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Article

4-Channel, 2-Flavor Remote Control

with XBee or nRF24 radio modules

4-Channel, 2-Flavor Remote Control
4-Channel, 2-Flavor Remote Control
Labs Project
Based on a Labs project | June 2015 | Find it here
Cheap ISM-band radio modules are great for making simple remote-controlled (RC) toys and other RC devices which need nothing more than throwing some switches on and off and running a couple of motors. However, when a greater degree of control is needed, for instance when running a few servos for controlling a model plane’s rudder, elevator, aileron, and a brushless motor while at the same time receiving feedback from each of these actions, your plain simple radio control is, ermm … too simple.

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Materials

Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.

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The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.

PCB

Extra info / Update

* Four channels
* Two architectures
* Long range
* Low cost

Component list

Component List – 150408-1 nRF24 Transmitter
Resistors
P1-P4 = 10kOhm trimpot
R1 = 10kOhm
R2 = 220Ohm
Capacitors
C1 = 1µF, 6.3V, 2.5mm pitch
C2 = 100µF, 6.3V, 3.5mm pitch
C3 = 100nF
Semiconductors
IC1 = MCP1700-3302E/TO
IC2 = ATmega328P-PU, programmed (Store # 150408-41)
LED1 = green, 3mm
Miscellaneous
K1 = 8-way (2x4) pinheader socket, 0.1” pitch
K2 = 2-pin pinheader, 0.1” pitch
K3 = 6-pin (2x3) pinheader, 0.1” pitch
S1-S8 = tactile switch, 6x6 mm
SW1 = slide switch (OS102011MS2QN1C)
nRF24L01+PA+LNA (+ antenna)
PCB # 150408-1


Component List – 150408-2 nRF24 receiver
Resistors
R1 = 10kOhm
R2 = 220Ohm
Capacitors
C1,C4 = 1µF, 6.3V, 2.5mm pitch
C2 = 100µF, 6.3V, 3.5mm pitch
C3 = 100nF
Semiconductors
IC1 = MCP1700-3302E/TO
IC2 = ATmega328P-PU, programmed (Store # 150408-42)
IC3 = 7805
LED1 = green, 3mm
Miscellaneous
K1 = 8-way (2x4) pinheader socket, 0.1” pitch
K2 = 2-pin pinheader, 0.1” pitch
K3 = 6-pin (2x3) pinheader, 0.1” pitch
K4-K7 = 3-pin pinheader, 0.1” pitch
SW1 = slide switch (OS102011MS2QN1C)
NRF24L01+PA+LNA (+ antenna)
PCB # 150408-2
Component List – 150408-3 Xbee transmitter
Resistors
P1-P4 = 10kOhm trimmer
R1-4 = 10kOhm
R5 = 120Ohm
R6 = 220Ohm
Capacitors
C1 = 100nF
C2 = 10µF, 6.3V, 2.5mm pitch
Semiconductors
IC1 = LD1117S12TR
D1-16 = 1N4148
LED1 = LED, green, 3 mm
Miscellaneous
K1 = 2-pin pinheader, 0.1” pitch
K2,K3 = 10-way pinheader socket, 2mm pitch
S1-S8 = tactile switch, 6x6 mm
S9 = slide switch (OS102011MS2QN1C)
Xbee S2C or Xbee-Pro S2C (+ antenna)
PCB 150408-3
No firmware
Component List – 150408-4 Xbee receiver
Resistors
R1 = 10kOhm
R2 = 220Ohm
Capacitors
C1,C3 = 1µF, 6.3V, 2.5mm pitch
C2 = 2.2µF, 6.3V, 2.5mm pitch
Semiconductors
IC1 = MCP1700-3302E/TO
IC2 = 7805
IC3 = ATmega328P-PU, programmed (Store # 150408-43)
LED1 = green, 3mm
Miscellaneous
K1 = 2-pin pinheader, 0.1” pitch
K2, K3 = 10-way pinheader socket, 2mm pitch
K4-7 = 3-pin pinheader, 0.1” pitch
K8 = 6-pin (2x3) pinheader, 0.1” pitch
S9 = slide switch (OS102011MS2QN1C)
Xbee S2C or Xbee-Pro S2C (+ antenna)
PCB # 150408-4

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