
Microcharge2
4f48/microcharge
Small Li-Ion battery management development board with charging and protection, 3.3V output.

Nfc ble reader is an open-source printed circuit board by KimSchehl, from the KimSchehl/NFC_Kasse repository on GitHub. It is a 2-layer board of 90 × 70 mm with 16 parts on 27 nets, routed with 57 tracks and 6 vias.
It is built around the DW03C and MK-12D13G4-B. Its parts include 3 resistors, 3 ICs, 1 capacitor and 1 switch. It belongs with the radio and wireless boards and the AVR (ATmega, ATtiny), nRF52 and nRF5x and NXP (LPC, Kinetis, i.MX RT) boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 2 | MountingHole | MountingHole:MountingHole_6.4mm_M6 | H3, H4 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 1µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | Battery_Cell | 18650_Battery_Holder_SMD:BATTERY-SMD_18650-1S-L77.1-W20.7-1 | BT1 |
| 1 | DW03C | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | G*** | kibuzzard-6A8E2C5E | kibuzzard-6A8E2C5E |
| 1 | G*** | kibuzzard-6ACBD38F | kibuzzard-6ACBD38F |
| 1 | G*** | kibuzzard-6A8E2BDD | kibuzzard-6A8E2BDD |
| 1 | MK-12D13G4-B | HOOYA_MK-12D13G4-B:SW-TH_MK-12D13G4-B | SW2 |
| 1 | PN532_NFC_Elechouse_HW147_SPI | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | U2 |
| 1 | ProMicro_NRF52840 | Library:ProMicro_NRF52840 | U3 |

4f48/microcharge
Small Li-Ion battery management development board with charging and protection, 3.3V output.




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It measures 90 × 70 mm and has 2 copper layers, 1.6 mm thick.
16 parts, built around the DW03C and MK-12D13G4-B. 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 KimSchehl/NFC_Kasse repository on GitHub, at the commit this page was made from: the board is nfc-ble-reader_case/nfc-ble-reader/nfc-ble-reader.kicad_pcb and its schematic nfc-ble-reader_case/nfc-ble-reader/nfc-ble-reader.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 KimSchehl before reusing the design.