# Keypad + LCD + RFID help needed / issue

**URL:** <https://discourse.nodered.org/t/keypad-lcd-rfid-help-needed-issue/32638>\
**Category:** General\
**Created:** [9 September 2020 10:53 UTC](https://discourse.nodered.org/t/keypad-lcd-rfid-help-needed-issue/32638 "2020-09-09T10:53:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Peter](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/peter/32/25135_2.png) [@Peter](https://discourse.nodered.org/u/Peter)\
**Post date:** [9 September 2020 10:53 UTC](https://discourse.nodered.org/t/keypad-lcd-rfid-help-needed-issue/32638/1 "2020-09-09T10:53:53Z")

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HI Superstars,

I am a newbie and need some urgent help PLEASE. I have a project whereby I need to use a Captive touch keypad, OLED screen, an RFID tag reader. The user needs to identify itself with the RFID tag and insert 3 options from the keypad to the display. Capture the data in the SQLite table. ( i have the SQLite sorted: wink:) then needs to export the data end of the week via

- Download/export / email CSV file from dashboard Button

Here is some detail up front that might be requested later ,

- Raspberry pi zer w / RaspbianOS updated

- Npm / v 6.14.6

- Node.js / v 12.18.3

- Node-red / v 1.1.3

-hardware - 16 Keys Capacitive touch TTP229 I2C module\*\* ( PIN: 2-5v , 3-SDA , 5-SCL , 6-GND)  
-hardware - 2.23inch OLED HAT / 128\*32 / i2c interface ( PIN : 1-3v , 3-SDA , 5-SCL , 9-GND )  
-hardware - RFID 125KHZ + 13.56MHZ Reader Module / \* Interface: Wiegand\*\* **(PIN:??)**

**Issue 1**  
I have never worked with BUS ports before and would appreciate it if someone could assist/inform me how to set up the bus address for the OLED and keypad to run off the same pin 3 and 5 ( SDA/SCL i2c ) ports. I do have the OLED on bus port 3c and working with the "OLED node" but can't seen to setup the keypad whatsoever !!

**Issue 2**  
I would like to know how to set up the Wiegand pins on the PI and what GPOI's do I need to use. I have tried the " node-red-contrib-nfc" nodes but had no data out.

Your quick, kind, and positive responses is welcome.

thank you in advance

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<div class="post-metadata">

**Author:** ![Peter](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/peter/32/25135_2.png) [@Peter](https://discourse.nodered.org/u/Peter)\
**Post date:** [9 September 2020 11:39 UTC](https://discourse.nodered.org/t/keypad-lcd-rfid-help-needed-issue/32638/2 "2020-09-09T11:39:47Z")

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anyone ? somebody ? nothing ?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [8 November 2020 11:39 UTC](https://discourse.nodered.org/t/keypad-lcd-rfid-help-needed-issue/32638/3 "2020-11-08T11:39:48Z")

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Closed on 8 November 2020 11:39 UTC

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