NextTRS
apuder·TRS-IO·kicad/pp/v0.1/NextTRS.kicad_pcb
NextTRS is an open source ESP32 PCB design by apuder: a 2-layer, 145.7 × 107.8 mm board with 93 components (38 distinct parts). It is built around the ESP32-WROVER-B, SN74LVC245AN, ATF16V8B-15PU, 74LVC245. Filed under audio and iot & wireless and power & battery.
TRS-IO gives a TRS-80 Model 1/III online capabilities and provides access to a variety of services. TRS-IO currently features the following capabilities:
TRS-IO gives a TRS-80 Model 1/III online capabilities and provides access to a variety of services. TRS-IO currently features the following capabilities:
1. Access to the RetroStore 2. FreHD emulation 3. Access to files mounted on a SMB share or located on a micro-SD card 4. Access to remote servers via TCP 5. Virtual printer support
The TRS-IO versions for the Model 1 and Model III have some additional features that are explained below. The following sections give an overview of TRS-IO as well as setup instructions. This Github repository contains the complete source code as well as the…

Built around
Parts list
93 components, 38 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-WROVER-B | ESP32-WROVER | U1 |
| 2 | SN74LVC245AN 74LVC245 | SSOP-20_5.3x7.2mm_P0.65mm | U2, U4 |
| 1 | ATF16V8B-15PU 74LVC245 | SSOP-20_5.3x7.2mm_P0.65mm | U3 |
| 2 | 74LVC245 | SSOP-20_5.3x7.2mm_P0.65mm | U5, U6 |
| 2 | 2N7000-G MMBT3904 | SOT-23 | Q1, Q2 |
| 1 | 2N7000-G 2N7002 | SOT-23 | Q3 |
| 2 | 2N7002 | SOT-23 | Q4, Q5 |
| 1 | 302-S501 TRS-80 M3 Pin Header | PinHeader_2x25_P2.54mm_Vertical | J1 |
| 1 | TRS-80 M1 Pin Connector | PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | TRS-80 M3 Edge Connector | EDGE50 | J3 |
| 1 | TRS-80 M1 Edge Connector | TRSEDGE | J4 |
| 2 | Conn_01x06_Male | PinHeader_1x06_P2.54mm_Horizontal | J5, J6 |
| 1 | HDMI_A | HDMI_A_Molex_208658-1001_Horizontal | J7 |
| 1 | Programmer | PinSocket_1x06_P2.54mm_Vertical | J8 |
| 1 | SD_Card | TFP09-2-12B | J9 |
| 1 | AudioJack3 | Jack_3.5mm_CUI_SJ1-3535NG_Horizontal_CircularHoles | J10 |
| 1 | Mini-DIN-6 | minidin_6_ps2_pcb_mount | J11 |
| 1 | USB_B_Micro | USBmicro-B | J12 |
| 1 | Conn_DDR3_Socket | DDR3_socket | Conn1 |
| 1 | 1825910-6 ESP_RESET | SW_PUSH_6mm | SW1 |
Show 18 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1825910-6 PTRS_RESET/STATUS | SW_PUSH_6mm | SW2 |
| 1 | SW_DIP_x04 | SW_DIP_SPSTx04_Slide_6.7x11.72mm_W8.61mm_P2.54mm_LowProfile | SW3 |
| 1 | HV-5RGB60 LED_RKBG | LED_D5.0mm-4_RGB | D1 |
| 4 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D3, D4, D5 |
| 4 | RDER71E104K0P1H03B 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4 |
| 8 | 100N | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6, C7, C8, C13, C17, C21, C23 |
| 1 | 100 | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 5 | 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C11, C16, C18, C19 |
| 1 | 1U | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C12 |
| 2 | 10U | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14, C15 |
| 7 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R37, R38, R39, R40 |
| 8 | 50 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5, R6, R7, R8, R9, R10, R11 |
| 7 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R13, R14, R15, R16, R17, R18 |
| 2 | 12K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19, R20 |
| 12 | 4K7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21, R22, R25, R26, R27, R28, R29, R30 +4 |
| 1 | 270R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23 |
| 1 | 150R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24 |
| 2 | 2K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31, R32 |
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