Letovo linefollower
About the Letovo linefollower PCB
Letovo linefollower is an open source STM32 PCB design by BardinPetr, published on GitHub. It is a 2-layer board measuring 159.6 × 109.6 mm, with 116 components from 59 distinct parts.
Its main chip is the STM32F429ZITx, from the STM32 family. Other key parts include the ACS712xLCTR-30A, L7805, LM1117-3.3, IP4220CZ6 and MAX14870_carrier. By type, the board carries 37 capacitors, 28 resistors, 18 connectors, 13 ICs, 10 diodes and 6 switches.
Main components on the Letovo linefollower
Letovo linefollower bill of materials (BOM)
116 components, 59 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ACS712xLCTR-30A | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | L7805 | TO-263-3_TabPin2 | U2 |
| 1 | LM1117-3.3 | TO-252-3_TabPin2 | U3 |
| 1 | IP4220CZ6 | TSOP-6_1.65x3.05mm_P0.95mm | U4 |
| 2 | MAX14870_carrier | MAX14870_Carrier | U5, U6 |
| 1 | ADG726BSUZ | TQFP-48-1EP_7x7mm_P0.5mm_EP3.5x3.5mm | U7 |
| 1 | M_R | JST_SH_BM06B-SRSS-TB_1x06-1MP_P1.00mm_Vertical | U8 |
| 1 | M_L | JST_SH_BM06B-SRSS-TB_1x06-1MP_P1.00mm_Vertical | U9 |
| 1 | Troyka-IMU10 | Troyka_IMU | U10 |
| 1 | AltIMU-10v5 | AltIMU10_v5 | U11 |
| 1 | UM7 | JST_SH_BM05B-SRSS-TB_1x05-1MP_P1.00mm_Vertical | U12 |
| 1 | STM32F429ZITx | LQFP-144_20x20mm_P0.5mm | U13 |
| 1 | 8MHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 32MHz | Crystal_HC49-4H_Vertical | Y2 |
| 1 | BATT | Soldered_pad_01x02_4x6 | J1 |
| 2 | 3v3 | PinSocket_1x02_P2.54mm_Vertical | J2, J3 |
| 1 | 5v | PinSocket_1x02_P2.54mm_Vertical | J4 |
| 1 | SWD+UART | PinSocket_2x05_P2.54mm_Vertical | J5 |
| 1 | SPI2 | PinSocket_1x06_P2.54mm_Vertical | J6 |
| 2 | I2C | PinSocket_1x04_P2.54mm_Vertical | J7, J10 |
Show 39 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESC | Soldered_pad_01x02_4x6 | J8 |
| 1 | ESC_CTRL | PinSocket_1x02_P2.54mm_Vertical | J9 |
| 1 | BT_module | PinSocket_1x04_P2.54mm_Vertical | J11 |
| 1 | USB_B_Micro | USB_Micro-B_Amphenol_10103594-0001LF_Horizontal | J12 |
| 1 | Conn_02x20_Odd_Even | PinSocket_2x20_P2.54mm_Vertical | J13 |
| 1 | Micro_SD_Card_Det | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J14 |
| 1 | Conn_linesens_Female | SolderedPad_1x11_P2.54 | J15 |
| 1 | Conn_linesens_Male | SolderedPad_1x11_P2.54 | J16 |
| 1 | ESC_MOTOR | Soldered_pad_01x03_4x5 | J21 |
| 1 | MOTOR_ESC | Soldered_pad_01x03_4x5 | J22 |
| 1 | MF-SM250 | MF-MSMF-A | F1 |
| 1 | MF-MSMF050 | MF-MSMF-A | F2 |
| 1 | uBTN_0 | SW_SPST_FSMSM | SW1 |
| 1 | uBTN_1 | SW_SPST_FSMSM | SW2 |
| 1 | uBTN_2 | SW_SPST_FSMSM | SW3 |
| 1 | uBTN_3 | SW_SPST_FSMSM | SW4 |
| 1 | SW_DIP_x04 | SW_DIP_SPSTx04_Slide_KingTek_DSHP04TS_W7.62mm_P1.27mm | SW5 |
| 1 | RST | SW_SPST_FSMSM | SW6 |
| 5 | LED | LED_0603_1608Metric | D1, D2, D8, D9, D10 |
| 2 | 1N4001 | D_DO-41_SOD81_P10.16mm_Horizontal | D3, D4 |
| 2 | stps2l40u | D_SMB | D5, D7 |
| 1 | LED_RGB | LED_RGB_5050-6 | D6 |
| 2 | 10uF | CP_Elec_5x5.3 | C1, C2 |
| 1 | 1nF | C_0805_2012Metric | C3 |
| 21 | 100nF | C_0805_2012Metric | C4, C5, C6, C7, C8, C16, C17, C18 +13 |
| 4 | 100uF | CP_Elec_6.3x5.4 | C9, C10, C35, C36 |
| 2 | 22pF | C_0805_2012Metric | C12, C13 |
| 2 | 2.2uF | C_0805_2012Metric | C14, C15 |
| 1 | 4.7uF | C_0805_2012Metric | C30 |
| 2 | 1uF | C_0805_2012Metric | C31, C34 |
| 2 | 6.8pF | C_0805_2012Metric | C32, C33 |
| 8 | 10k | R_0805_2012Metric | R1, R2, R3, R4, R19, R20, R23, R24 |
| 8 | 510r | R_0805_2012Metric | R5, R8, R11, R12, R13, R26, R27, R28 |
| 1 | 1k | R_0805_2012Metric | R6 |
| 1 | 1.8k | R_0805_2012Metric | R7 |
| 1 | 20k | R_0805_2012Metric | R9 |
| 1 | 5.6k | R_0805_2012Metric | R10 |
| 6 | 47k | R_0805_2012Metric | R14, R15, R16, R17, R18, R25 |
| 2 | 22r | R_0805_2012Metric | R21, R22 |
Letovo linefollower design files
The KiCad project lives in the BardinPetr/letovo-linefollower repository on GitHub; these links point at the commit this page was built from.
- Layoutlinefollower.kicad_pcb
Letovo linefollower: common questions
What microcontroller does the Letovo linefollower use?
The Letovo linefollower is built around the STM32F429ZITx, from the STM32 family.
How big is the Letovo linefollower PCB?
The Letovo linefollower measures 159.6 × 109.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Letovo linefollower?
116 components, from 59 distinct parts. The full bill of materials is listed on this page.
Where can I download the Letovo linefollower design files?
From the BardinPetr/letovo-linefollower repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Letovo linefollower design in my own project?
The repository has no license, so all rights stay with BardinPetr. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Letovo linefollower without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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