AdamPicoPSU
About the AdamPicoPSU PCB
AdamPicoPSU is an open source PCB design by aotta, published on GitHub. It is a 2-layer board measuring 80.9 × 39.5 mm, with 11 components from 11 distinct parts.
Other key parts include the L7905. By type, the board carries 5 test points, 2 connectors, 1 IC, 1 switch, 1 diode and 1 capacitor.
From the project
Yet another Coleco Adam PicoPSU, cheap and compact
It use a 3 amp 12v regulated PSU for input, and a PICOPSU 20 pin for generate the additional -12v and -5v. A lm7905 converts the -12v to the needed -5v too. In the BOM also a 1n4148 diode, a 10uf caps, the barrell for input the 12v plug and a 6 pin 7x7 push button for the power on/off, and a db-9 pin for connecting to the ADAM. Further details in the kicad project and in the "jlcpcb/production_files" subfolder
Main components on the AdamPicoPSU
AdamPicoPSU bill of materials (BOM)
11 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L7905 | TO-220-3_Vertical | U1 |
| 1 | Barrel_Jack_Switch | BarrelJack_Horizontal | J1 |
| 1 | ATX-20 | Molex_Mini-Fit_Jr_5569-20A2_2x10_P4.20mm_LargeHoles | J4 |
| 1 | TL2230EEF140 | SW_TL2230EEF140 | S1 |
| 1 | +12VL/Brown | TestPoint_THTPad_3.0x3.0mm_Drill1.5mm | TP1 |
| 1 | +12VI/Red | TestPoint_THTPad_3.0x3.0mm_Drill1.5mm | TP2 |
| 1 | +5V/Orange | TestPoint_THTPad_3.0x3.0mm_Drill1.5mm | TP3 |
| 1 | -5V/Yellow | TestPoint_THTPad_3.0x3.0mm_Drill1.5mm | TP4 |
| 1 | GND/Green | TestPoint_THTPad_3.0x3.0mm_Drill1.5mm | TP5 |
| 1 | D_Schottky | D_DO-34_SOD68_P7.62mm_Horizontal | D1 |
| 1 | 10UF 10uf | CP_Radial_D6.3mm_P2.50mm | C1 |
AdamPicoPSU design files
The KiCad project lives in the aotta/AdamPicoPSU repository on GitHub; these links point at the commit this page was built from.
AdamPicoPSU: common questions
How big is the AdamPicoPSU PCB?
The AdamPicoPSU measures 80.9 × 39.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AdamPicoPSU?
11 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the AdamPicoPSU design files?
From the aotta/AdamPicoPSU repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the AdamPicoPSU design in my own project?
The repository has no license, so all rights stay with aotta. Use it as a reference, and ask the author before reusing the design.