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Recent content by JuhaH

  1. J

    I have some beginner-level questions about this ESP-WROOM-32 schematic.

    2. to prevent VCC being shorted to ground when button pressed. 3. common practise, won't hurt to add a cap. 4. close to pin on pcb is what matters
  2. J

    Maestro GPS module A2235-H UART data halted after 135 seconds ??

    Receiver put to binary mode, but new issues arise. Data is now in two stop bit mode even that request by NMEA message $PSRF100,0,38400,8,1,0*3C is for one. This prevents my MCU to alter data since it only supports 1 stop bit data. Another issues is that in binary mode data stream is not halted...
  3. J

    Maestro GPS module A2235-H UART data halted after 135 seconds ??

    Hi, In my project, only GGA and VTG messages are needed, so I configured the module by NMEA protocol messages to disable all other messages. Everything works fine until after 135 seconds module sends a message: $PSRF150,0*3E which is "not OkToSend" -message. The serial port is completely halted...
  4. J

    LTC4020 buck/boost charger conversion to Boost only ?

    Thanks for the reply, LTC3862 isn't a charger but a boost converter without CV/CC. Perhaps you could build one with additional controller but I'm more looking for stand alone unit here for 12S Li-Ion.
  5. J

    LTC4020 buck/boost charger conversion to Boost only ?

    Thanks for the output but LTC3862 is just a boost switcher regulator. Perhaps you could convert it to CV/CC charger with an external controller but I'm now looking for a stand alone unit. There isn't too many available as far as I have found, all of them end at 36V lacking my requirements of...
  6. J

    LTC4020 buck/boost charger conversion to Boost only ?

    Hi, I'm on my way of choosing the charger for 48V Li-Ion pack. First, do you know any alternative to LTC4020 to charge the 48V pack with 2Amps? So far I think LTC4020 is the most suitable, BUT... it is a buck boost charger and at the end I only need Boost section of the charger. So is there app...

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