Control board
About the Control board
Control board is an open source ESP8266 PCB design by MahmoudNasser9, published on GitHub. It is a 2-layer board measuring 146 × 118.2 mm, with 115 components from 66 distinct parts.
Its main chip is the ESP-12F, from the ESP8266 family. Other key parts include the AT45DB321E-SHF-T, LM2576HVS-5, LoRa, Wifi and STM32F103C8Tx. By type, the board carries 50 resistors, 13 ICs, 13 diodes, 12 capacitors, 9 connectors and 9 switches.
It belongs with the iot & wireless designs in this gallery.
Main components on the Control board
Control board bill of materials (BOM)
115 components, 66 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AT45DB321E-SHF-T | SOIC-8_5.3x5.3mm_P1.27mm | U1 |
| 1 | LM2576HVS-5 | TO-263-5_TabPin3 | U2 |
| 1 | LoRa | LoRa | U3 |
| 1 | Wifi | wifi | U4 |
| 1 | STM32F103C8Tx | LQFP-48_7x7mm_P0.5mm | U6 |
| 1 | RTC_DS3234 | PinSocket_1x07_P2.54mm_Vertical | U7 |
| 1 | DS3232SN-T&R | RTC_3232 | U8 |
| 1 | OLED | PinSocket_1x04_P2.54mm_Vertical | U9 |
| 1 | SP3485EN | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | Debug | PinSocket_1x04_P2.54mm_Vertical | U11 |
| 1 | PCA9554AD,118 PCA9554AD_118 | PCA955 | U12 |
| 1 | LM317DCY | LM3.3V | U13 |
| 1 | ESP-12F | ESP-12E | U14 |
| 1 | 8MHZ | Crystal_HC18-U_Vertical | Y1 |
| 1 | KEYPAD | PinHeader_1x08_P2.54mm_Vertical | J1 |
| 1 | UART_EnergyMeter | RC4 | J2 |
| 1 | Power_IN | RC2 | J3 |
| 1 | SPI_conn | RC8 | J4 |
| 1 | Triac Control | RC8 | J5 |
| 1 | MDB | MDB | J6 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | UART_wifi | PinHeader_1x04_P2.54mm_Vertical | J7 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J8 |
| 1 | RS485 | RC2 | J9 |
| 1 | Battery20mm | Battery_Panasonic_CR2032-HFN_Horizontal_CircularHoles | BT1 |
| 1 | RX2 | PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | TX2 | PinHeader_1x02_P2.54mm_Vertical | JP4 |
| 1 | RESET | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1 |
| 1 | Button1 | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW2 |
| 1 | Button2 | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW3 |
| 1 | KEY_flash | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW4 |
| 1 | wifi_reset | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW5 |
| 1 | Button3 | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW6 |
| 1 | Button4 | SW_PUSH_6mm | SW7 |
| 1 | Button5 | SW_PUSH_6mm | SW8 |
| 1 | Button6 | SW_PUSH_6mm | SW9 |
| 2 | BCX17 | BCX17 | T1, T2 |
| 2 | 250-120U | Fuse_BelFuse_0ZRE0005FF_L8.3mm_W3.8mm | TH1, TH2 |
| 2 | 1N4007 | D_SMA | D1, D10 |
| 1 | 1N5822 | D_SMA | D2 |
| 5 | LED | LED_0805_2012Metric | D3, D4, D8, D9, D11 |
| 2 | 6KE6.8CA | D_SMA | D5, D6 |
| 1 | DF02S | Diode_Bridge_OnSemi_SDIP-4L | D7 |
| 1 | LED1 | LED_0805_2012Metric | D12 |
| 1 | LE2 | LED_0805_2012Metric | D13 |
| 1 | 100uH/3A | L_12x12mm_H8mm | L1 |
| 3 | 104 | C_1206_3216Metric | C1, C6, C7 |
| 1 | 100U/50V | C_Radial_D10.0mm_H12.5mm_P5.00mm | C2 |
| 1 | 1000U/16V | C_Radial_D10.0mm_H12.5mm_P5.00mm | C3 |
| 2 | 47UF/16V | CP_Elec_5x5.3 | C4, C5 |
| 2 | 22pF | C_1206_3216Metric | C8, C9 |
| 2 | 100nF | C_1206_3216Metric | C10, C11 |
| 1 | 100uF | C_1206_3216Metric | C12 |
| 3 | 103 | R_1206_3216Metric | R1, R2, R3 |
| 1 | 330 | R_1206_3216Metric | R4 |
| 5 | 12K | R_1206_3216Metric | R5, R41, R42, R43, R44 |
| 3 | 150 | R_1206_3216Metric | R6, R46, R47 |
| 5 | 4.7K | R_1206_3216Metric | R7, R8, R32, R35, R40 |
| 20 | 10K | R_1206_3216Metric | R9, R10, R11, R12, R13, R14, R16, R17 +12 |
| 5 | 470 | R_1206_3216Metric | R15, R30, R36, R37, R39 |
| 1 | 120 | R_1206_3216Metric | R21 |
| 1 | 390 | R_1206_3216Metric | R27 |
| 1 | 39 | R_1206_3216Metric | R28 |
| 1 | 680 | R_1206_3216Metric | R29 |
| 1 | 2K | R_1206_3216Metric | R31 |
| 2 | 20 | R_1206_3216Metric | R33, R34 |
| 1 | 0 | R_1206_3216Metric | R38 |
Control board design files
The KiCad project lives in the MahmoudNasser9/Smartmeter repository on GitHub; these links point at the commit this page was built from.
Control board: common questions
What microcontroller does the Control board use?
The Control board is built around the ESP-12F, from the ESP8266 family.
How big is the Control board?
The Control board measures 146 × 118.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Control board?
115 components, from 66 distinct parts. The full bill of materials is listed on this page.
Where can I download the Control board design files?
From the MahmoudNasser9/Smartmeter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Control board design in my own project?
The repository has no license, so all rights stay with MahmoudNasser9. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Control board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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