Project help: Arduino Powered Bluetooth Key Finder
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Hi @Geethesh, If you are building simple POC (Proof of concept ) or Quick prototype then the HC-05 is enough with the ATtiny.
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For the ATtiny45 minimum circuit you only need one Pull up resistor for Reset, and one Filter capacitor between VCC and ground and you also need to populate ICSP pins for programming
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You also need only two external componts HC-05 and Buzzer .
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In the this project we did't require any external oscillator , the internal 8mhz should be fine .
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@salmanfaris thank u for the details and circuit
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@Geethesh , keep in mind ATtiny series doesn't have Hardware Serial, so you should use the SoftwareSerial for that you also need two more for UART communication (Rx, Tx) between Arduino and Bluetooth.
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@Geethesh In case if you live near kalamassery(where Fablab is situated) I strongly suggest to go to Fablab where you can find all the necessary tools and IC's required.
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@kowshik1729 yes
Recent Posts
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@codelery said in Help needed: Arduino Wireless Notice Board project:
I am using the hardware serial (pin 0 and 1 on Arduino Uno)
As @rafitc99 mentioned, you need to expand the Serila buffer, in the hardware serial also the Arduino board package implements a 64-byte ring buffer for send and receive on the hardware serial messages. So you need to change that to 256 as per your message length.
