Unexpected motor stop

[bluuu]

Answers:

1. Could you send me latest hex ? I can't compile myself. (actualy I've got 1.4.1)
2. 4s battery
3. Actualy default settings on escs (current limit 25A, advance 15 but other setting I postet earlier).
4. About my esc32:
Soldered 2x 330uF/25V (low esr) - because i've got wires 27cm long (twisted)
2x heatsink



Place of esc:

Place of esc

Motor and esc:

Motor and esc

Wiring:

Wiring

5. ESC and motors isn't hot.

6. Parameters:
(I can't download 1.1.1 version, it stall at 99,9%)

Parameters from 1.0.5:
# Onboard parameters for system MAV 086
#
# MAV ID COMPONENT ID PARAM NAME VALUE (FLOAT)
86 190 CONFIG_VERSION 102 9
86 190 CTRL_DEAD_BAND 20 9
86 190 CTRL_FACT_PITC 0.0500000007451 9
86 190 CTRL_FACT_ROLL 0.0500000007451 9
86 190 CTRL_FACT_RUDD 0.000399999989895 9
86 190 CTRL_FACT_THRO 0.699999988079 9
86 190 CTRL_MAX 300 9
86 190 CTRL_MIN_THROT 20 9
86 190 CTRL_NAV_YAW_RT 180 9
86 190 CTRL_PID_TYPE 0 9
86 190 CTRL_TLT_ANG_D 1200 9
86 190 CTRL_TLT_ANG_DM 150 9
86 190 CTRL_TLT_ANG_F 0.25 9
86 190 CTRL_TLT_ANG_I 0.000500000023749 9
86 190 CTRL_TLT_ANG_IM 75 9
86 190 CTRL_TLT_ANG_OM 250 9
86 190 CTRL_TLT_ANG_P 15 9
86 190 CTRL_TLT_ANG_PM 150 9
86 190 CTRL_TLT_RTE_D 2250 9
86 190 CTRL_TLT_RTE_DM 999 9
86 190 CTRL_TLT_RTE_F 0.25 9
86 190 CTRL_TLT_RTE_I 0 9
86 190 CTRL_TLT_RTE_IM 999 9
86 190 CTRL_TLT_RTE_OM 250 9
86 190 CTRL_TLT_RTE_P 0 9
86 190 CTRL_TLT_RTE_PM 999 9
86 190 CTRL_YAW_ANG_D 0 9
86 190 CTRL_YAW_ANG_DM 0 9
86 190 CTRL_YAW_ANG_F 0 9
86 190 CTRL_YAW_ANG_I 1.99999994948e-05 9
86 190 CTRL_YAW_ANG_IM 0.0399999991059 9
86 190 CTRL_YAW_ANG_OM 1.25 9
86 190 CTRL_YAW_ANG_P 0.0500000007451 9
86 190 CTRL_YAW_ANG_PM 1.25 9
86 190 CTRL_YAW_RTE_D 50 9
86 190 CTRL_YAW_RTE_DM 80 9
86 190 CTRL_YAW_RTE_F 0.25 9
86 190 CTRL_YAW_RTE_I 0.15000000596 9
86 190 CTRL_YAW_RTE_IM 80 9
86 190 CTRL_YAW_RTE_OM 180 9
86 190 CTRL_YAW_RTE_P 300 9
86 190 CTRL_YAW_RTE_PM 80 9
86 190 DOWNLINK_BAUD 115200 9
86 190 GMBL_NTRL_PITCH 1575 9
86 190 GMBL_NTRL_ROLL 1442 9
86 190 GMBL_PITCH_PORT 0 9
86 190 GMBL_PWM_MAX_PIT 2250 9
86 190 GMBL_PWM_MAX_ROL 2250 9
86 190 GMBL_PWM_MIN_PIT 750 9
86 190 GMBL_PWM_MIN_ROL 750 9
86 190 GMBL_ROLL_PORT 0 9
86 190 GMBL_SCAL_PITCH 0.0109890112653 9
86 190 GMBL_SCAL_ROLL 0.0142857143655 9
86 190 GMBL_SLEW_RATE 0.00499999988824 9
86 190 GPS_BAUD_RATE 230400 9
86 190 GPS_RATE 200 9
86 190 IMU_ACC_ALGN_XY 0.00649600848556 9
86 190 IMU_ACC_ALGN_XZ -0.0021370309405 9
86 190 IMU_ACC_ALGN_YX 0.00938798952848 9
86 190 IMU_ACC_ALGN_YZ 0.00128460128326 9
86 190 IMU_ACC_ALGN_ZX 0.00223794672638 9
86 190 IMU_ACC_ALGN_ZY 0.00150828692131 9
86 190 IMU_ACC_BIAS1_X 3.80432720704e-05 9
86 190 IMU_ACC_BIAS1_Y -0.000128967294586 9
86 190 IMU_ACC_BIAS1_Z 8.98373764358e-05 9
86 190 IMU_ACC_BIAS2_X 2.05507987516e-07 9
86 190 IMU_ACC_BIAS2_Y 8.29401017199e-07 9
86 190 IMU_ACC_BIAS2_Z 4.44203578809e-06 9
86 190 IMU_ACC_BIAS3_X 6.32976409065e-08 9
86 190 IMU_ACC_BIAS3_Y 8.71661498536e-09 9
86 190 IMU_ACC_BIAS3_Z 8.78313670682e-08 9
86 190 IMU_ACC_BIAS_X -1.64584505558 9
86 190 IMU_ACC_BIAS_Y -1.63821041584 9
86 190 IMU_ACC_BIAS_Z -1.66729295254 9
86 190 IMU_ACC_SCAL1_X -5.8797326119e-07 9
86 190 IMU_ACC_SCAL1_Y 5.51251559955e-06 9
86 190 IMU_ACC_SCAL1_Z -5.61201250093e-06 9
86 190 IMU_ACC_SCAL2_X 6.93493973358e-08 9
86 190 IMU_ACC_SCAL2_Y -1.53978234607e-07 9
86 190 IMU_ACC_SCAL2_Z -1.18705706598e-07 9
86 190 IMU_ACC_SCAL3_X -1.60724974996e-10 9
86 190 IMU_ACC_SCAL3_Y -7.77688669018e-09 9
86 190 IMU_ACC_SCAL3_Z 4.54663062754e-09 9
86 190 IMU_ACC_SCAL_X 0.0197975803167 9
86 190 IMU_ACC_SCAL_Y 0.0198690313846 9
86 190 IMU_ACC_SCAL_Z 0.0191629230976 9
86 190 IMU_GYO_ALGN_XY -0.00493615726009 9
86 190 IMU_GYO_ALGN_XZ -0.0064029446803 9
86 190 IMU_GYO_ALGN_YX 0.012142480351 9
86 190 IMU_GYO_ALGN_YZ -0.0066048251465 9
86 190 IMU_GYO_ALGN_ZX 0.0156417191029 9
86 190 IMU_GYO_ALGN_ZY -0.00623371824622 9
86 190 IMU_GYO_BIAS1_X -0.000115518792882 9
86 190 IMU_GYO_BIAS1_Y 7.54627581045e-06 9
86 190 IMU_GYO_BIAS1_Z 4.28912499046e-05 9
86 190 IMU_GYO_BIAS2_X 7.0071855589e-06 9
86 190 IMU_GYO_BIAS2_Y 1.00939942058e-05 9
86 190 IMU_GYO_BIAS2_Z 8.09399978152e-07 9
86 190 IMU_GYO_BIAS3_X 6.92144581649e-08 9
86 190 IMU_GYO_BIAS3_Y 5.75823655424e-08 9
86 190 IMU_GYO_BIAS3_Z -3.05375036369e-09 9
86 190 IMU_GYO_BIAS_X -1.35411572456 9
86 190 IMU_GYO_BIAS_Y -1.3551633358 9
86 190 IMU_GYO_BIAS_Z -1.32019019127 9
86 190 IMU_GYO_SCAL_X 0.115720123053 9
86 190 IMU_GYO_SCAL_Y 0.115856461227 9
86 190 IMU_GYO_SCAL_Z 0.113444224 9
86 190 IMU_MAG_ALGN_XY -0.0310158152133 9
86 190 IMU_MAG_ALGN_XZ -0.0159242749214 9
86 190 IMU_MAG_ALGN_YX -0.0136392218992 9
86 190 IMU_MAG_ALGN_YZ 0.0147650819272 9
86 190 IMU_MAG_ALGN_ZX -0.0579480864108 9
86 190 IMU_MAG_ALGN_ZY -0.00942953210324 9
86 190 IMU_MAG_BIAS1_X -0.000222126182052 9
86 190 IMU_MAG_BIAS1_Y 0.000113740155939 9
86 190 IMU_MAG_BIAS1_Z 4.19186508225e-05 9
86 190 IMU_MAG_BIAS2_X 6.0642526023e-07 9
86 190 IMU_MAG_BIAS2_Y 4.85996281441e-07 9
86 190 IMU_MAG_BIAS2_Z -6.39462086838e-07 9
86 190 IMU_MAG_BIAS3_X 2.92231181476e-08 9
86 190 IMU_MAG_BIAS3_Y 2.85083068263e-08 9
86 190 IMU_MAG_BIAS3_Z -1.77578378668e-08 9
86 190 IMU_MAG_BIAS_X 0.0569498836994 9
86 190 IMU_MAG_BIAS_Y -0.0287864599377 9
86 190 IMU_MAG_BIAS_Z -0.0190900992602 9
86 190 IMU_MAG_DECL 0 9
86 190 IMU_MAG_INCL -66.3471984863 9
86 190 IMU_MAG_SCAL1_X -0.00067802920239 9
86 190 IMU_MAG_SCAL1_Y -0.000754037522711 9
86 190 IMU_MAG_SCAL1_Z -0.000618107034825 9
86 190 IMU_MAG_SCAL2_X 8.21967205411e-07 9
86 190 IMU_MAG_SCAL2_Y 1.02497438093e-06 9
86 190 IMU_MAG_SCAL2_Z 2.20419815378e-06 9
86 190 IMU_MAG_SCAL3_X 1.17877863026e-09 9
86 190 IMU_MAG_SCAL3_Y -6.32462970884e-09 9
86 190 IMU_MAG_SCAL3_Z -6.29579000044e-10 9
86 190 IMU_MAG_SCAL_X 0.199624478817 9
86 190 IMU_MAG_SCAL_Y 0.209019243717 9
86 190 IMU_MAG_SCAL_Z 0.192366451025 9
86 190 IMU_PRESS_SENSE 0 9
86 190 IMU_ROT 0 9
86 190 L1_ATT_AM1 -10 9
86 190 L1_ATT_AM1_KNOB 0 9
86 190 L1_ATT_AM2 -25 9
86 190 L1_ATT_AM2_KNOB 0 9
86 190 L1_ATT_J_PITCH 0.0126999998465 9
86 190 L1_ATT_J_ROLL 0.0126999998465 9
86 190 L1_ATT_J_YAW 0.024661000818 9
86 190 L1_ATT_K1_KNOB 0 9
86 190 L1_ATT_L1_ASP -10 9
86 190 L1_ATT_L1_K1 18.6000003815 9
86 190 L1_ATT_MAX_OUT 4 9
86 190 L1_ATT_MM_P01 0 9
86 190 L1_ATT_MM_P02 0 9
86 190 L1_ATT_MM_P03 0 9
86 190 L1_ATT_MM_P04 0 9
86 190 L1_ATT_MM_P05 0 9
86 190 L1_ATT_MM_P06 0 9
86 190 L1_ATT_MM_P07 0 9
86 190 L1_ATT_MM_P08 0 9
86 190 L1_ATT_MM_P09 0 9
86 190 L1_ATT_MM_P10 0 9
86 190 L1_ATT_MM_P11 0 9
86 190 L1_ATT_MM_P12 0 9
86 190 L1_ATT_MM_P13 0 9
86 190 L1_ATT_MM_P14 0 9
86 190 L1_ATT_MM_R01 0 9
86 190 L1_ATT_MM_R02 0 9
86 190 L1_ATT_MM_R03 0 9
86 190 L1_ATT_MM_R04 0 9
86 190 L1_ATT_MM_R05 0 9
86 190 L1_ATT_MM_R06 0 9
86 190 L1_ATT_MM_R07 0 9
86 190 L1_ATT_MM_R08 0 9
86 190 L1_ATT_MM_R09 0 9
86 190 L1_ATT_MM_R10 0 9
86 190 L1_ATT_MM_R11 0 9
86 190 L1_ATT_MM_R12 0 9
86 190 L1_ATT_MM_R13 0 9
86 190 L1_ATT_MM_R14 0 9
86 190 L1_ATT_MM_Y01 0 9
86 190 L1_ATT_MM_Y02 0 9
86 190 L1_ATT_MM_Y03 0 9
86 190 L1_ATT_MM_Y04 0 9
86 190 L1_ATT_MM_Y05 0 9
86 190 L1_ATT_MM_Y06 0 9
86 190 L1_ATT_MM_Y07 0 9
86 190 L1_ATT_MM_Y08 0 9
86 190 L1_ATT_MM_Y09 0 9
86 190 L1_ATT_MM_Y10 0 9
86 190 L1_ATT_MM_Y11 0 9
86 190 L1_ATT_MM_Y12 0 9
86 190 L1_ATT_MM_Y13 0 9
86 190 L1_ATT_MM_Y14 0 9
86 190 L1_ATT_M_TLT_RT 1 9
86 190 L1_ATT_M_YAW_RT 1 9
86 190 L1_ATT_PROP_K1 14.6199998856 9
86 190 L1_ATT_PT_KNOB 0 9
86 190 L1_ATT_PWM_HI 1950 9
86 190 L1_ATT_PWM_LO 1000 9
86 190 L1_ATT_PWM_SCALE 6500 9
86 190 L1_ATT_QUAT_TAU 0.0500000007451 9
86 190 L1_ATT_T2R_A1 0 9
86 190 L1_ATT_T2R_A2 0 9
86 190 MOT_EXP_FACT 0 9
86 190 MOT_EXP_MAX 0 9
86 190 MOT_EXP_MIN 0 9
86 190 MOT_FRAME 0 9
86 190 MOT_HOV_THROT 500 9
86 190 MOT_MAX 1950 9
86 190 MOT_MIN 975 9
86 190 MOT_PWRD_01_P 50 9
86 190 MOT_PWRD_01_R 50 9
86 190 MOT_PWRD_01_T 100 9
86 190 MOT_PWRD_01_Y -100 9
86 190 MOT_PWRD_02_P 50 9
86 190 MOT_PWRD_02_R 0 9
86 190 MOT_PWRD_02_T 100 9
86 190 MOT_PWRD_02_Y 100 9
86 190 MOT_PWRD_03_P 50 9
86 190 MOT_PWRD_03_R -50 9
86 190 MOT_PWRD_03_T 100 9
86 190 MOT_PWRD_03_Y -100 9
86 190 MOT_PWRD_04_P -50 9
86 190 MOT_PWRD_04_R 50 9
86 190 MOT_PWRD_04_T 100 9
86 190 MOT_PWRD_04_Y 100 9
86 190 MOT_PWRD_05_P -50 9
86 190 MOT_PWRD_05_R 0 9
86 190 MOT_PWRD_05_T 100 9
86 190 MOT_PWRD_05_Y -100 9
86 190 MOT_PWRD_06_P -50 9
86 190 MOT_PWRD_06_R -50 9
86 190 MOT_PWRD_06_T 100 9
86 190 MOT_PWRD_06_Y 100 9
86 190 MOT_PWRD_07_P 0 9
86 190 MOT_PWRD_07_R 0 9
86 190 MOT_PWRD_07_T 0 9
86 190 MOT_PWRD_07_Y 0 9
86 190 MOT_PWRD_08_P 0 9
86 190 MOT_PWRD_08_R 0 9
86 190 MOT_PWRD_08_T 0 9
86 190 MOT_PWRD_08_Y 0 9
86 190 MOT_PWRD_09_P 0 9
86 190 MOT_PWRD_09_R 0 9
86 190 MOT_PWRD_09_T 0 9
86 190 MOT_PWRD_09_Y 0 9
86 190 MOT_PWRD_10_P 0 9
86 190 MOT_PWRD_10_R 0 9
86 190 MOT_PWRD_10_T 0 9
86 190 MOT_PWRD_10_Y 0 9
86 190 MOT_PWRD_11_P 0 9
86 190 MOT_PWRD_11_R 0 9
86 190 MOT_PWRD_11_T 0 9
86 190 MOT_PWRD_11_Y 0 9
86 190 MOT_PWRD_12_P 0 9
86 190 MOT_PWRD_12_R 0 9
86 190 MOT_PWRD_12_T 0 9
86 190 MOT_PWRD_12_Y 0 9
86 190 MOT_PWRD_13_P 0 9
86 190 MOT_PWRD_13_R 0 9
86 190 MOT_PWRD_13_T 0 9
86 190 MOT_PWRD_13_Y 0 9
86 190 MOT_PWRD_14_P 0 9
86 190 MOT_PWRD_14_R 0 9
86 190 MOT_PWRD_14_T 0 9
86 190 MOT_PWRD_14_Y 0 9
86 190 MOT_START 1125 9
86 190 NAV_ALT_POS_I 0 9
86 190 NAV_ALT_POS_IM 0 9
86 190 NAV_ALT_POS_OM 2.5 9
86 190 NAV_ALT_POS_P 0.20000000298 9
86 190 NAV_ALT_POS_PM 2.5 9
86 190 NAV_ATL_SPED_I 2.84999990463 9
86 190 NAV_ATL_SPED_IM 700 9
86 190 NAV_ATL_SPED_OM 700 9
86 190 NAV_ATL_SPED_P 200 9
86 190 NAV_ATL_SPED_PM 150 9
86 190 NAV_DIST_I 0 9
86 190 NAV_DIST_IM 0 9
86 190 NAV_DIST_OM 999 9
86 190 NAV_DIST_P 0.5 9
86 190 NAV_DIST_PM 999 9
86 190 NAV_MAX_DECENT 1.5 9
86 190 NAV_MAX_SPEED 5 9
86 190 NAV_SPEED_I 0.00499999988824 9
86 190 NAV_SPEED_IM 20 9
86 190 NAV_SPEED_OM 30 9
86 190 NAV_SPEED_P 7 9
86 190 NAV_SPEED_PM 20 9
86 190 PPM_CHAN_MID 1512 9
86 190 PPM_SCALER 3 9
86 190 PPM_THROT_LOW 1090 9
86 190 RADIO_AUX2_CH 6 9
86 190 RADIO_AUX3_CH 7 9
86 190 RADIO_AUX4_CH 8 9
86 190 RADIO_AUX5_CH 9 9
86 190 RADIO_AUX6_CH 10 9
86 190 RADIO_AUX7_CH 11 9
86 190 RADIO_FLAP_CH 5 9
86 190 RADIO_GEAR_CH 4 9
86 190 RADIO_PITC_CH 1 9
86 190 RADIO_ROLL_CH 0 9
86 190 RADIO_RUDD_CH 3 9
86 190 RADIO_THRO_CH 2 9
86 190 RADIO_TYPE 3 9
86 190 SPVR_BAT_CRV1 9.21014404297 9
86 190 SPVR_BAT_CRV2 14.8179597855 9
86 190 SPVR_BAT_CRV3 -58.9025497437 9
86 190 SPVR_BAT_CRV4 116.608200073 9
86 190 SPVR_BAT_CRV5 -107.419296265 9
86 190 SPVR_BAT_CRV6 37.7908210754 9
86 190 SPVR_LOW_BAT1 3.5 9
86 190 SPVR_LOW_BAT2 3.29999995232 9
86 190 TELEMETRY_RATE 20 9
86 190 UKF_ACC_BIAS_Q 0.000937220000196 9
86 190 UKF_ACC_BIAS_V 2.75350004131e-07 9
86 190 UKF_ACC_N 9.54679999268e-05 9
86 190 UKF_ALT_N 0.170770004392 9
86 190 UKF_ALT_POS_V 5.38210009893e-09 9
86 190 UKF_ALT_VEL_V 2.81029997495e-07 9
86 190 UKF_DIST_N 0.0187049992383 9
86 190 UKF_GPS_ALT_M_N 3.85349994758e-05 9
86 190 UKF_GPS_ALT_N 7.65579970903e-05 9
86 190 UKF_GPS_POS_M_N 4.74129992654e-05 9
86 190 UKF_GPS_POS_N 1.76199991984e-05 9
86 190 UKF_GPS_VD_M_N 0.0158409997821 9
86 190 UKF_GPS_VD_N 3.78200006485 9
86 190 UKF_GPS_VEL_M_N 0.0123359998688 9
86 190 UKF_GPS_VEL_N 0.0462559983134 9
86 190 UKF_GYO_BIAS_Q 0.0468720011413 9
86 190 UKF_GYO_BIAS_V 8.27380006285e-07 9
86 190 UKF_MAG_N 0.382259994745 9
86 190 UKF_POS_ALT_Q 4557.60009766 9
86 190 UKF_POS_DELAY 2057.39990234 9
86 190 UKF_POS_Q 6049 9
86 190 UKF_POS_V 6.45050022285e-08 9
86 190 UKF_PRES_ALT_Q 65.1719970703 9
86 190 UKF_PRES_ALT_V 0.000102040001366 9
86 190 UKF_QUAT_Q 0.000730209983885 9
86 190 UKF_RATE_V 6.05679997534e-05 9
86 190 UKF_VEL_ALT_Q 0.141489997506 9
86 190 UKF_VEL_DELAY -103730 9
86 190 UKF_VEL_Q 0.0760200023651 9
86 190 UKF_VEL_V 1.09799998427e-07 9
86 190 VN100_MAG_ALGN_X 0 9
86 190 VN100_MAG_ALGN_Y 0 9
86 190 VN100_MAG_ALGN_Z 0 9
86 190 VN100_MAG_BIAS_X 0 9
86 190 VN100_MAG_BIAS_Y 0 9
86 190 VN100_MAG_BIAS_Z 0 9
86 190 VN100_MAG_SCAL_X 1 9
86 190 VN100_MAG_SCAL_Y 1 9
86 190 VN100_MAG_SCAL_Z 1 9

[JussiH]

Here is the latest version of the ESC32 FW, R17

ESC32.7z

(37.94 KiB) Downloaded 657 times

[bluuu]

Ok, I try it.

[JussiH]

I looked at the cap picture: Do you have the capacitors in parallel?

Also, looking at the specs for MT2814-10, I dont think you should calibrate them to more than 21-22A. If the current limiter is too high, it will allow too much current to the motor, and this can cause unexpected motor stops like it happens on MT3506 - that one works perfectly when calibrated to 15A on 4S (which is the 200W its rated for)

MT2814-10 is rated 350W (though I seriously doubt it will deliver that), so I would suggest to calibrate it to 21A max on 4S (21*16.4 = 344W)

Tiger tests their motors with their own ESC´s, which are basically OEM ESC´s - they have throttle smoothing like stock Hobbywing and Turnigy ESC´s and that will cover up its behavior on a fast response ESC. ESC32 tries to deliver the maximum as fast as possible, and on some motors this causes a stop if the current limit is too high.

I am pretty sure that if you calibrate it to within the factory rating, the motor stop will not happen....

[bluuu]

thx for reply and hints

Arrange tests and write about it.

EDIT:
Yes, caps are parralel

[bluuu]

Ok.
FW flashed.

I done current calibration at current limiter set to 21A
Results:
CL1: +3.07617e-01
CL2: +1.06499e-03
CL3: +1.48613e-03
CL4: +2.04680e-05
CL5: +8.05044e-01

Can you deduce something on that ?

More question:
1. What will be first: current calibration or rpmToVoltage ?
2. Can I set RPM mode on esc after calibration ?
3. What are the rules of PWM RPM Scale ?
4. Then can I change "advance" ?
5. What is a "start step accel" ? and "Start step num" ?

sorry for the amount of questions but there is no such information in the wiki and I would like to understand

[bluuu]

update:

1. test:
Full calibration - rpmtovoltage, next current limiter, calibration current set to 21A , advance set to 10 - no change

2. test:
Full calibration - rpmtovoltage, next current limiter, calibration current set to 21A , advance set to 30 - no change

3. test:
Full calibration - rpmtovoltage, next current limiter, calibration current set to 22A , advance set to 17 - no change (maybe a little better motor "sound")

4. test:
Full calibration - rpmtovoltage, next current limiter, calibration current set to 20A , advance set to 20 - no change

5. test:
Without calibration - only default settings, current limiter set to 20A , advance set to 10 - no change

I don't now what can i do :/ Help

[JussiH]

[bluuu]

thx Jussi

Now I know what can I do.
I tell you when when a problem will be solved.

I will try to put charts.

[afernan]

bluu:

very good research shown. At that moment nothing said about 10nF caps or signal cable shielding.

I´m now trying the caps without success for the moment. Shielding is the next, but looking to the ESC32 code failure (DIsarm code=3, PWM_MAX_PERIOD) I don´t think this will be solved with shielding

Angel