cva68/ESPBreadboardRobot2Peripheral and breakout board for the ESP-32, with firmware designed for use with Microsoft MakeCode
ENEL200Group01 is an open-source printed circuit board by cva68, from the cva68/ESPBreadboardRobot repository on GitHub, published under the MIT licence. It is a 2-layer board of 87.6 × 83.8 mm with 88 parts on 76 nets, routed with 510 tracks and 51 vias.
It is built around the ZXBM5210-S, 74HC595 and LM1117T-3.3, with the LM338T, BSH205G2 and SR240 among its other parts. Its parts include 30 diodes, 18 resistors, 13 capacitors, 13 connectors and 6 ICs.
A device designed to mount to a breadboard to breakout the ESP32-C3 devboard pins, add an LED matrix, dual motor drivers, photoresistor inputs for line following, and two buttons. Designed to mimic (some) functionality of the BBC micro:bit + Kitronic Motor Driver Board combo currently used by Lincoln High School for teaching electronics, at a lower cost and in a more convenient package.
The software is designed to support exporting blocks from MakeCode directly into main.py. Basic, LED, Input and Motor blocks are currently supported. src/ and lib/ have the required files to enable this.
The schematic and PCB designs are included in /hardware.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 25 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +9 |
| 7 | 100n | Capacitor_THT:C_Rect_L4.6mm_W3.0mm_P2.50mm_MKS02_FKP02 | C2, C3, C4, C5, C6, C7, C8 |
| 5 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R10, R11, R12, R13, R14 |
| 5 | BSH205 | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q2, Q3, Q4, Q5 |
| 4 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R3, R4, R5, R6 |
| 4 | SR240 | Diode_THT:D_DO-35_SOD27_P2.54mm_Vertical_AnodeUp | D1, D2, D3, D4 |
| 2 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C11, C13 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R7, R8 |
| 2 | 10u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C9, C10 |
| 2 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R15, R16 |
| 2 | 3V3 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J12, J13 |
| 2 | 3k3 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R9, R17 |
| 2 | 74HC595 | Package_SO:SOIC-16_4.55x10.3mm_P1.27mm | U4, U5 |
| 2 | ESP | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J6, J7 |
| 2 | ESP_PT | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J14, J15 |
| 2 | ZXBM5210-S | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3 |
| 1 | 100u | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C1 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C12 |
| 1 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R2 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R18 |
| 1 | 820 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R1 |
| 1 | BTN_A | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW3 |
| 1 | BTN_B | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW5 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | LEAF_L | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | LEAF_R | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | LED | LED_THT:LED_D5.0mm | D5 |
| 1 | LM1117T-3.3 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U6 |
| 1 | LM338T | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U1 |
| 1 | MOTOR-L | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J4 |
| 1 | MOTOR-R | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J5 |
| 1 | PHOTORESISTOR_1 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | PHOTORESISTOR_2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | SW_SPDT | Button_Switch_THT:SW_Slide-03_Wuerth-WS-SLTV_10x2.5x6.4_P2.54mm | SW2 |
It measures 87.6 × 83.8 mm and has 2 copper layers, 1.6 mm thick.
88 parts, built around the ZXBM5210-S, 74HC595, LM1117T-3.3 and LM338T. 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 cva68/ESPBreadboardRobot repository on GitHub, at the commit this page was made from: the board is hardware/KiCad/ENEL200Group01.kicad_pcb and its schematic hardware/KiCad/ENEL200Group01.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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