Tesseract
About the Tesseract PCB
Tesseract is an open source ESP8266 PCB design by IoTCloudStudio, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 87 components from 39 distinct parts.
Its main chip is the ESP-12F, from the ESP8266 family. Other key parts include the LM2596S-5 and AMS1117-3.3. By type, the board carries 28 resistors, 19 diodes, 15 connectors, 5 transistors, 5 capacitors and 3 ICs.
Main components on the Tesseract
Tesseract bill of materials (BOM)
87 components, 39 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM2596S-5 | TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical | U1 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U2 |
| 1 | ESP-12F | ESP-12E | U3 |
| 5 | MMBT5551L | SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 1 | V-coil1 | PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | IN 12V | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J5 |
| 1 | RX_select | PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | TX_select | PinHeader_1x03_P2.54mm_Vertical | J7 |
| 2 | jumpers salida | PinHeader_1x05_P2.54mm_Vertical | J8, J16 |
| 1 | PROG | PinHeader_2x04_P2.54mm_Vertical | J9 |
| 1 | RTC | PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | V-coil2 | PinHeader_1x03_P2.54mm_Vertical | J12 |
| 1 | Conn_01x06_Pin RTC | PinHeader_1x06_P2.54mm_Vertical | J13 |
| 1 | AUX | TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J14 |
| 1 | READER | TerminalBlock_Phoenix_MKDS-1,5-6-5.08_1x06_P5.08mm_Horizontal | J15 |
| 1 | RFW26 | PinSocket_2x04_P2.54mm_Vertical | J17 |
| 1 | I2C | PinSocket_2x04_P2.54mm_Vertical | J21 |
| 1 | LOCK | TerminalBlock_Phoenix_MKDS-1,5-6_1x06_P5.00mm_Horizontal | J22 |
| 1 | OUT+ | PinHeader_1x01_P2.54mm_Vertical | +5V |
| 1 | IN+ | PinHeader_1x01_P2.54mm_Vertical | +12V |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MF-R110 | Fuse_Bourns_MF-RHT100 | F1 |
| 1 | MF-R050 | Fuse_Bourns_MF-RHT050 | F2 |
| 2 | SANYOU_SRD_Form_C | Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2 |
| 4 | 470KD07 | RV_Disc_D7mm_W4.9mm_P5mm | RV1, RV2, RV3, RV4 |
| 1 | RESET | SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1 |
| 2 | SS34 | DIOM5336X320N | D1, D19 |
| 2 | 1N4148 | D_SOD-323_HandSoldering | D2, D7 |
| 3 | LED | LED_D3.0mm | D3, D4, D8 |
| 6 | 1N5819WS | SOD3716X145N | D5, D13, D14, D15, D16, D17 |
| 6 | SM6T6V8A | DIOM5436X265N | D6, D9, D10, D11, D12, D18 |
| 1 | 33 uH/3.5A | L_12x12mm_H8mm | L1 |
| 2 | 0.1u | C_1206_3216Metric | C1, C5 |
| 2 | 220uF/35V | CP_Elec_10x10 | C2, C3 |
| 1 | 10uF/16V | CP_Elec_4x4.5 | C4 |
| 3 | 330 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R10, R25 |
| 13 | 10K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R4, R5, R6, R8, R11, R12, R13 +5 |
| 4 | 100K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R9, R16, R24 |
| 6 | 100 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R7, R14, R15, R17, R19, R20 |
| 2 | 4.7K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R26, R27 |
Tesseract design files
The KiCad project lives in the IoTCloudStudio/HW_Develop repository on GitHub; these links point at the commit this page was built from.
Tesseract: common questions
What microcontroller does the Tesseract use?
The Tesseract is built around the ESP-12F, from the ESP8266 family.
How big is the Tesseract PCB?
The Tesseract measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Tesseract?
87 components, from 39 distinct parts. The full bill of materials is listed on this page.
Where can I download the Tesseract design files?
From the IoTCloudStudio/HW_Develop repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Tesseract design in my own project?
The repository has no license, so all rights stay with IoTCloudStudio. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Tesseract 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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