2 layers100 × 100 mm
BulkyModem Module
tebl/BulkyModem
My significantly more expensive, slightly less capable version of the Zimodem-hardware. Surfing the BBS-world at a blazing 1200 baud (or faster)!
81 parts11
2 layers100 × 100 mm
BulkyModem Terminal
tebl/BulkyModem11My significantly more expensive, slightly less capable version of the Zimodem-hardware. Surfing the BBS-world at a blazing 1200 baud (or faster)!
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 121
- Pads
- 350
- Tracks, vias
- 679, 51
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 25 Jul 2022
- Updated
- 15 Oct 2024
Overview
BulkyModem Terminal is an open-source printed circuit board by tebl, from the tebl/BulkyModem repository on GitHub. It is a 2-layer board of 100 × 100 mm with 81 parts on 121 nets, routed with 679 tracks and 51 vias.
It is built around the 74HCT244D, MAX232N and 74HCT04D. Its parts include 33 resistors, 12 diodes, 10 capacitors, 6 connectors and 4 ICs. It belongs with the RP2040 boards of this library.
Main components
3
74HCT244D
SO-20-300mil-40℃~+125℃ 13ns@4.5V,50pF 160uA 2 4 4.5V~5.5V 6mA 6mA 74HCT Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
MAX232N
PDIP-160℃~+70℃ 120Kbps 2 2 4.5V~5.5V Transceiver PDIP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
74HCT04D
SO-14-40℃~+125℃ 1 19ns@4.5V,50pF 2V 2uA 3.7V 4.5V~5.5V 400mV 4mA 4mA 6 74HCT 800mV SO-14 Inverters ROHSNexperiaInverters
README
faceplates/BulkyModem FP1/README.mdBulkyModem FP1
This is a faceplate, an inherently optional part of any build as it does not actually contain any active components. This faceplate mounts on the front of the device, and compared to the other options available, it is the shorter version 1. It is compatible with the following main projects:
It currently looks like this:
Footnotes
-
This means that it does not extend below the main PCB when installed, any faceplates installed on the bottom of device will not be covered up. Faceplate FP2 is the longer version of it. ↩
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 2k2 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R6, R8, R10, R12, R13, R14, R23, R24, R32, R33 |
| 5 | 100 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R15, R16, R20, R21 |
| 5 | 1k | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R7, R11, R19 |
| 4 | 100nF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C6, C7, C17, C19 |
| 4 | 1uF | BulkyModem:CP_Radial_D4.0mm_P2.00mm_Custom | C2, C3, C4, C5 |
| 4 | 4k7 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R27, R28, R29, R30 |
| 4 | Mounting | mounting:M3_pin | M1, M2, M3, M4 |
| 2 | 10k | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R22, R31 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D3 |
| 2 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q2, Q3 |
| 2 | 470 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R17 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C9 |
| 1 | 1N5819 | BulkyModem:D_DO-41_SOD81_P10.16mm_Horizontal | D11 |
| 1 | 220 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R26 |
| 1 | 232_SW | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP2 |
| 1 | 2N3904 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1 |
| 1 | 390 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
| 1 | 3V3 | LED_THT:LED_D3.0mm | D13 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | 5V | LED_THT:LED_D3.0mm | D2 |
| 1 | 5V | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D10 |
| 1 | 680 | resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R25 |
| 1 | 74HCT04 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U5 |
| 1 | 74HCT244 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U2 |
| 1 | CTS | LED_THT:LED_D3.0mm | D6 |
| 1 | DC IN | BulkyModem:BARREL_JACK | J1 |
| 1 | DC_5V | BulkyModem:PWR_Specification | SYM1 |
| 1 | DEFAULTS | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx39-2LFS | SW2 |
| 1 | KiCad-Logo2_6mm_SilkScreen | Symbol:KiCad-Logo2_6mm_SilkScreen | G*** |
| 1 | LOGO | artwork:BulkyModem_small | G*** |
| 1 | LOGO | artwork:BulkyModem | G*** |
| 1 | MAX232 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U3 |
| 1 | Module_Panel | BulkyModem:Terminal_Panel | J3 |
| 1 | PS/2_Connector | PS2_mini_din_6:MINI-DIN-6-FULL-SHIELD | J6 |
| 1 | PWR_SW | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Pico | pi_pico:RPi_Pico_SMD_TH | U1 |
| 1 | RESET | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx39-2LFS | SW1 |
| 1 | RS-232 | LED_THT:LED_D3.0mm | D8 |
| 1 | RS-232 | RND_DSUB:DSUB-9_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J2 |
| 1 | RTS | LED_THT:LED_D3.0mm | D7 |
| 1 | RX | LED_THT:LED_D3.0mm | D4 |
| 1 | Speaker | small_buzzer:Buzzer_12x9.5RM7.6 | LS1 |
| 1 | TTL | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J5 |
| 1 | TTL | LED_THT:LED_D3.0mm | D9 |
| 1 | TX | LED_THT:LED_D3.0mm | D5 |
| 1 | VGA | VGA_DSUB:DSUB-15 | J4 |
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Questions
How big is the BulkyModem Terminal PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BulkyModem Terminal use?
81 parts, built around the 74HCT244D, MAX232N and 74HCT04D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the BulkyModem Terminal KiCad files?
From the tebl/BulkyModem repository on GitHub, at the commit this page was made from: the board is BulkyModem Terminal/BulkyModem Terminal.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the BulkyModem Terminal design in my own project?
Its repository states no licence, so its author keeps all rights: ask tebl before reusing the design.