WPI-HPRC/batteryTesterCAD and Code for a custom battery load tester for characterizing batteries used by WPI HPRC.
BatteryTester is an open-source printed circuit board by WPI-HPRC, from the WPI-HPRC/batteryTester repository on GitHub. It is a 2-layer board of 45 × 105 mm with 46 parts on 46 nets, routed with 310 tracks and 102 vias.
It is built around the ATSAMD21E15B-AU, LMV321 and AMS1117-3.3, with the IRF540N among its other parts. Its parts include 17 resistors, 11 capacitors, 4 ICs, 4 connectors and 3 switches. It belongs with the SAM D and SAM boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10k | Resistor_SMD:R_0402_1005Metric | R6, R8, R9, R10, R11 |
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric | C4, C5, C10, C11 |
| 4 | 10uF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C8, C9 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R3, R5 |
| 2 | 200 | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | 22pF | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R16, R17 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R12, R13 |
| 2 | 50k | Resistor_SMD:R_0402_1005Metric | R2, R4 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 2 | LMV321 | Package_TO_SOT_SMD:SOT-23-5 | U2, U3 |
| 2 | OLED_DISPLAY | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J1, J1 |
| 2 | STOP | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2, SW3 |
| 1 | 10m | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 18350 | 1095:BAT_1095 | BT1 |
| 1 | 18650 | 1043P:BAT_1043P | BT2 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 20k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | ATSAMD21E15B-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U4 |
| 1 | CONN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT3 |
| 1 | IRF540N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | PROG | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | START | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
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It measures 45 × 105 mm and has 2 copper layers, 1.6 mm thick.
46 parts, built around the ATSAMD21E15B-AU, LMV321, AMS1117-3.3 and IRF540N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the WPI-HPRC/batteryTester repository on GitHub, at the commit this page was made from: the board is hardware/batteryTester.kicad_pcb and its schematic hardware/batteryTester.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask WPI-HPRC before reusing the design.