Features:
Paxcounter is an ESP32 MCU based device for metering passenger flows in realtime. It counts how many mobile devices are around. This gives an estimation how many people are around.
Paxcounter detects Wifi and Bluetooth signals in the air, focusing on mobile devices by evaluating their MAC adresses.
Intention of this project is to do this without intrusion in privacy: You don't need to track people owned devices, if you just want to count them.
Therefore, Paxcounter does not persistenly store MAC adresses and does no kind of fingerprinting the scanned devices.
Data can either be be stored on a local SD-card, transferred to cloud using LoRaWAN network or MQTT over TCP/IP, or transmitted to a local host using serial (SPI) interface.
At the TTGO LoRa V2.1_1.61 ,we add the SMA and TP4054 to the board,which make it can do more things.In terms of the power switch, we have changed the switching interaction mode. The added SMA antenna can enhance signal transmission.
Product Description:
Working voltage:
1.8~3.7v
Acceptable current：
10~14mA
Transmit current:
120mA@+20dBm
90mA@+17dBm
29mA@+13dBm
Operating frequency:
868M/915MHz
Transmit power:
+20dBm
Receive sensitivity :
-139dBm@LoRa &62.5Khz&SF=12&146bps
-136dBm@LoRa &125Khz&SF=12&293bps
-118dBm@LoRa &125Khz&SF=6&9380bps
-123dBm@FSK&5Khz&1.2Kbps
Frequency error：
+/-15KHz
FIFO space ：
64Byte
Data rate ：
1.2K~300Kbps@FSK
0.018K~37.5Kbps@LoRa
Modulation Mode ：
FSK,GFSK,MSK,GMSK,LoRa TM，OOK
Interface form ：
SPI
Sleep current ：
0.2uA@SLEEP
1.5uA@IDLE
Operating temperature ：
-40℃- +85℃
Digital RSSI function:
Automatic frequency correction
Automatic gain control
Fast wake-up and frequency hopping
Highly configurable data packet handler
SMA Antenna
TP4054
