2 layers153.2 × 95.3 mm
Skean
krikun98/Skean
Wireless-first 44-key split keyboard with the Jian's stagger and the Corne's thumb cluster
80 parts68
2 layers26.5 × 42 mm
833iot
ntn888/833iot2cheap E73-2G4M08S1E based IOT board
- Size
- 26.5 × 42 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 50
- Pads
- 138
- Tracks, vias
- 459, 28
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 23 Mar 2022
- Updated
- 12 Nov 2022
Overview
833iot is an open-source printed circuit board by ntn888, from the ntn888/833iot repository on GitHub, published under the MIT licence. It is a 2-layer board of 26.5 × 42 mm with 24 parts on 50 nets, routed with 459 tracks and 28 vias.
It is built around the E73-2G4M08S1E, AP2112K-3.3 and TP4054, with the AO3407 and U254-051T-4BH83-F1S among its other parts. Its parts include 8 resistors, 5 connectors, 4 diodes, 3 ICs and 2 transistors. It belongs with the home automation and IoT boards and the nRF52 and nRF5x boards of this library.
Main components
5E73-2G4M08S1E
SMDIntegrated antenna SMD RF Modules ROHSChengdu Ebyte Elec TechRF Modules
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedTP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery Management
AO3407
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 1V 260pF 30V 37pF 4.1A 75mΩ@4.5V P-Channel ±20V SOT-23 MOSFETs ROHSBORNMOSFETs
U254-051T-4BH83-F1S
SMD-40℃~+85℃ 1 1.8A 10000 times 30V 5.08mm 5P Female Micro-B Surface Mount, Right Angle SMD USB Connectors ROHSXKB ConnectionUSB Connectors
README
README.mdParts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1K | Resistor_SMD:R_0603_1608Metric | R2, R4, R8 |
| 2 | 2M | Resistor_SMD:R_0603_1608Metric | R7, R9 |
| 2 | AO3407 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Conn_01x15_Male | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J4, J5 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 1N5819 | Diode_SMD:D_SOD-323F | D1 |
| 1 | 32768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | X1 |
| 1 | 820K | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | Conn_01x02 | 833iot:connector_bat | J3 |
| 1 | Conn_01x04 | 833iot:connector_swd | J2 |
| 1 | E73-2G4M08S1E | 833iot:E73-2G4M08S1C-52840 | U1 |
| 1 | PURPLE | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | RPROG | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | SW_SPST | Button_Switch_SMD:SW_SPST_TL3342 | SW1 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | U254-051T-4BH83-F1S | 833iot:XKB_U254-051T-4BH83-F1S | J1 |
Questions
How big is the 833iot PCB?
It measures 26.5 × 42 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 833iot use?
24 parts, built around the E73-2G4M08S1E, AP2112K-3.3, TP4054 and AO3407. 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.
Where can I download the 833iot KiCad files?
From the ntn888/833iot repository on GitHub, at the commit this page was made from: the board is 833iot.kicad_pcb and its schematic 833iot.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 833iot design in my own project?
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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