LLTB
About the LLTB PCB
LLTB is an open source RISC-V PCB design by wrickert, published on GitHub. It is a 2-layer board measuring 59.7 × 63.4 mm, with 8 components from 6 distinct parts.
Its main chip is the CH585M, from the RISC-V family. By type, the board carries 4 diodes, 1 IC, 1 connector, 1 capacitor and 1 resistor.
Main components on the LLTB
LLTB bill of materials (BOM)
8 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CH585M CH32V003FxPx | TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | CONN_01X02 Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical_SMD | J1 |
| 1 | SS14 LED_Small | T776-ReverseMountLED | D1 |
| 3 | LED_Small | T776-ReverseMountLED | D2, D3, D4 |
| 1 | 100P C_Small | C_0805_2012Metric | C1 |
| 1 | R_Pack04 | R_Array_Convex_4x0603 | RN1 |
LLTB design files
The KiCad project lives in the wrickert/UntitledElectronics repository on GitHub; these links point at the commit this page was built from.
LLTB: common questions
What microcontroller does the LLTB use?
The LLTB is built around the CH585M, from the RISC-V family.
How big is the LLTB PCB?
The LLTB measures 59.7 × 63.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the LLTB?
8 components, from 6 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 LLTB design files?
From the wrickert/UntitledElectronics repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the LLTB design in my own project?
The repository has no license, so all rights stay with wrickert. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the LLTB 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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