BBM-Pi-Adaptor (ref. Pi Adaptor) is a Raspberry Pi adaptor, designed to provide a standard Raspberry Pi with a MatesBUS interface, to connect products such as the TIMI-96 directly to the Raspberry Pi bus.

The Pi Adaptor also features a 5-pin programming header, to program the connected device directly through the Pi Adaptor using the BBM Programmer, and a selection switch (on the back – accessible from the side) to switch between device programming mode or connection of the device to the Pi.

Product Features

The Pi Adaptor connects to the Raspberry Pi’s 40 pin interface, breaking out selected pins for use with the MatesBUS. It also features a selector switch, which interrupts the Raspberry Pi’s TX signal, to direct the MatesBUS RX signal to the programming header instead. This allows the Pi Adaptor to be left connected to the Raspberry Pi when the connected device (such as the TIMI-96) is required to be programmed.

The only interface to the MatesBUS is a 3.3V level Asynchronous Serial UART and is used to communicate between the Raspberry Pi and the connected device on the MatesBUS.

Hardware Detail

The Pi Adaptor utilises the BBM MatesBus, which is a unique interface pinout designed to be simple and easy to use.

The MatesBus is made up of 2 rows of 5 pins, 0.1” (2.54mm) pitch, spaced 0.3” (7.62mm) apart, ideal for direct plug into a breadboard, or compatible adaptor or development board.

Hardware Interfaces

The Pi Adaptor connects to the Raspberry Pi’s 40 pin interface and utilises the Serial UART of the Raspberry Pi to connect the MatesBUS headers.

System Pins

+5V (Device Supply Voltage)
Display supply voltage pin. This pin supplies the MatesBUS with 5VDC from the Raspberry Pi.

GND (Module Ground)
Device ground pin.

TX (Serial UART Transmit – MatesBUS)
TX of the MatesBUS connects to RX of the Raspberry Pi, this is the 3.3V Asynchronous Serial UART Transmit for communications between the device connected to the MatesBUS headers and the Raspberry Pi.

RX (Serial UART Receive – MatesBUS)
RX of the MatesBUS connects to TX of the Raspberry Pi, this is the 3.3V Asynchronous Serial UART Receive for communications between the device connected to the MatesBUS headers and the Raspberry Pi.

RESET (MatesBUS Reset)
This pin is primarily connected to the BBM-Prog header, for programming the connected MatesBUS device, such as the TIMI-96. Is it also connected to the Raspberry Pi via a 680ohm resistor to Pin7 (GPIO_4), making it possible for the Raspberry Pi to initiate a reset of the MatesBUS device as required.

NC (Not connected)
These pins are not connected or used on the MatesBUS by the Raspberry Pi.

HOST/PROG Switch

The HOST/PROG selection switch is used to switch the RX signal which comes from the MatesBUS, between the Raspberry Pi’s TX, and the BBM-PROG headers TX. This allows the User to select if the MatesBUS device is being programmed by the BBM-PROG header, or if its connected to the Raspberry Pi, making it possible to program the device such as the TIMI-96 without having to unplug it from the MatesBUS and the Pi Adaptor.

When you want communications to be between the Raspberry Pi and the MatesBUS device (such as the TIMI-96), the switch should be on HOST.

When you want the communications to be between the BBM-PROG header and the MatesBUS device, the switch should be on PROG.

Connection to the Raspberry Pi

The Pi Adaptor connects to the Raspberry Pi directly to its 40-pin interface.
The Pi Adaptor’s Female header connects to the Raspberry Pi’s male pins, and the body of the Pi Adaptor sticks outside of the Raspberry Pi. The writing on the silkscreen of the PCB of the Pi Adaptor should be oriented in the same way as the writing on the Raspberry Pi itself.

The MatesBUS device, such as a TIMI-96, then connects to the Pi Adaptor, matching the pinout naming on both devices.

To illustrate, here is a Raspberry Pi 4, with the Pi Adaptor, and a TIMI-96 all connected.

Connection of BBM Programmer

The Pi Adaptor has a 5-way male pin header on it, designed to connect directly to the BBM Programmer, allowing the connected BBM Device (such as TIMI-96) to be programmed without removing it from the Pi Adaptor or Pi itself.

When used in conjunction with the Host/Prog switch mentioned previously, this is achieved easily.

The BBM Programmer should be connected to the 5-way male pin header, upside down, as illustrated below. This allows the BBM Programmer to be directly connected.

Be sure to read the Datasheet for the BBM Programmer for further details on the programmer hardware itself, available from the breadboardmates.com website.

Hardware Drawing

Hardware Schematic

Revision History

Document

Revision Number Date Description
0.1 24/05/2021 Initial Draft
0.2 19/07/2021 Formatting Update
1.0 28/07/2021 Initial Public Release

Hardware

Revision Number Date Description
1.0 25/02/2021 Initial Revision
Download Datasheet
Back to Resource Centre

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BBM-Pi-Adaptor (ref. Pi Adaptor) is a Raspberry Pi adaptor, designed to provide a standard Raspberry Pi with a MatesBUS interface, to connect products such as the TIMI-96 directly to the Raspberry Pi bus.

The Pi Adaptor also features a 5-pin programming header, to program the connected device directly through the Pi Adaptor using the BBM Programmer, and a selection switch (on the back – accessible from the side) to switch between device programming mode or connection of the device to the Pi.

Product Features

The Pi Adaptor connects to the Raspberry Pi’s 40 pin interface, breaking out selected pins for use with the MatesBUS. It also features a selector switch, which interrupts the Raspberry Pi’s TX signal, to direct the MatesBUS RX signal to the programming header instead. This allows the Pi Adaptor to be left connected to the Raspberry Pi when the connected device (such as the TIMI-96) is required to be programmed.

The only interface to the MatesBUS is a 3.3V level Asynchronous Serial UART and is used to communicate between the Raspberry Pi and the connected device on the MatesBUS.

Hardware Detail

The Pi Adaptor utilises the BBM MatesBus, which is a unique interface pinout designed to be simple and easy to use.

The MatesBus is made up of 2 rows of 5 pins, 0.1” (2.54mm) pitch, spaced 0.3” (7.62mm) apart, ideal for direct plug into a breadboard, or compatible adaptor or development board.

Hardware Interfaces

The Pi Adaptor connects to the Raspberry Pi’s 40 pin interface and utilises the Serial UART of the Raspberry Pi to connect the MatesBUS headers.

System Pins

+5V (Device Supply Voltage)
Display supply voltage pin. This pin supplies the MatesBUS with 5VDC from the Raspberry Pi.

GND (Module Ground)
Device ground pin.

TX (Serial UART Transmit – MatesBUS)
TX of the MatesBUS connects to RX of the Raspberry Pi, this is the 3.3V Asynchronous Serial UART Transmit for communications between the device connected to the MatesBUS headers and the Raspberry Pi.

RX (Serial UART Receive – MatesBUS)
RX of the MatesBUS connects to TX of the Raspberry Pi, this is the 3.3V Asynchronous Serial UART Receive for communications between the device connected to the MatesBUS headers and the Raspberry Pi.

RESET (MatesBUS Reset)
This pin is primarily connected to the BBM-Prog header, for programming the connected MatesBUS device, such as the TIMI-96. Is it also connected to the Raspberry Pi via a 680ohm resistor to Pin7 (GPIO_4), making it possible for the Raspberry Pi to initiate a reset of the MatesBUS device as required.

NC (Not connected)
These pins are not connected or used on the MatesBUS by the Raspberry Pi.

HOST/PROG Switch

The HOST/PROG selection switch is used to switch the RX signal which comes from the MatesBUS, between the Raspberry Pi’s TX, and the BBM-PROG headers TX. This allows the User to select if the MatesBUS device is being programmed by the BBM-PROG header, or if its connected to the Raspberry Pi, making it possible to program the device such as the TIMI-96 without having to unplug it from the MatesBUS and the Pi Adaptor.

When you want communications to be between the Raspberry Pi and the MatesBUS device (such as the TIMI-96), the switch should be on HOST.

When you want the communications to be between the BBM-PROG header and the MatesBUS device, the switch should be on PROG.

Connection to the Raspberry Pi

The Pi Adaptor connects to the Raspberry Pi directly to its 40-pin interface.
The Pi Adaptor’s Female header connects to the Raspberry Pi’s male pins, and the body of the Pi Adaptor sticks outside of the Raspberry Pi. The writing on the silkscreen of the PCB of the Pi Adaptor should be oriented in the same way as the writing on the Raspberry Pi itself.

The MatesBUS device, such as a TIMI-96, then connects to the Pi Adaptor, matching the pinout naming on both devices.

To illustrate, here is a Raspberry Pi 4, with the Pi Adaptor, and a TIMI-96 all connected.

Connection of BBM Programmer

The Pi Adaptor has a 5-way male pin header on it, designed to connect directly to the BBM Programmer, allowing the connected BBM Device (such as TIMI-96) to be programmed without removing it from the Pi Adaptor or Pi itself.

When used in conjunction with the Host/Prog switch mentioned previously, this is achieved easily.

The BBM Programmer should be connected to the 5-way male pin header, upside down, as illustrated below. This allows the BBM Programmer to be directly connected.

Be sure to read the Datasheet for the BBM Programmer for further details on the programmer hardware itself, available from the breadboardmates.com website.

Hardware Drawing

Hardware Schematic

Revision History

Document

Revision Number Date Description
0.1 24/05/2021 Initial Draft
0.2 19/07/2021 Formatting Update
1.0 28/07/2021 Initial Public Release

Hardware

Revision Number Date Description
1.0 25/02/2021 Initial Revision
Download Datasheet
Back to Resource Centre

Share this article on socials