Psram addon
About the Psram addon PCB
Psram addon is an open source RISC-V PCB design by Stary2001, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 22.8 × 23.9 mm, with 16 components from 8 distinct parts.
Its main chip is the CH32V003FxPx, from the RISC-V family. Other key parts include the 25LCxxx. By type, the board carries 7 resistors, 3 ICs, 3 capacitors, 2 connectors and 1 diode.
From the project
Here's all my mesh stuff. Everything here is licensed under CERN OHL-P.
Main components on the Psram addon
Psram addon bill of materials (BOM)
16 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CH32V003FxPx | TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 2 | 25LCxxx | SOIC-8_5.3x5.3mm_P1.27mm | U2, U3 |
| 2 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Horizontal | J1, J2 |
| 1 | LED_Small | LED_0603_1608Metric | D1 |
| 3 | C_Small | C_0603_1608Metric | C1, C2, C3 |
| 4 | 10k | R_0603_1608Metric | R1, R2, R4, R5 |
| 1 | R_Small | R_0603_1608Metric | R3 |
| 2 | 5.1k | R_0603_1608Metric | R6, R7 |
Psram addon design files
The KiCad project lives in the Stary2001/my-mesh-nodes repository on GitHub; these links point at the commit this page was built from.
Psram addon: common questions
What microcontroller does the Psram addon use?
The Psram addon is built around the CH32V003FxPx, from the RISC-V family.
How big is the Psram addon PCB?
The Psram addon measures 22.8 × 23.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Psram addon?
16 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Psram addon design files?
From the Stary2001/my-mesh-nodes repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Psram addon design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which Stary2001 chose for the repository.
Can I test firmware for the Psram addon without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RISC-V firmware against it before you order a PCB.
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