Box bottom button resources analysis

1, 8 independent keys

Man-machine interface input part of the important module, free connection, not limited by hardware. Pull-up resistor for easy control of various MCUs.

1) Schematic

2) Physical map

3) Interface description

The interface number is JP69, which are respectively K1, K2, K3, K4, K5, K6, K7, and K8.

The keys for control are: K1-K1, K2-K2, K3-K3, K4-K4, K5-K5, K6-K6, K7-K7, K8-K8.

2, 4X4 matrix keyboard

Can learn the row scan, reverse scan, timing scan, interrupt scan, keyboard identification is complete, according to the standard calculator arrangement. Pull-up resistor for easy control of various MCUs.

1) Schematic

2) Physical map

3) Interface description

The interface number is JP29, which are L1, L2, L3, L4, H1, H2, H3, and H4, respectively.

Corresponding to the 1st, 2nd, 3rd, 4th, 1st, 2nd, 3rd, and 4th columns of the matrix keyboard, respectively.

3, 5-way rocker button

The five-way rocker button can easily control the up, down, left, and right directions.

1) Schematic

2) Physical map

3) Interface description

The interface number is JP39, which are F1, F2, F3, F4, and F5.

The top, left, bottom, right, and middle of the joysticks, respectively.

UL Wiring Material

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UL iQ for appliance wiring materials

Single-Conductor, Themoplastic Insulation

1007 1015 1061 1185 1126 1227 1330 etc.

Multiple-Conductor, Thermoset Insulation

2464 2468 2725 2835 2990 20276 20379 21100 21118

Single-Conductor, Thermoset Insulation

3173 3265 3266 3271 3272 3302 3346 3347 3363 3383 3385 3386 3619


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