EasyTester RevE
About the EasyTester RevE PCB
EasyTester RevE is an open source RISC-V PCB design by kanengomibako, published on GitHub under the Unlicense license. It is a 2-layer board measuring 45 × 35 mm, with 60 components from 41 distinct parts.
Its main chip is the C42431288, from the RISC-V family. Other key parts include the C14289. By type, the board carries 23 resistors, 11 test points, 7 connectors, 7 capacitors, 5 diodes and 3 switches.
From the project
USB Type-Cコネクターに電源（4.5 ～ 20V）を接続します。電圧測定と抵抗測定は自動的に判別されます。
USB Type-Cコネクターに電源（4.5 ～ 20V）を接続します。電圧測定と抵抗測定は自動的に判別されます。
スイッチを取り付けない場合、下写真のようにCOM端子とスルーホール部分を接触させることでスイッチとして動作させることができます。
- 100kΩ半固定ボリューム（音量調整用、固定抵抗でも可）、圧電スピーカー（PT33-130740HPR等）
※ 長期使用に伴い、ディスプレイの表示が薄くなったり表示が焼き付いたりする可能性があります。交換品として、一般的な0.96インチ単色OLED（制御チップSSD1306）が使用可能です。
導通チェックの抵抗値設定やキャリブレーションを行うことができます。右側のスイッチは、上からA、B、Cとしています。スイッチCを長押しすると設定モードが切り替わります。
- A 短押し：電圧計オン／オフ - B 短押し：抵抗計オン／オフ - C 短押し：ブザー音オン／オフ - A 長押し：設定保存実行 - C 長押し：モード切替
Main components on the EasyTester RevE
EasyTester RevE bill of materials (BOM)
60 components, 41 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C42431288 CH32V006F8U6 | QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U1 |
| 1 | C14289 HT7533-1 | SOT-89-3 | U2 |
| 1 | C15127 AO3401A | SOT-23 | Q1 |
| 1 | 5V | PinHeader_1x01_P2.54mm_Vertical | J1 |
| 1 | GND | PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | VOLT/OHM | tester_pad2 | J3 |
| 1 | COM | tester_pad3 | J4 |
| 1 | 0.96"_OLED_Display_Module | OLED_Display_0.96inch | J6 |
| 1 | C165948 TYPE-C-31-M-12 | USB_C_TYPE-C-31-M-12 | J7 |
| 1 | DC_IN | my_DC_Jack | J8 |
| 1 | Speaker | Buzzer_12x9.5RM7.6 | SP1 |
| 3 | SW | THAF01-NC-R | SW0, SW1, SW2 |
| 1 | SWIO | PinHeader_1x01_P2.54mm_Vertical | TP1 |
| 1 | 3.3V | my_SmallestPad_0-6mmDrill | TP2 |
| 1 | PC7 | my_SmallestPad_0-6mmDrill | TP3 |
| 1 | NRST | my_SmallestPad_0-6mmDrill | TP4 |
| 1 | PD3 | my_SmallestPad_0-6mmDrill | TP5 |
| 1 | PD0 | my_SmallestPad_0-6mmDrill | TP6 |
| 1 | V+ | my_SmallestPad_0-6mmDrill | TP7 |
| 1 | V- | my_SmallestPad_0-6mmDrill | TP8 |
Show 21 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | GND | my_SmallestPad_0-6mmDrill | TP9, TP10 |
| 1 | PD6 | my_SmallestPad_0-6mmDrill | TP12 |
| 4 | C2128 1N4148WS | my_D_SOD-323 | D1, D2, D3, D4 |
| 1 | C2286 LED | LED_0603_1608Metric | D5 |
| 4 | C15849 1u | C_0603_1608Metric | C1, C2, C4, C5 |
| 1 | C1603 220p | C_0603_1608Metric | C3 |
| 1 | C15008 100u | C_1206_3216Metric | C6 |
| 1 | X | C_0603_1608Metric | C8 |
| 1 | C21189 0R | R_0603_1608Metric | R0 |
| 3 | C8218 200R | R_0603_1608Metric | R1, R9, R17 |
| 4 | C4190 2.2k | R_0603_1608Metric | R2, R6, R8, R10 |
| 1 | C31850 22k | R_0603_1608Metric | R3 |
| 1 | C22961 220k | R_0603_1608Metric | R4 |
| 1 | 100k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5 |
| 1 | C22967 27k | R_0603_1608Metric | R7 |
| 1 | C23163 4.7M | R_0603_1608Metric | R11 |
| 1 | C22938 2.2M | R_0603_1608Metric | R12 |
| 2 | C4172 1.5M | R_0603_1608Metric | R13, R14 |
| 1 | C25803 100k | R_0603_1608Metric | R15 |
| 2 | C25804 10k | R_0603_1608Metric | R16, R18 |
| 4 | C25905 5.1k | R_0402_1005Metric | R20, R21, R22, R23 |
EasyTester RevE design files
The KiCad project lives in the kanengomibako/Modules repository on GitHub; these links point at the commit this page was built from.
EasyTester RevE: common questions
What microcontroller does the EasyTester RevE use?
The EasyTester RevE is built around the C42431288, from the RISC-V family.
How big is the EasyTester RevE PCB?
The EasyTester RevE measures 45 × 35 mm, has 2 copper layers and is 1 mm thick.
How many components are on the EasyTester RevE?
60 components, from 41 distinct parts. The full bill of materials is listed on this page.
Where can I download the EasyTester RevE design files?
From the kanengomibako/Modules repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the EasyTester RevE design in my own project?
Yes, under the terms of its Unlicense license, which kanengomibako chose for the repository.
Can I test firmware for the EasyTester RevE 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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