Hobby Components SmartLCD Keypad Kit (HCKITS0058)

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admin
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Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by admin » Thu Jul 13, 2017 3:19 pm

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The SmartLCD Keypad Kit is an optional add-on for the Hobby Components Smart LCD (HCMODU0122). When constructed this add-on board connects to the SmartLCD's keypad header using a single 4 way cable (supplied). Once connected it adds the additional features of keypad control (up, down, left, right, select, and back) and audible output to your end application.

Access to button states and speaker output is then available via the SmartLCD's I2C or UART interfaces using its built-in commands (See the SmartLCD's manual for more information)


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Features:

Product code: HCKITS0058
Connects to the Smart LCD to add keypad input and speaker output to your application - no additional pins required
Control of keypad and speaker is done through existing Smart LCD serial commands.
Adds UP, DOWN, LEFT, RIGHT, SELECT, and BACK keypad control.
Easy to solder through-hole components.
Designed to allow panel mounting.


Dimensions:

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Build Guide:

Resistors

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Locate the following pads on the PCB and solder the appropriate resistors in place.

R8 Resistor Value: 10K (BROWN, BLACK, BLACK, RED, BROWN)

R7 Resistor Value: 5.6K (GREEN, BLUE, BLACK, BROWN, BROWN)

R6 Resistor Value: 3.6K (ORANGE, BLUE, BLACK, BROWN, BROWN)

R5 Resistor Value: 2.2K (RED, RED, BLACK, BROWN, BROWN)

R4 Resistor Value: 1.8K (BROWN, GRAY, BLACK, BROWN, BROWN)

R3 Resistor Value: 10K (BROWN, BLACK, BLACK, RED, BROWN)

R2 Resistor Value: 1K (BROWN, BLACK, BLACK, BROWN, BROWN)

R1 Resistor Value: 100R (BROWN, BLACK, BLACK, BLACK, BROWN)



4 way R/A header pins

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The 4 way header can be soldered to the either the upper or lower side of the PCB depending on your preference. Soldering tip - Solder just 1 pad first then check to make sure the header is flat against the PCB. If it isn't it will be easier to adjust. Once level the remaining 3 pads can be soldered.



Speaker

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Solder the speaker to pad SP1. Note that the speaker should be orientated so that the '+' symbol on the speaker is on the same side as the '+' symbol on the PCB.



Transistor

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Solder the transistor to pad Q1. Note that the transistor should be orientated so that the flat side of it's case matches the flat side of its PCB symbol.



Switches

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Solder the six 12mm x 12mm push switches to pads SW1, SW2, SW3, SW4, SW5, and SW6. Note the orientation of the pins in the above diagram.



Switch caps

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Finally, add the caps to the push buttons so that they match the above image.


Schematic:
SmartLCD_Keypad_Schematic_HCKITS0058.pdf



Disclaimer: Libraries, example code, and diagrams are provided as an additional free service by Hobby Components and are not sold as part of this product. We do not provide any guarantees or warranties as to their accuracy or fitness for purpose.

Descriptions and diagrams on this page are copyright Hobby Components Ltd and may not be reproduced without permission.
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steve001
Posts: 31
Joined: Tue Dec 30, 2014 3:27 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by steve001 » Sun Aug 07, 2022 3:48 pm

Afternoon,

Is it possible for a circuit diagram please ?
Is this just various resistor divider networks to the analogue pin ?

Regards

Steve

andrew
Site Admin
Posts: 1280
Joined: Sun Aug 05, 2012 4:15 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by andrew » Mon Aug 08, 2022 8:39 am

I've added the schematic to the bottom of the first post.

Is this just various resistor divider networks to the analogue pin ?
Yes that's correct.
Comments made by this poster do not necessarily reflect the views of Hobby Components Ltd.

steve001
Posts: 31
Joined: Tue Dec 30, 2014 3:27 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by steve001 » Mon Aug 08, 2022 10:15 am

Hi Andrew

Thank you again

Regards

Steve

steve001
Posts: 31
Joined: Tue Dec 30, 2014 3:27 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by steve001 » Sun Aug 21, 2022 3:57 pm

Hi Andrew

There is a typo on the schematic vs the drawing

The Module shows the following :-

SW3 as "DOWN" SW3 on the Schematic is "RIGHT"
SW4 as "RIGHT" SW4 on the Schematic is "DOWN"

when Testing

Right gives 4K Ohms
Down gives 7.6K Ohms

Regards

steve

andrew
Site Admin
Posts: 1280
Joined: Sun Aug 05, 2012 4:15 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by andrew » Mon Aug 22, 2022 7:47 am

Thanks for pointing it out. It looks like I accidently uploaded the schematic for a surface mount version. I've now replaced it with the through-hole version which looks to be in the correct order. Sorry for the confusion.
Comments made by this poster do not necessarily reflect the views of Hobby Components Ltd.

steve001
Posts: 31
Joined: Tue Dec 30, 2014 3:27 pm

Re: Hobby Components SmartLCD Keypad Kit (HCKITS0058)

Post by steve001 » Mon Aug 22, 2022 4:21 pm

Thank you

Did think i was going mad for a while

Steve

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