DCS2.PDB default
Release notes
rev1.2
Manufacturability improvements
Added power supply connector (JST PASS 4-pin)
rev1.1
MCU PN changed to STM32F303CBT6
added JETSON_VDD_RANGE signal from B2B connector
5V_CRUCIAL output changed to 5.3VDC
rev1.0
Added fuses to redundant 5V connections
Added 3V3_MCU switch
18V_SOM changed to 15V_SOM
One 5V_PERIPH DC/DC removed, ideal diode omitted
Thermistor supply changed to 3V3_MCU_SW
The colour of the PCB changed to green
rev0.1
Design changes:
Added 5V_SE switch
Current sensor PN changed to ACS37002LMABTR-050B3
Added 5V_SE voltage sensing
Removed 12V_PAYLOAD
5V_PERIPH doubled with ideal diode
LEDs supply changed to 5V_PERIPH
Added diode to VDD switch
Added another pair of VDD solder pads
5V_SE_SW added to PWR B2B connector
CAN driver changed supply to 5V_SE_SW
Added CALIB pins to MCU
5V_SE_SW supplied through diode with 5V_CRUCIAL
PCB changes:
DCDCs potions on PCB changed for better cooling
MCU position changed
CAN connectors' position changed
Description
DCS2.PDB is responsible for distributing electrical power throughout the DroneCore Suite. It receives power from the main power source and delivers stable, regulated power to the Pilot Board, expansion boards, and other connected devices. The board is designed to ensure reliable and consistent power delivery across the entire drone system.
Altium sample project
Mechanical / environmental specifications
Weight
20g
Dimensions L×W×H (mm)
45.8 × 51 × 15
Temperature rating
-40°C / +85°C
Conformal coating
No
Dimensions
3D model
Power supply
WARNING - Do not exceed the maximum input voltage
Exceeding the maximum input voltage of 34 V may result in permanent damage to the device. Ensure that the input voltage remains within the specified limits at all times. Special care has to be taken if voltage transients and oscillations are present, as these may cause the maximum rating to be exceeded. This can occur in systems with high inductance, during switching events, or when using motor controllers with active braking. Appropriate suppression and protection measures must be implemented.
WARNING - Beware of excess heat
Heat is generated by all onboard voltage regulators during operation, with dissipation increasing at higher load current and total power consumption. Adequate thermal management, such as airflow or passive cooling, is recommended when operating the board at higher load conditions to ensure proper thermal performance and prevent overheating.
Recommended Input Voltage Range: 12-26.5V
Maximum Input Voltage: 34 V
Onboard supply rails
?V_PAYLOAD rail can be used for custom usage. Supply for that rail can be created on a custom PDB and can be used on a custom adapter/reduction board.
Peripherals
LED Channels
Supports WS2812 PWM communication protocol (WS2812 is used as reference, but there are more types of PWM LEDs with similar communication protocol. Compare datasheets for communication protocol compatibility )
Possible to connect up to 50 LEDs in the sum of all channels
FRONT L, FRONT R, BACK L and BACK R are set to support a maximum of 10 LEDs per channel
FRONT L, FRONT R, BACK L and BACK R channels can be controlled with predefined effects
LED effects can be controlled from the Jetson driver through I2C
LED control functions are implemented in the Python LED control example. Custom effects are controlled from Jetson. Python example can be found here: https://gitlab.com/airvolute_oss/dronecore.os/dronecore.samples/av-led-control-example
Connectors, controls and indicators
Top side
Connectors
VDD MAIN
Matching connector JST PAP-04V-S
Solder PADs are still available in a version without an assembled JST BM04B-PASS connector
Note:
Current rating for the connector is 3A/Pin. If supplying more current to the peripherals through this board, consider using solder PADs instead.
1
VDD
2
VDD
3
GND
4
GND
LED_FR_L
Matching connector JST GHR-03V-S
LED connectors shares same power rail internally limited to 1.8A
1
5V_LED
2
LED_FL
3
GND
LED_FR_R
Matching connector JST GHR-03V-S
LED connectors shares same power rail internally limited to 1.8A
1
5V_LED
2
LED_FR
3
GND
LED_BK_L
Matching connector JST GHR-03V-S
LED connectors shares same power rail internally limited to 1.8A
1
5V_LED
2
LED_RL
3
GND
LED_BK_R
Matching connector JST GHR-03V-S
LED connectors shares same power rail internally limited to 1.8A
1
5V_LED
2
LED_RR
3
GND
EXT. BTN
Matching connector JST GHR-03V-S
3V3 power supply rail is internally limited to 0.2A
1
3V3
2
BUTTON
3
GND
Bottom side
Connectors
CAN1
Matching connector JST GHR-04V-S
CAN1, CAN2 shares the same power rail internally limited to 1A
Power rail is configurable by solder bridge near respective connector
SB open = no power , SB closed = 5V
1
GND
2
CAN1_L
3
CAN1_H
4
5V_PERIPH
CAN2
Matching connector JST GHR-04V-S
CAN1, CAN2 shares the same power rail internally limited to 1A
Power rail is configurable by solder bridge near respective connector
SB open = no power , SB closed = 5V
1
GND
2
CAN2_L
3
CAN2_H
4
5V_PERIPH
Indicators
Controls
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