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Wireless ‘Next Track’ button for the Media Player

It’s always a bonus when you realize you can use part of a previous Elektor project to solve a completely different problem. In this instance we use the transmitter design from the recent ‘Wireless Quizbuttons’ project in combination with some clever Hoodloader software for the Arduino to provide a remote control function for a media player running on a PC.
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Relevant websites
Extra info, Update
From the Store
150650-1 Receiver PCB in USB-stick form.
150650-41 Microcontroller, Receiver.
150650-71 Kit of parts, including Receiver PCB in USB-stick form, transmitter PCB (from the ‘Wireless Quiz’ project), all components including radio module and USB enclosure.
150180-1 ELPB-NG prototyping PCB to build the initial receiver design.
150499-2 Transmitter PCB (Wireless Quizbuttons).
150499-42 Microcontroller, Transmitter (Wireless Quizbuttons).
150499-91 Populated radio module.
Component list
Component List, Arduino Shield
R1 = 1kOhm
C1 = 100µF 50V, 3.5mm pitch, 8mm diam.
LED1 = LED, green, 3mm
MOD1 = NRF24L01+ 2.4 GHz Wireless-Transceiver module, Elektor Store # 150499-91)
K1 = 6-pin pinheader, 0.1’’ pitch
K,K3 = 8-pin pinheader, 0.1’’ pitch
K4 = 10-pin pinheader, 0.1’’ pitch
K5 = 8-way (2x4) pinheader socket, 0.1’’ pitch
PCB # 150180-1 v1.0 (ELPB-Ng)

Component List, USB-Stick Receiver
R1 = 10kOhm, 100mW, SMD 0603
R2 = 220Ohm, 100mW, SMD 0603
R3,R4 = 22Ohm, 100mW, SMD 0603
C1 = 1µF 25V, SMD 0603
C2 = 100nF 16V, SMD 0603
C3.C4 = 22pF 50V, SMD 0603 (C0G/NP0)
C5 = 10µF 16V, SMD 1206
L1 = ferrite bead, 0.4Ohm, 200mA (Murata BLM21BD102SN1D)
LED1 = LED, red, 3mm
D1,D2 = ESD suppressor diode (Littelfuse PGB1010603MR)
IC1 = ATmega16U2-AU, programmed, # 150499-41
F1 = 500 mA resetting PTC fuse, 15V (Bourns MF-MSMF050-2)
X1 = 16 MHz quartz crystal, 5x3.2mm
K1 = USB-A 2.0, right angled (SMD)
S1 = pushbutton, optional
MOD1 = NRF24L01+ 2.4GHz Wireless Transceiver module (Elektor Store # 150499-91)
USB Stick case (Strabubox USB1SW)
PCB # 150650-1 v1.0
Component List, Transmitter
Carbon film, 5%, 0.25W, 250V
R1 = 10kOhm
R2 = 6.8kOhm
C1,C2 = 100nF 50V, X7R, 5mm pitch
C3 = 100μF 50V, 3.5mm pitch, 8x11mm
IC1 = ATtiny85-20PU, programmed, Elektor Store # 150499-42
Bt1 = Battery halter for CR2032
K1 = 2x3-polige Stiftleiste
S1 = pushbutton weith large cap, (Sparkfun, red: COM-09181, green: COM-11275, blue: COM-11274)
PCB, Elektor Store # 150499-2 v1.0
8-way (2x4) pinheader and socket pair, 0.1’’ pitch (for MOD1)
CR2032 Lithium battery
MOD1 = NRF24L01+ 2.4GHz Wireless Transceiver module (Elektor Store # 150499-91)
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