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My Tiny Radio

One radio — three platforms

LABSPROJECT
Based on a Labs project | January 2016 | Find it here
My Tiny Radio
Using a tiny VHF receiver module you can build a mini-radio controlled by an ATtiny controller or even better, why not choose the ATmega option?
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Products
Relevant websites
Extra info / Update
* 50–115 MHz tuning range
* Single-Chip Stereo FM Tuner with I2C interface
* Compact Break-out-Board
* RDS support
* Automatic station scanning
* Headphones socket (32 Ohm minimum)
* Operating supply 3.3 to 5 V at <100 mA
* Control via ATtiny, ATmega or Arduino
Component list
Component List for Atmega version
Resistors
R1,R2,R3 = 10kOhm
P1 = 10kOhm trimpot
Capacitors
C1,C2 = 100nF, 2.5mm pitch
C3 = 1µF 50V, electrolytic, 2mm pitch
C4 = 2.2µF 50V, electrolytic, 2mm pitch
Semiconductors
D1 = 1N4148
U1 = ATMEGA328P-PDIP, programmed, Elektor Store # 150587-41
IC1 = LP2950
Miscellaneous:
K1 = 4-way pinheader socket, 2mm pitch
LCD1 = LCD (2x8) with 16-way (2x8) pinheader socket, 0.1‘‘ pitch
U1 = DIP28-narrow IC socket
SW1 = rotary encoder, Alps EC12E2424407
K2 = DC adaptor socket, 2.5mm (Lumberg NEB21R)
I2C FM Radio module (Seeed Studio)
Prototyping board ELPB-NG, Elektor Store # 150180-1
Component List for ATtiny version
Resistors
R1,R2 = 4.7kOhm
P1 = 100kOhm trimpot
Semiconductors
U1 = ATTINY85-20PU, programmed, Elektor Store # 150587-42
Miscellaneous:
S1,S2 = pushbutton, 6x6mm
K1 = 4-way pinheader socket, 2mm pitch
U1 = DIP8 IC socket
I2C FM Radio module (Seeed Studio)
Holder for 3 AAA batteries
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