RB2AMPController

Radioberry AMP Controller Board by PA3GSB

RB2AMPController (Radioberry V2.0 Amplifier Controller)

The board contains an ethernet module and a Raspberry Pi Pico (RP2040) module which implemets a TCPIP server.

The radioberry firmware talks to the controller server using a TCPIP client.

The information in the openhpsdr protocol-1 is used to control the amplifier. So if you change the frequency in your favourite SDR program the LPF filter in the AMP will be set. Also when going into transmit; the AMP will make use of a sequencer and will switch the relais in the right order.

Information of the AMP will be placed into the protocol and will be presented in the SDR program user interface to the operator. Information here is the temperature of the AMP, the forward and reverse power.

This controller board supports works for now only with the radioberry juice board.

RB2AMPController-Protocol

REQUEST (to server / AMP Controller)

indentification 4bytes: 0x00 0x00 0xef 0xfe byte 5: off 0x00 standby 0x0f
active 0xff
byte 6: PTT 0x00 PA off. 0xFF PA on. byte 7: lpf 0x00 no LPF filter. 0x01 160m 0x02 80m 0x03 60m 0x04 40m 0x05 20m 0x06 10m

Total 20 bytes (so some spare bytes)

RESPONSE (from server / AMP Controller)

identification 4bytes: 0x00 0x00 0xef 0xfe byte 5: versie pa firmware (1/10 => 0.1) divide by 10. byte 6, 7 temp byte 8, 9 forwrd pwr byte 10,11 reverse pwr byte 12,13 u (not implemented) byte 14,15 i (not implemented) byte 20 error

Total 20 bytes (so some spare bytes)

Firmware of the RB2AMPController

The RPI pico board contains a microcontroller which need a firmware.

For loading this firmware you need to connect a USB cable to the board. Push the button on the Pico and then plug the USB cable into your PC. The Pico will appear as a flash drive on the PC. Then copy the file xxx.uf2 to the Pico.

The Pico will reboot and the Pico LED will flash slowly.

adding descriptions per port.

Fan Control

PWM controlled FAN