Vizualizare sursă pentru „Nod mobil VHF/UHF cu RDA1846 și RPI Zero W”

Scopul acestui proiect este un nod mobil de RoLink realizat ca ''shield'' pentru un [https://www.raspberrypi.org/products/raspberry-pi-zero-w/ Raspberry Pi Zero W] care va asigura comunicarea cu internet-ul. RDA1846 este un transceiver care stă la baza portabilelor chinezești ieftine (Baofeng etc).
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===Status===
* Rev1.0 – Experimental, prototip, în lucru.
{| class="wikitable sortable"
|-
! Data !! Activitate !! Status
|-
| 26/10/2022 || Teste driver I2S || <span style="background-color:chartreuse;">Finalizat</span>
|-
| 24/11/2024 || Driver I2S pentru cip-uri Cirrus || <span style="background-color:chartreuse;">Finalizat</span>
|-
| 24/11/2024 || Schemă și proiectare PCB || în lucru
|-
| 20/10/2022 || Documentare detaliată || în lucru
|-
| 23/02/2020 || Documentare inițială || în lucru
|}

===Documentație===
* [[:Fișier:RDA1846 - Single Chip Transceiver for Walkie-Talkie.pdf|RDA1846 - Single Chip Transceiver for Walkie-Talkie]]
* [[:Fișier:RDA1846 Programming Guide.pdf|RDA1846 Programming Guide]]
* [[I2S|Pagina cu documentație I2S]]
====Componente====
* [https://statics.cirrus.com/pubs/proDatasheet/CS4344-45-48_F2.pdf CS4344/5/8] – The CS4344 family members (CS4344, CS4345, and CS4348) are complete, stereo digital-to-analog output systems including interpolation, multibit D/A conversion and output analog filtering in a 10-pin package. The CS4344 family supports major audio data interface formats. Individual devices differ only in the supported interface format.
* [https://media.digikey.com/pdf/Data%20Sheets/Cirrus%20Logic%20PDFs/WM8960.pdf WM8960] – The WM8960 is a low power, high quality stereo CODEC designed for portable digital audio applications. Stereo class D speaker drivers provide 1W per channel into 8Ω loads with a 5V supply. Advanced on-chip digital signal processing performs automatic level control for the microphone or line input. Stereo 24-bit sigma-delta ADCs and DACs are used with low power over-sampling digital interpolation and decimation filters and a flexible digital audio interface. The master clock can be input directly or generated internally by an onboard PLL, supporting most commonly-used clocking schemes.
* [https://master-nq.webp2.cirrus.com/products/wm8962-62b/ WM8962B] – Înlocuitorul lui WM8960
* [https://www.cirrus.com/products/eol/ Cirrus Logic Discontinued Products]
* [https://www.maximintegrated.com/en/products/analog/audio/MAX9880A.html MAX9880A] – Low-Power, High-Performance, Dual I²S, Stereo Audio Codec; The MAX9880A is a high-performance, stereo audio codec designed for portable consumer applications such as smartphones and tablets. Operating from a single 1.8V supply to ensure low-power consumption, the MAX9880A offers a variety of input and output configurations for design flexibility. The MAX9880A can be combined with an audio subsystem, such as the MAX9877 or MAX9879, for a complete audio solution for portable applications.

===TODOs pentru Rev2.0===
Modul GSM pentru autonomie față de rețelele WiFi

===Note===
<references />
==Legături externe==
* [http://www.m0nka.co.uk/?p=337 TR switch with PIN diodes]
* [https://electronics.stackexchange.com/questions/262020/interfacing-16-antennas-to-a-mux-to-read-an-rfid-tag/306288 Interfacing 16 antennas to a mux to read an RFID TAG]
* [http://www.agder.net/la8ak/d2.htm General CW/SSB technik for 2m]
* [https://hamprojects.info/shari/ SHARI]