Discharge tester
About the Discharge tester PCB
Discharge tester is an open source RISC-V PCB design by c3am, published on GitHub. It is a 2-layer board measuring 60 × 60 mm, with 27 components from 12 distinct parts.
Its main chip is the ch32v003, from the RISC-V family. Other key parts include the LMV358. By type, the board carries 10 resistors, 5 connectors, 4 switches, 4 capacitors, 2 ICs and 2 transistors.
It belongs with the power & battery designs in this gallery.
From the project
A low cost single cell battery capacity tester based on using the ch32v003.
- ADS 1115 for current and voltage sensing - ina181a2 + ref2020(2V Vref) for current sense amplification - ir2101 low+high side mosfet drivers - ceramic capacitors only - the two bidirectional buck-/boost-converters each have 1uH SMD inductors, 200uF on the cell and 66uF capacitance on the ~12V battery side - 0.9" i2c oled screen
Main components on the Discharge tester
Discharge tester bill of materials (BOM)
27 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ch32v003 | QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U1 |
| 1 | LMV358 | SOP-8_3.9x4.9mm_P1.27mm | U2 |
| 2 | Q_NMOS_GDS | TO-252-2 | Q1, Q2 |
| 1 | Conn_01x04 | module-oled-0.96 | J1 |
| 1 | Conn_01x03 | pin-header-2.5mm-3 | J2 |
| 1 | Conn_01x02 | pin-header-2.5mm-2 | J3 |
| 2 | Screw_Terminal_01x02 | screw-terminal-P5.00mm-1x02 | J4, J5 |
| 4 | SW_Push | sw-4.5mm | SW1, SW2, SW3, SW4 |
| 4 | 10u | C_0603_1608Metric | C1, C2, C3, C4 |
| 4 | 2 | R_2512_6332Metric | R1, R2, R3, R4 |
| 4 | 10k | R_0603_1608Metric | R5, R6, R8, R9 |
| 2 | 40k | R_0603_1608Metric | R7, R10 |
Discharge tester design files
The KiCad project lives in the c3am/capacitest repository on GitHub; these links point at the commit this page was built from.
Discharge tester: common questions
What microcontroller does the Discharge tester use?
The Discharge tester is built around the ch32v003, from the RISC-V family.
How big is the Discharge tester PCB?
The Discharge tester measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Discharge tester?
27 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Discharge tester design files?
From the c3am/capacitest repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Discharge tester design in my own project?
The repository has no license, so all rights stay with c3am. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Discharge tester 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.
More boards in capacitest
Similar boards
RISC-VWorkbench-1 Controller
Quchaosheng
160 × 130 mm106 parts8LApache-2.0129
RISC-VKeytartouch
cnlohr
152.5 × 117.5 mm69 parts2LMIT105
RISC-VCh32v003f4u6 with wsled
40.6 × 44.5 mm26 parts2LMIT105
RISC-VFroggyswadge
81.5 × 72.2 mm92 parts2LMIT105
RISC-VNorthPoleCircuit
Janky-Jingle-Crew
150 × 110 mm46 parts4LNo license62
RISC-VOsc sg90-v006
OpenServoCore
20.6 × 9.6 mm26 parts4LApache-2.034