2 layers109.6 × 72 mm
2 layers
Locket
Kreyl/Locket_hwHardware of the Locket
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 78
- Nets
- 58
- Pads
- 276
- Tracks, vias
- 1,503, 204
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 13 Jan 2016
- Updated
- 11 Jul 2022
Overview
Locket is an open-source printed circuit board by Kreyl, from the Kreyl/Locket_hw repository on GitHub. It is a 2-layer board with 78 parts on 58 nets, routed with 1,503 tracks and 204 vias.
It is built around the CC1101RGP, BAT54WS and BLM15AG102SN1, with the MMBT2222 among its other parts. Its parts include 25 capacitors, 13 resistors, 5 switches, 4 inductors and 3 transistors. It belongs with the STM32 boards of this library.
Main components
4
CC1101RGP
QFN-20-EP(4x4)-116dBm -40℃~+85℃ 1.8V~3.6V 12.3mA 12dBm 14.3mA 600Kbps ISM SPI QFN-20-EP(4x4) RF Transceiver ICs ROHSTexas InstrumentsRF Transceiver ICs
BAT54WS
SOD-3231 Independent 100mA 1V@100mA 2uA@25V 30V 600mA SOD-323 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
BLM15AG102SN1
04021 1kΩ@100MHz 300mA 650mΩ ±25% 0402 Ferrite Beads ROHSMurataFerrite Beads
MMBT2222
SOT-231 NPN 1uA 300mV 300mW 400 40V 600mA 6V NPN SOT-23 Bipolar (BJT) ROHSYONGYUTAIBipolar (BJT)
README
README.mdLocket_hw
Hardware for the Locket Project (Russian description, English description)
Locket is the device for LARPs. It has stm32 microcontroller, 868 MHz radio, buttons, vibro, RGB led, beeper and accelerometer. It is placed in nice 3d-printed case. Locket may be used for rather complex gamedesign. It is powered by two AAA batteries.
Repository contains pcb files, antenna information and case model.
Locket has several hardware (and firmware) versions (we call them new lockets, old lockets and ancient lockets). Master is for old lockets and v5 branch is for new. Corresponding firmware project is here https://github.com/Kreyl/Locket_fw/.
Related documents (in russian):
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1u | Capacitors:CAP_0603 | C2, C3, C4, C7, C13, C14, C15, C16, C17, C18, C19, C21 |
| 7 | 10u | Capacitors:CAP_0603 | C1, C8, C9, C10, C20, C22, C25 |
| 4 | 10k | Resistors:RES_0603 | R4, R5, R10, R11 |
| 4 | HOLE_METALLED | PCB:Hole2d2_out3d5mm | HOLE1, HOLE2, HOLE3, HOLE4 |
| 4 | REFPOINT | PCB:REF_POINT_1MM | RP1, RP2, RP3, RP4 |
| 3 | 100R | Resistors:RES_0603 | R1, R2, R3 |
| 3 | BUTTON | BtnsSwitches:BTN_IT1198 | SW2, SW3, SW5 |
| 3 | TESTPOINT | PCB:TESTPOINT_1MM | TP1, TP2, TP3 |
| 2 | 18pF | Capacitors:CAP_0603 | C11, C12 |
| 2 | 1k | Resistors:RES_0603 | R9, R13 |
| 2 | 56k | Resistors:RES_0603 | R8, R12 |
| 2 | BAT54WS | Diodes:SOD323 | D1, D2 |
| 2 | BLM15AG102SN1 | Inductors:IND_0402 | L2, L3 |
| 2 | CONN_1 | PCB:Oval3x1.5 | XL3, XL4 |
| 2 | MMBT2222 | SOT:SOT23-3 | Q2, Q3 |
| 1 | 100k | Resistors:RES_0603 | R7 |
| 1 | 100pF | Capacitors:CAP_0402 | C26 |
| 1 | 10n | Capacitors:CAP_0603 | C5 |
| 1 | 150R | Resistors:RES_0603 | R6 |
| 1 | 1u | Capacitors:CAP_0603 | C6 |
| 1 | 22uH | Inductors:IND_1210_LQH32C | L1 |
| 1 | 27MHz | Quartz:03225C4 | XTAL1 |
| 1 | 3.3pF | Capacitors:CAP_0402 | C23 |
| 1 | 8.2nH | Inductors:IND_0402 | L4 |
| 1 | ANT_PCB_MONO_2PIN | Antennas:Locket5 | ANT1 |
| 1 | BALUN868JOHANSON | Radio:BALUN_JOHANSON868 | BLN1 |
| 1 | BAT_HOLDER | Installation:BATTERY_AAA_X2 | B1 |
| 1 | CC1101 | QFN_DFN:QFN20 | DD3 |
| 1 | CONN_4 | Connectors:PBS-4R | XL2 |
| 1 | CONN_6 | Connectors:PLS-6 | XL1 |
| 1 | DIPx8 | BtnsSwitches:DIP_SMD_X8 | SW1 |
| 1 | LED_RGB 5050 | LEDs:LED_5050 | Q1 |
| 1 | LIS3 | LGA:LGA16_3X3_5_3 | DD2 |
| 1 | Logo | Pictures:Ostranna_12d7_10d1 | Logo1 |
| 1 | MOTOR_NO_CONTACTS | Installation:Motor_no_Contacts | M1 |
| 1 | NCP1400 | SOT:SOT23-5 | DA1 |
| 1 | PS-9627 | Installation:BUZZER_HC0903 | BZ1 |
| 1 | STM32L151CxTx | LQFP_TQFP:LQFP48 | DD1 |
| 1 | SWITCH | BtnsSwitches:SW_SS-1P2T_Housing | SW4 |
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Questions
What parts does the Locket use?
78 parts, built around the CC1101RGP, BAT54WS, BLM15AG102SN1 and MMBT2222. 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.
Where can I download the Locket KiCad files?
From the Kreyl/Locket_hw repository on GitHub, at the commit this page was made from: the board is PCB/Locket.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Locket design in my own project?
Its repository states no licence, so its author keeps all rights: ask Kreyl before reusing the design.