Matek FCHUB-12S with 440A Current Sensor PDB User Guide
- June 10, 2024
- Matek
Table of Contents
MATEKSYS PDB FCHUB-12S V2
QUICK START GUIDE
LAYOUT
1.
1/21 VBat
1K:20K voltage divider
Output = 0~2.857V when VBat = 0~ 60V
INAV voltage scale: 2100
Betaflight voltage scale: 210
ArduPilot BATT_VOLT_MULT 21.0
12VSW & PIO
No output on “12VSW” pad by default if PINIO is not enabled
Any unused RX/TX/motor/PWM pad can be used for PINIO
e.g. connect PIO pad to “Rx3” of MATEK H743-SLIM
CLI resource to locate RX3 pin name
RX3 pad is D09
then
resource SERIAL_RX 3 none
resource PINIO 1 D09
set pinio_box = 42
save
pinio_box 40 user1, 41 user2, 42 user3, 43 user4
+ & – : LiPO & ESC power pads 8~60V (3~12S)
PDB: 4x70A cont. 4x110A burst.
5V: BEC 5V, 5A cont. 6A burst
12V: BEC 12V, 4A cont. 5A burst
3V3: LDO3.3V 500mA cont.
G: Ground
VBat: = Input voltage
Curr: current sensor signal, 440A range (0~3.3V)
INAV / BetaFlight current scale 75
ArduPilot BATT_AMP_PERVLT 133.3
TLM: for BLheli32 ESC telemetry,
5x TLM pads are all shorted together
S1/S2/S3/S4: ESC signal
2.
“V” pad on JST-SH connector
Go to modes tab and assign an AUX channel to the USER3 mode. Click SAVE.
Flip the switch and test
Wiring with MATEKSYS H743-SLIM
- VBAT
- ESC signal
- BLHeli32 ESC Telemetry
- Signal Ground
- Power Ground
BetaFlight
CLI resource to locate RSSI pin name
RSSI pin is C05
then
resource ADC_RSSI 1 none
resource ADC_BATT 1 C05
set vbat_scale = 210
save
INAV
CLI get adc to locate rssi_adc_channel
rssi_adc_channel is 3 by default
then
set rssi_adc_channel = 0
set vbat_adc_channel = 3
set vbat_scale = 2100
save
ArduPilot
BATT_VOLT_PIN 8
BATT_VOLT_MULT 21.0
Wiring with MATEKSYS F405-HDTE
- VBAT
- ESC signal
- BLHeli32 ESC Telemetry
- Signal Ground
- Power Ground
BetaFlight
resource ADC_RSSI 1 none
resource ADC_BATT 1 C00
set vbat_scale = 210
save
INAV
set rssi_adc_channel = 0
set vbat_adc_channel = 3
set vbat_scale = 2100
save
AUG. 2022 Rev 1.0
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