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STD Teensy SDR Display Audio Processor
License: TAPR Open Hardware License
Mode: Editors' pick
Cloned from Teensy SDR display processor
- 1
Update time：
2023-08-02 03:09:19
Creation time：
2022-03-30 02:27:14
Description
This PCB is part of a larger project, the KeithSDR. This PCB mounts directly to the back of either the RA8875 based ER-TFTM043A2-7R, 800x480, 4.3" display or the RA8876 based ER-TFTM070-6, 1024x600, 7" display, and forms the main processor and display for a software defined radio. This board is supported with software by Mike, K7MDL on his github page.
- 3 A/B rotary A/B encoder inputs with switch
- I2C Header
- The K7MDL code currently supports I2C LCD's and DuPPa I2CEncoder V2.1.
- Hardware serial I/O header for GPS or other
- RX/TX from Teensy 4.1 Serial6, + one additional I/O pin. Could be used for GPIO
- 8 GPIO pins on 2x8 pin header
- Ethernet connector
- USB Host port connector
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | BOM_Supplier | BOM_Manufacturer Part |
|---|---|---|---|---|---|---|
| 1 | CR2032-BS-6-1 | B1 | BAT-TH_CR2032-BS-6-1 | 1 | Digi-Key | 1060TR |
| 2 | 330uF | C1,C4 | CAP-SMD_L7.3-W6.1 | 2 | Digi-Key | TAJV226K050RNJ |
| 3 | 100nF | C2,C3,C5,C6,C7,C8,C9,C10,C11,C12,C13 | C0805 | 11 | Digi-Key | ECP-U1C104MA5 |
| 4 | ENC1 | CN1 | CONN-TH_B4B-XH-A-BK-LF-SN | 1 | Digi-Key | B4B-XH-A(LF)(SN) |
| 5 | ENC2 | CN2 | CONN-TH_B5B-XH-A-BK-LF-SN | 1 | Digi-Key | B5B-XH-A-BK(LF)(SN) |
| 6 | ENC3 | CN3 | CONN-TH_B5B-XH-A-BK-LF-SN | 1 | Digi-Key | B5B-XH-A-BK(LF)(SN) |
| 7 | I2C Enc | CN4 | CONN-TH_B5B-XH-A-BK-LF-SN | 1 | Digi-Key | B5B-XH-A-BK(LF)(SN) |
| 8 | GPS | CN6 | CONN-TH_B5B-XH-A-BK-LF-SN | 1 | Digi-Key | B5B-XH-A-BK(LF)(SN) |
| 9 | DC IN | CN7 | CONN-TH_3P-P2.50_B3B-XH-A-LF-SN | 1 | Digi-Key | B3B-XH-A(LF)(SN) |
| 10 | 1N4004F | D1 | SMAF_L3.5-W2.6-LS4.7-RD | 1 | Digi-Key | S1JMHRSG |
| 11 | 2k4 | R1,R2 | R0805 | 2 | Digi-Key | RNCF0805DTE2K40 |
| 12 | 10k | R3,R4 | R0805 | 2 | Digi-Key | RNCP0805FTD10K0 |
| 13 | Line_IN | U1 | CONN-TH_3P-P2.50_B3B-XH-AM-LF-SN | 1 | Digi-Key | B3B-XH-A(LF)(SN) |
| 14 | TEENSY 4.0 AUDIO ADAPTER | U2 | TEENSY 4.0 AUDIO | 1 | Digi-Key | New SchematicLib |
| 15 | RA8875 - 40 Pin Interface | U3 | HEADER 40 PIN ER-TFTM043A2-7R | 1 | Buydisplay.com | ER-TFTM050A2 |
| 16 | TEENSY4.1 JRS ALL PINS | U4 | TEENSY4.1 - KB | 1 | Digi-Key | Teensy4.1 |
| 17 | Line_OUT | U5 | CONN-TH_3P-P2.50_B3B-XH-AM-LF-SN | 1 | Digi-Key | B3B-XH-A(LF)(SN) |
| 18 | Ethernet / USB Jack | U6 | 0821-1X1T-36-F | 1 | Digi-Key | 0821-1X1T-36-F |
| 19 | GPIO | U7 | IDC-TH_5103308-3 | 1 | Digi-Key | SBH11-PBPC-D08-ST-BK |
| 20 | Mic Input | U8 | CONN-TH_3P-P2.50_B3B-XH-AM-LF-SN | 1 | Digi-Key | B3B-XH-A(LF)(SN) |
| 21 | LM7805AA | U9 | LM7805 | 1 | Digi-Key | NCV7805BTG |
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