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Hello everyone, I am using HSDL-9100 sensor (see datasheet here : https://www.broadcom.com/products/optical-sensors/proximity-sensors/hsdl-9100-021#documentation), to develop an object detection system to save battery power during idle time in an electronic security product i am working on, in...

Thank you everyone for your support, was really helpful, ATarek

Hi everyone, I have developing a keypad for a project i am working on using tactile switch matrix, However there is a plastic element that should be present between the switch and the button that looks like the one in the image below, Can someone please tell how to make this element in...

Hi everyone, I found the answer, when i refered to Atmel eeprom datasheet, there seem to be a truncation code in order to define different eeprom ic chips, sorry for the late coming back, Thank you, ATarek

Hi everyone, I found the schematic (attached) of 13.56Mhz sniffing circuit as per following project, http://iloapp.marcboon.com/blog/rfid?Mobile&category=0&page=2 The project owner is providing the schematic and PCB layout as open source project, However, it looks like the project is closed...

Hi everyone, I cannot find a reference for eeprom chip ATMLH524 nor ATMLH544 on the web, Can anyone help me with this issue, Thanks in advance, ATarek

I'm sorry if the question is not very clear, Is there an RFID reader Chip that can operate with 2 antennas, V1BLL, Do you know suppliers that can help me develop such modules but with specified dimensions? Thanks in advance, ATarek

V1Bell, Thank you for your answer, I really learned from you, ATarek

Hi everyone, I need to make an RFID solution with 2 antennas, Is there a reader in the market that can do this job, Thanks in advance, ATarek

Thank you everyone for your answer, and sorry for the redundant question, V1Bell, i am looking for a non mechanical solution to detect the presence of a card, Thanks in advance, ATarek

Hi everyone, I have a problem and i need help, I am building an access control system, using RFID 13.56Mhz, but in order to save the battery's life, i have to implement a wake up system that senses that presence of the RFID tag, then it signals the MCU to wake up and take the necessary...

Hi everyone one, Can anyone help define what is Port1 and Port2 names in the below picture?, because i need to select a connector that connect Port1 to an SMA female connector that is located on my PCB Thanks advance, Atarek

Hi everyone, I need your help in something, I am designing an RFID system using NXP chip MFRC522, in order to get the antenna series equivalent circuit, I have to make some measurement using a vector network analyzer. the VNA i have access to now is R&S 10Mhz to 67Ghz, the operating frequency...

Thank you everyone for your support. About the MFRC522 ready made module, i already have it, but i am trying to design my own reader,

Hi all, I am design EMC filter part of the MFRC522 Antenna Circuit, in the AN1445 application note, i find the the below recommendation, Can someone please explain what does it mean L0 = 390nH - 1uH I am sorry if this is a dumm question Thanks in advance, ATarek

Yes this is real measured from Rohde & Shwartz device

Hello everyone, I recently start developing an RFID circuit MFRC522 IC, following the NXP application note AN 1445, When i try to get the series equivalent of the antenna coil using the VNA, i get a very noisy reading when i try to read the real part of the impedance S11, it varies from 6 to 10...

Thank you everyone for your support, However, MacGyverS2000, I'm sry for the weak description, identification is based on RFID 13.56 Mhz, the system is battery powered, so, in order to save battery life, the system goes to sleep, but it can wake up when the user wave the card in front of it. My...

Hello everyone, I have a problem and i need help, I am designing an access control, Generally the system go to sleep mode in order to save the battery life, The problem is that i want the system to detect the presence of the Mifare RFID tag in order to go to wake up mode, knowing that the...

Many thanks for your answers, Atarek