ESP32-Paxcounter 868 MHZ LoRa ESP-32 OLED 0.96 Inch SD Card Bluetooth WIFI Module SMA

TTGO ESP32-Paxcounter LoRa32 V2.1 1.6 Version 433/868/915 MHZ LoRa ESP-32 OLED 0.96 Inch SD Card Bluetooth WIFI Module SMA. 8

Paxcounter is a proof-of-concept device for metering passenger flows in real time. 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 filtering vendor OUIs in the MAC adress.

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 persistently store MAC addresses and does no kind of fingerprinting the scanned devices.

Bonus of this project is that metered data is transferred via a LoRaWAN network, not via usual GSM/LTE or Wifi uplink.

You can build this project battery powered and reach a full day uptime with a single 18650 Li-Ion cell.

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

RF wake-up function

Low voltage detection and temperature sensor

Fast wake-up and frequency hopping

Highly configurable data packet handler

SMA Antenna

At the TTGO LoRa V2.1_1.6, 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.

Pin Schematic

Shipping List

• 1 X TTGO LoRa32 V2.
• 1 X 433/868/915 Module 2 X Pin. If you are interested in 868/915 Module write to us. 
• 1 X Antenna 
• 1 X Power Cable 
• 1 X Free Box

Developing material 

• Data download link

• Paxcounter Testing

• LilyGO Data Link