of the firmware SDK and the user software. Bluetooth® LE antenna and matching network onPCB; embedded low power sensors: 16-bit IMU and geomagnetic sensor; optional ambient sensors and wireless charge capability. Firmware and software development tools; Pre-programmed Bluetooth LE protocol stack; over-the-air firmware updates. Designed to be seamlessly integrated in different architectures, to allow for shorter development cycles and stimulate the creation of new IoT solutions.


  • PCB core module
    • Multiprotocol Bluetooth® Low Energy
    • Antenna-on-Module
    • Low power ARM microcontroller
    • Low power 3-axis accelerometer
    • Low power 3-axis gyroscope
    • Low power 3-axis geomagnetic sensor
    • Temperature
    • Humidity
    • Air Pressure
    • Battery fuel gauge
    • LiPo charger
  • PCB additional sensor & wireless charge module (optional):
    • VOC
    • Light Sensor
    • Wireless Qi Power Receiver
    • USB connector for power supply

Target applications

  • Wireless Wearable Technology
  • Wireless connected sensors for healthcare
  • Wireless connected sensors for healthcare, sport, fitness and industrial applications
  • USB connector for power supply
  • Wireless for IoT applications
  • Wireless connected objects
  • Wireless connected presence sensors
  • Wireless Home automation
  • Beacons

Technical Data

Package dimensionsHigh density PCB
28 x 11.5 (L x W)
Bluetooth Low Energy
(BLE) Antenna on-PCB
2.5dBi Gain (2.44GHz)
Supply Voltage2.2V…5.5V (compatible with Li-Ion, Li-SOCl, Li-MnO2 and 2 Alkaline batteries)
Internal Step-down converter for 1.8V
Up to 90% efficiency at 10μA
Digital InterfaceTWI and SWD (for Programming/Debugging)
MCU32bit ARM Cortex M4F – Nordic nRF52
512KB Flash memory, 64kB RAM
SWD debug interface
OTA (over the air) firmware update
3-axis Accelerometer
(Bosch BMI160)
Acc. ranges:
±2g, ± 4g, ±8g, ±16g
±2g: 16384 LSB/g
±4g: 8192 LSB/g
±8g: 4096 LSB/g
±16g: 2048 LSB/g
3-axis Gyroscope
(Bosch BMI160)
Gyro. ranges:
± 125°/s, ± 250°/s, ± 500°/s, ± 1000°/s, ± 2000°/s
Gyro. typical sensitivity:
±125 °/s: 262.4 LSB/°/s
±250 °/s: 131.2 LSB/°/s
±500 °/s: 65.6 LSB/°/s
±1000 °/s: 32.8 LSB/°/s
±2000 °/s: 16.4 LSB/°/s
3-axis Magnetometer
(Bosch BMM150)
EMF ranges:
± 1300 μT (x-, y-axis); ± 2500 μT (z-axis)
0.3 μT – 12 Bit
(Bosch BME280)
-40 … 85°C Accuracy:
0 … 64°C: ±1.0°C
-20 … 0°C: ±1.25°C
-30 … -20°C: ±1.5°C
Relative Humidity
(Bosch BME280)
0 … 100% rel. humidity
Response time:
Accuracy tolerance:
±3% rel. humidity
±1% rel. humidity
(Bosch BME280)
Pressure Range:
300 … 1100 hPa
RMS Noise:
0.2 Pa, equiv. to 1.7cm
Offset temp. coeff.:
±1.5 Pa/K
Overview (TI OPT3002)
Optical Spectrum:
300nm – 1000nm
Measurement levels:
1.2nW/cm² - 10mW/cm²
Air quality
(AMS CC811)
eTVOC (equivalent Volatile Organic Compound):
0 ppb … 32768 ppb

Board Layout

kallisto board layout
Core Module
Additional Sensors & Wireless Power
JTAG Debug Interface (removeable)
5Air Quality
kallisto board pinout

Assembly types

The Sensry Kallisto® platform can be delivered in different assemblies according functionality. The naming convention for assembly options are following the scheme:

SY – Version – Package – Communication – Charge – Sensors

Version, package and communication are fixed for this type:

SY – 010 – PCB – B – Charge – Sensors


WWireless Qi Charge
UUSB Connector Charge
xno Charge option


IMotion (ACC, GYRO)
MUSB Connector Charge
EEnvironment(Temp, Humidity, Pressure)
AAir Quality (TVOC, eqCO2)

Three different standard versions can be ordered as standard products:

SY-010-PCB-B-WU-IMEALBLE, Wireless & USB Charge, IMU, Mag., Environment, Air Quality, Light
SY-010-PCB-B-WU-IMELBLE, Wireless & USB Charge, IMU, Mag., Environment, Light
SY-010-PCB-B-W-IMBLE, Wireless Charge, IMU

Other combinations can be assembled on request