BreadMate Button 4+1

5 'tactile' buttons in an up, down, left, right, centre configuration.

toptopthe topside of the Button 4+1 board undersideundersidethe underside of the Button 4+1 board
5 surface-mount tactile pushbuttons
  • up/down/left/right/centre configuration
  • 5 i/o pins required
  • ground flying lead
  • 1.4" by 1.2" (36mm by 30mm)

Each pin is connected to a single button. When a button is pressed, its pin will be connected to ground.

It is suggested that pull-up resistors are used on the uC's input pins to ensure that a 'high' state is read when the buttons are not being pressed. This can either be done using an external resistor or by configuring internal pull-up resistors to be activated.

On (most?) AVR ATMega and ATTiny uCs, internal pull-ups can be enabled by simply setting the relevant PORT bit for an input pin to '1' (this assumes that the global "Pull-up Disable" [PUD] bit [in MCUCR] hasn't been changed from it's default of 0 [pullups enabled]).

Sample code will be available soon. it will include provision for debouncing of the buttons.

Note: We've now dropped the 'right-angled pins' option to save confusion. The vast majority of people want the plain 'straight pins' option, meaning that the board sits flat on the top of a breadboard.
If you really, really want right-angled pins (or even no pins at all), just order the 'straight pins' version and drop us an email at the same time - we'll sort it out for you.

Note: This part is currently being made with black buttons, rather than the white ones shown in the pictures.

Purchasing

Parts with a BMB0041 prefix.

Part# Description price
BMB0041SA straight pins £4.00 Add Add to Basket
BMB0041RA right-angled pins £
no longer available

Files

circuit schematics

Version Date File Size
1.1 2008-09-15 (PDF file) sch_bm_button_4_1_11.pdf (20.0 KB)