RGrant

Member Since: May 15, 2008

Country: United States

Profile

Spoken Languages

English

Programming Languages

Delphi / C

Associations

Dallas Personal Roboitcs Group (www.dprg.org)

Universities

UTA BSCSE 1985

Interests

Computer Graphics / Embedded Computing / Robotics

  • Product WRL-08602 | about 3 years ago

    Yeah, Everything has to be just right for communication to work. Maybe someone can answer this question: Does SF still sell anything that is shipped with firmware that with receive factory default firmware fob messages? This is real handy start point. From there if you want to change FOB firmware you can, but can always reload factory firmware and verify your FOB is working.

  • Product WRL-08602 | about 3 years ago

    Good Question. SF used to sell a MiRF? module that shipped with firmware that would receive default fob firmware messages. One of their nRF2401 modules would plug into it and blink LEDs and send serial data to terminal to let you know everything worked.
    From there careful modification to programs to “keep things working” On FOB, I had no debug facility so I would write data chip EEPROM and read out with programmer.

  • Product WRL-08602 | about 3 years ago

    When programming FOBs I use a male 6 pin header friction fit into holes on fob. To keep the radio chip power within spec (3.6 volts and below), I pulled the +5 pin from the header making it a 5 pin header. The coin cell provides power for the Tiny24 while it is being programmed. The I/O on the 24L01+ is 5 volt tolerant, its power supply pins are not.

  • Product WRL-09019 | about 4 years ago

    If there is a rev 2 on this board, would be super sweet if there were at least pads for a crystal. Nice to not be limited to 9600 baud using microcontroller RC osc. Then the Mega168 could talk say 115,200 baud to host through FTDI chip – very handy when you really start using power of NRF24L01.

No public wish lists :(