Hiduino

Member Since: September 19, 2012

Country: United States

  • According to the MOSFET part markings, 7P6, it looks like it is from Diodes Inc. Part Datasheet ZXMP6A13F.PDF

    The TPL5110 supports P-Channel MOSFETs for high-side switching only. There are P-MOSFETs that have much lower Rds-on ratings and can support higher currents.

  • The One-Shot mode is more than just a switch. With a switch you will need to manually turn it on/off. Or with a momentary switch you will need to have external components for a flip-flop and timers or something to have it somewhat automated to turn off after a period. This TPL5110 chip is all in one, with very low power standby.

    One-Shot mode is very useful for external triggering of an event. Instead of periodically waking up in Timer mode and checking for some event if it occurred or not, thus wasting some power usage just for checking. Like for example a door switch, can wake it up and send an IOT message out, then go right back to low power shutdown state.

    Also to note the TPL5110 is better than just low power sleep modes of microcontrollers. It can power-off all your circuitry like power regulators or other components that have higher standby currents. So for battery powered projects nothing else (yet) comes close to this savings.

  • An example of ONE-SHOT mode is when you have a toy and you want it to remain off, saving power, and then only activate when you press a button. Then after it does it's thing, go back to power off.

  • The EN/ONE-SHOT pin is different from the DRV pin.

    "When EN/ONE_SHOT = HIGH, the TPL5110 works as a TIMER. When EN/ONE_SHOT = LOW, the TPL5110 turns on the MOSFET one time for the programmed time interval. The next power on of the MOSFET is enabled by the manual power ON."

    So this EN/ONE-SHOT pin is tied to VDD on this board. This forces the TPL5110 to permanently operate in Timer mode.

    In Timer mode it will periodically interrupt (power-cycle) the DRV pin at set intervals regardless of the DONE pin. All the DONE pin does is turn it off sooner. So if you tie the DONE pin to GND (disabling it), it will stay ON and then periodically turn off for 50 ms at the set interval and continually repeat.

    In ONE-SHOT mode it will remain off (forever) until the DELAY/M_DRV pin it toggled to VDD. Then remain ON for the set interval or until the DONE signal if it is received sooner than the set interval, and then remain off again.

  • I can't believe you guys didn't leave pin 6 broken out, so you could use it in One-shot mode!

    One-shot mode is very useful for interactive battery powered projects. In this mode, it will remain in low power off condition, until a button press to wake it up, and then power back off when either the timer runs out or if it gets a Done signal sooner.

    You need to make a new version of the board with the One-shot pin broken out.

  • I can't believe you guys didn't leave pin 6 broken out, so you could use it in One-shot mode!

    One-shot mode is very useful for interactive battery powered projects. In this mode, it will remain in low power off condition, until a button press to wake it up, and then power back off when either the timer runs out or if it gets a Done signal sooner.

    You need to make a new version of the board with the One-shot pin broken out.

  • Do you have available the 2x3 SMD headers that are used on the Redboard?

  • The bootloader appear to be affected by what is in the EEPROM memory. With certain values it does not execute the sketch. What kind of bootloader is reading the EEPROM? Do you have the sources for the bootloader used in the RedBoard?

  • I have been using this Cerberus cable with various devices without problems. But recently I've just tried an Arduino Due with the micro-B connector. It seems to work fine with the Due Programming port, but NOT with the Due Native port. Windows does not even recognize any device when plugged into the Due Native port. The Due Native port does work correctly with a regular USB Micro-B cable but not with this Cerberus cable. Has anyone else tried this?

No public wish lists :(