# RFID lock reference design ## Description This project is an RFID lock circuit, complete with microcontroller (MCU). It features an RC522 RFID reader for identification, controlled by an STM32F103C8T6 MCU. The structure also includes an OLED display, lock circuit, and user interface switches. Designed to operate with a AAA battery power source. #MCU #referenceDesign #simpleEmbedded #stm #project #STM32 #lock #OLED #template #reference-design ## Project Details - **Owner:** vasy_skral - **Created:** 12/13/2023 - **Last Updated:** 3/4/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 38 ## Key Components ### BAT1 — [Battery Holder Keystone 1076 1xAAA](https://www.flux.ai/vasy_skral/battery-holder-keystone-1076-1xaaa~jqn.md) - Manufacturer Part Number: 1076 - Part Type: Connector - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p24.pdf - Manufacturer Name: Keystone Electronics **Pins:** - NEGATIVE [pin -] - POSITIVE [pin +] ### BOOT — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Part Type: Switch - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### EN — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Part Type: Switch - Manufacturer Name: C&K - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### IC1 — [TPS613221ADBVR](https://www.flux.ai/vasyl/tps613221adbvr~58b.md) - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Manufacturer Part Number: TPS613221ADBVR - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps61322 **Pins:** - GND [pin 2] - NC [pin 3] - NC [pin 5] - SW [pin 1] - VOUT [pin 4] ### LOCK — [TerminalBlock-01x02P-3.50mm](https://www.flux.ai/vasy_skral/terminalblock-01x02p-350mm~mcc.md) - Part Type: Connector **Pins:** - P1 [pin 2] - P2 [pin 1] ### OLED1 — [OLED 0.91" 128x32 I2C](https://www.flux.ai/vasy_skral/oled-091-128x32-i2c~kl.md) - Part Type: Display Device **Pins:** - 5V [pin 3] - GND [pin 4] - SCL [pin 2] - SDA [pin 1] ### PROG — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical~jyw.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### U2 — [RC522 RFID](https://www.flux.ai/jecstronic/rc522-rfid~dc6.md) - Manufacturer Part Number: RC522 - Manufacturer Name: Handson Technology - Part Type: Module - Datasheet URL: http://www.handsontec.com/dataspecs/RC522.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - GND [pin 3] - IRQ [pin 4] - MISO/SCL/Tx [pin 5] - MOSI [pin 6] - RST [pin 2] - SCK [pin 7] - SS/SDA/Rx [pin 8] - VCC [pin 1] ### U3 — [STM32F103C8T6](https://www.flux.ai/vasy_skral/stm32f103c8t6~isy.md) - Manufacturer Part Number: STM32F103C8T6 - Datasheet URL: https://www.st.com/resource/en/datasheet/stm32f103cb.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: STMicroelectronics - Part Type: Microcontroller **Pins:** - BOOT0 [pin 44] - NRST [pin 7] - PA0 [pin 10] - PA1 [pin 11] - PA10 [pin 31] - PA11 [pin 32] - PA12 [pin 33] - PA13 [pin 34] - PA14 [pin 37] - PA15 [pin 38] - PA2 [pin 12] - PA3 [pin 13] - PA4 [pin 14] - PA5 [pin 15] - PA6 [pin 16] - PA7 [pin 17] - PA8 [pin 29] - PA9 [pin 30] - PB0 [pin 18] - PB1 [pin 19] - PB10 [pin 21] - PB11 [pin 22] - PB12 [pin 25] - PB13 [pin 26] - PB14 [pin 27] - PB15 [pin 28] - PB2 [pin 20] - PB3 [pin 39] - PB4 [pin 40] - PB5 [pin 41] - PB6 [pin 42] - PB7 [pin 43] - PB8 [pin 45] - PB9 [pin 46] - PC13 [pin 2] - PC14 [pin 3] - PC15 [pin 4] - PD0 [pin 5] - PD1 [pin 6] - VBAT [pin 1] - VDD [pin 24] - VDD [pin 36] - VDD [pin 48] - VDDA [pin 9] - VSS [pin 35] - VSS [pin 47] - VSS [pin 23] - VSSA [pin 8] ### USER — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Manufacturer Name: C&K - Part Type: Switch - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasy_skral/rfid-lock-reference-design~mh7](https://www.flux.ai/vasy_skral/rfid-lock-reference-design~mh7).* --- *Generated from [https://www.flux.ai/vasy_skral/rfid-lock-reference-design~mh7](https://www.flux.ai/vasy_skral/rfid-lock-reference-design~mh7)*