Printer
About the Printer PCB
Printer is an open source PCB design by btb, published on GitHub. It is a 2-layer board measuring 144.1 × 108.6 mm, with 63 components from 31 distinct parts.
Other key parts include the MC6802, 2758, 7400 and 6821. By type, the board carries 34 resistors, 12 transistors, 6 capacitors, 4 ICs, 2 connectors and 2 diodes.
From the project
The Telcon Ambassador was a series of portable terminals by Telcon Industries (who later created the Zorba portable computer).
The Telcon Ambassador was a series of portable terminals by Telcon Industries (who later created the Zorba portable computer).
The info here is primarily derived from my reverse-engineering of a Telcon Ambassador IV which I acquired in very rough shape.
Main components on the Printer
Printer bill of materials (BOM)
63 components, 31 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MC6802 | DIP-40_W15.24mm | U1 |
| 1 | 2758 | DIP-24_W15.24mm | U2 |
| 1 | 7400 | DIP-14_W7.62mm | U3 |
| 1 | 6821 | DIP-40_W15.24mm | U4 |
| 2 | 2N3904 | TO-92_Inline_Wide | Q1, Q3 |
| 10 | 2N3906 | TO-92_Inline_Wide | Q2, Q4, Q5, Q6, Q7, Q8, Q9, Q10 +2 |
| 1 | Crystal_GND3 | Crystal_HC18-U_Horizontal_1EP_style2 | Y1 |
| 1 | GC-880 | CARDEDGE_2x15_P3.96mm | J1 |
| 1 | PRINTER | CardSocket_1x15_P3.96mm_Vertical | J2 |
| 2 | Q2T3725 | DIP-14_W7.62mm | QN1, QN2 |
| 2 | 1N4148 | D_DO-35_SOD27_P12.70mm_Horizontal | D1, D2 |
| 1 | 220uF | CP_Axial_L34.5mm_D20.0mm_P41.00mm_Horizontal | C1 |
| 1 | 10UF | CP_Radial_Tantal_D5.0mm_P5.00mm | C2 |
| 2 | 220NF | C_Rect_L7.0mm_W2.0mm_P5.00mm | C3, C4 |
| 1 | 16uF | CP_Radial_Tantal_D5.0mm_P5.00mm | C5 |
| 1 | 220uF | CP_Radial_D8.0mm_P5.00mm | C6 |
| 10 | 10K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 +2 |
| 1 | 2.2K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R10 |
| 1 | 27K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R11 |
| 1 | 47K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 3.9K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R13, R14 |
| 1 | 2.7K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R15 |
| 1 | 180K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R16 |
| 1 | 2.7K | R_Axial_DIN0309_L9.0mm_D3.2mm_P5.08mm_Vertical | R17 |
| 1 | 220K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R18 |
| 8 | 1k | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R19, R23, R24, R25, R26, R27, R28, R29 |
| 2 | 5.6K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R21, R22 |
| 1 | 150 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R30 |
| 1 | 100 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R31 |
| 2 | 10K | R_Array_SIP10 | RN1, RN2 |
| 1 | 2.7K | R_Array_SIP10 | RN3 |
Printer design files
The KiCad project lives in the btb/Telcon-Ambassador repository on GitHub; these links point at the commit this page was built from.
Printer: common questions
How big is the Printer PCB?
The Printer measures 144.1 × 108.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Printer?
63 components, from 31 distinct parts. The full bill of materials is listed on this page.
Where can I download the Printer design files?
From the btb/Telcon-Ambassador repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Printer design in my own project?
The repository has no license, so all rights stay with btb. Use it as a reference, and ask the author before reusing the design.
