// comms
nRF24L01+
2.4 GHz transceiver (point-to-point / mesh)
€1.50
avg eur
no image
SPI
Pins
8
Specs
4
Libraries
2
Protocols
1
// wiring → esp32 devkit v1
VCC
3V3
EN
GPIO36
VP
GPIO39
VN
GPIO34
GPIO35
GPIO32
GPIO33
GPIO25
GPIO26
GPIO27
GPIO14
GPIO12
GND
GND
GPIO13
ESP32
WROOM-32
devkit v1
USB
VIN
5V
GND
GPIO23
MOSI
GPIO22
SCL
GPIO1
TX0
GPIO3
RX0
GPIO21
SDA
GPIO19
MISO
MISO
GPIO18
SCK
SCK
GPIO5
SS
CSN
GPIO17
TX2
GPIO16
RX2
GPIO4
CE
GPIO2
IRQ
GPIO15
sensor pin (left)
sensor pin (right)
unused
// pinout → esp32
| Sensor Pin | ESP32 Connection |
|---|---|
| VCC | 3.3V (use 10µF cap) |
| GND | GND |
| SCK | GPIO 18 |
| MOSI | GPIO 23 |
| MISO | GPIO 19 |
| CSN | GPIO 5 |
| CE | GPIO 4 |
| IRQ | GPIO 2 (opt) |
// technical specs
Frequency
2.400–2.525 GHz (125 ch)
Bitrate
250 kbps – 2 Mbps
Range
~100 m (PA/LNA: 1 km)
Voltage
3.3V
// github libraries
// notes & warnings
Brown-outs are the #1 problem — solder a 10µF (or 100µF) cap directly across module VCC/GND. Don't power from a noisy USB rail. PA/LNA variants need an external antenna.