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| author | Sadeep Madurange <sadeep@asciimx.com> | 2025-06-19 11:35:22 +0800 |
|---|---|---|
| committer | Sadeep Madurange <sadeep@asciimx.com> | 2025-06-19 13:00:23 +0800 |
| commit | db9b2dacb951c2685e9f43801278f10f06e37056 (patch) | |
| tree | e577c7fe2bc897f72c5947fef8ea3398f336d678 | |
| parent | d757fde31ef78398ff5a2d07882b1b0e26e17812 (diff) | |
| download | fpm-door-lock-db9b2dacb951c2685e9f43801278f10f06e37056.tar.gz | |
README: current measurements.
| -rw-r--r-- | README.txt | 9 | ||||
| -rw-r--r-- | main.c | 2 |
2 files changed, 5 insertions, 6 deletions
@@ -1,16 +1,12 @@ CURRENT MEASUREMENTS -Inidividual parts: +PERIPHERALS: R503 FPM: When VCC is connected to a 3.31V supply, FPM draws 13.8mA of quiescent current. When VCC is disconnected (3.3VT connected to 3.31V supply), it draws 2.9uA. -ATmega328P: - -MOSFET: - FS5106B high-torque servo: One of them draws 6.1mA when connected and stabilizes at 4.6mA. The other drew @@ -37,6 +33,9 @@ MP1584EN BUCK CONVERTER 1. When the system is in power down mode, the MCU + FPM + Servo draw 8.9mA at 3.3V. The real amount is likely about 8.9 + 4.6 = 13.5mA. + 2. When FETs are used quiescent current drops to 0uA. + 3. Active current draw (when the servo rotates) measured are 152.8mA, 162.8mA, + 170.3mA REMARKS @@ -119,8 +119,8 @@ int main(void) /* power on peripherals */ FET_DDR |= (1 << FET_FPM) | (1 << FET_SERVO); - fet_on(); + fpm_init(); /* servo */ |
