Welcome !
As requested by @Martin_Seibert I would like to give a short overview of the current status.
In the following you will be able to have some impressions about the Hardware.
Build on standard components (ESP, RFID-Reader 13,56 MHz, LCD etc.) in the actual version the TimeTracking-Terminal is connected by WLAN, 2 Touch-Sensors (come + go), 1 Buzzer (Sound-confirmation of touch- and reader-actions).
Frontview
Wall mount rear
Online state - waiting for FRID-Scan
RFID scan - COME
processing …
RFID scan - GO
processing …
Software-Features :
Any transaction is flash buffered. So up to aprox. 1000 transactions are buffered while downtime or maintenance times or even the TT-Terminal is not online and will be automaticly transmitted when the terminal will be back in normal state .
Due to security purposes and reduction of complexity inside the terminals, I’ve build a web-transaction-server as a Middleware-component between the terminal and ERPNext. This module did an encapsulation of the required information to access ERPNext and is also doing buffering functions like the hardware is doing, if there will be a communication loss or ERPNext will be in scheduled downtime for example. The communication proccess between the middleware and ERPNext is also monitored including automatic restart after any communication recovery.
Inside ERPNext the businesslogic is attached to the Timesheet-module. In the following you may see some screenshots of the corresponding transactions:
Overview of employee - transactions
Transaction detail - with Start and End-Time
All transactions will be manageable inside Timesheet-functions.
Please feel free to contact me if there are any additional questions.
Suggestions welcome !