7lQ3FnbM

Check in on DingTalk

Overview

It is essentially an RFID card. You need to weld the RFID chip on the back for normal use. After welding, use NFC Tools PRO to write the RFID chip as an application record - DingTalk. See the video for how to use it:

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-06-19 10:20:21

Pay attention to technical details in LED lighting design
LED light source technology is becoming more mature, and the luminous lumens per watt are increasing rapidly, which has led to a gradual price reduction. For example, the price of a 1W LED light sourc
CC2420 hardware address recognition problem
I use ZigBee to make a wireless alarm substation. The sensor transmits data to the substation through ZigBee. In order to distinguish each sensor, I turned on the module's hardware address recognition
STM32 built-in DAC output voltage amplified to drive piezoelectric ceramics
As shown in the figure, the output of the built-in DAC of STM32 is a step wave, which is amplified by the amplifier circuit to drive the piezoelectric ceramic. However, after the piezoelectric ceramic
f5529 and GPS communication restart problem
I made a product in the lab. GPS communicates with f5529, and 5529 sends the received GPS data to GPRS. However, when communicating with GPS, f5529 always restarts uninterruptedly. I don’t know why. I
Help --Application of Mechanical Filter for Remote Multi-point Control
This design requires using a single-chip microcomputer or single-chip microcomputer to control DDS to generate signals of multiple frequencies, and then use a mechanical filter to receive them at the
DirectShow capture problem
I developed a capture program using DirectShow under wm6.5, using PIN_CATEGORY_STILL. After the program runs, I use the rear camera to capture images, and the output is normal. When I switch to the fr

Datasheet More

Circuits More