2 layers145 × 108 mm
2 layers76 × 76 mm
Temperature monitor for grain bins.
- Size
- 76 × 76 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 49
- Pads
- 171
- Tracks, vias
- 322, 46
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 23 Nov 2020
- Updated
- 8 May 2026
Overview
TM13 is an open-source printed circuit board by SK21, from the SK21/TemperatureMonitor repository on GitHub. It is a 2-layer board of 76 × 76 mm with 49 parts on 49 nets, routed with 322 tracks and 46 vias.
It is built around the CH340C, ESP-07 and DS2482S-100+T&R, with the AZ1117CD, DS9503P and PCA9306DCUR among its other parts. Its parts include 13 resistors, 10 capacitors, 7 ICs, 4 transistors and 4 connectors. It belongs with the ESP8266 boards of this library.
Main components
11
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
ESP-07
SMD-16P,21.2x16mm-40℃~+125℃ -98dBm 19.5dBm 2.4GHz 3.3V 802.11b/g/n ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART、I2C、HSPI、I2S SMD-16P,21.2x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
DS2482S-100+T&R
SOIC-8-40℃~+85℃ 3.3V、5V 750uA I2C SOIC-8 Interface - Specialized ROHSMaxim Integrated (Analog Devices)Interface - Specialized
AZ1117CD
800mA LDO Voltage RegulatorDiodes IncorporatedUncategorised
DS9503P
-- ESD and Surge Protection (TVS/ESD)Maxim Integrated (Analog Devices)ESD And Surge Protection (TVS/ESD)
PCA9306DCUR
VSSOP-8-40℃~+85℃ 1 1.2V~3.3V 1.8V~5.5V 2 Auto Direction Detection Bidirectional Push-Pull、Open-drain VSSOP-8 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsBC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
XF-508P-A
插件30A 500V Plugin Fuseholders ROHSXFCNFuseholders
SMDRI127-330MT
SMD,12.3x12.3mm33uH 3A 5.5A 65mΩ Magnetic Shielded Inductor ±20% SMD,12.3x12.3mm Power Inductors ROHSSXNPower Inductors
SS36
SMA(DO-214AC)-55℃~+125℃ 3A 500uA@60V 60V 700mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdTemperatureMonitor
Temperature Monitor reads temperatures from DS18B20 sensors in grain bins. It consists of a server and multiple clients (controlboxes). The server is installed on a PC on the LAN. Each controlbox sends data over wifi to the server. On startup if a network connection can't be made a web page is started at 192.168.4.1 .
Hookup Schematic:
TMarduino can use a DS2482 1-Wire Master. It is a device to connect to 1-Wire networks for improved performance. A DS2482 breakout is available at https://www.artekit.eu/products/breakout-boards/io/ak-ds2482s-100/
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole:MountingHole_3.2mm_M3 | , , , | |
| 4 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R2, R5, R6 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C7 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric | R11, R13 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C5, C8 |
| 2 | 2.2K | Resistor_SMD:R_0603_1608Metric | R7, R12 |
| 2 | 217 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 341 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Conn_01x03_Male | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2, J3 |
| 2 | KF142V-5.0-4P | MyFootprints:KF142V-5.08-4P | KF1, KF2 |
| 1 | 105133-0011 | MyFootprints:MOLEX_105133-0011 | J5 |
| 1 | 1N4007 | Diode_SMD:D_SMA | D2 |
| 1 | 200K | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 330uF | Capacitor_SMD:CP_Elec_10x10.5 | C10 |
| 1 | 470uF | Capacitor_SMD:CP_Elec_10x10.5 | C9 |
| 1 | AZ1117 | MyFootprints:SOT230P700X180-4N | IC2 |
| 1 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | BSS841 | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | Barrel_Jack_Switch | MyFootprints:BarrelJack_Wuerth_6941xx301002 | J4 |
| 1 | C2935469 | MyFootprints:Fuse_Holder_C2935469 | F1 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | DS2482S-100+T&R | MyFootprints:21-0041B_8_MXM | U3 |
| 1 | DS9503P | MyFootprints:TSO6C | U4 |
| 1 | ESP-07 | MyFootprints:ESP-07S | U1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | PCA9306DCUR | MyFootprints:PCA9306DCUR | IC1 |
| 1 | SMDRI127-330MT | MyFootprints:TMPA1265SP-101MN-D | L1 |
| 1 | SS36 | MyFootprints:SMA(DO-214AC) | D3 |
| 1 | XL2596 | MyFootprints:TO263-5L | IC3 |
Questions
How big is the TM13 PCB?
It measures 76 × 76 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TM13 use?
49 parts, built around the CH340C, ESP-07, DS2482S-100+T&R and AZ1117CD. 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 TM13 KiCad files?
From the SK21/TemperatureMonitor repository on GitHub, at the commit this page was made from: the board is PCBs/TM13/TM13.kicad_pcb and its schematic PCBs/TM13/TM13.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TM13 design in my own project?
Its repository states no licence, so its author keeps all rights: ask SK21 before reusing the design.
Similar boards
- 2 layers165 × 127 mm
YF1
SK21/YieldFlo
YieldFlo is a combine yield and moisture monitoring system that works alongside AgOpenGPS. A Windows desktop app records yield rate, moisture, and GPS position continuously while harvesting, and produces spatial yield…
60 parts5GPL-3.0 - 2 layers157 × 88 mm
RC17
lansalot/AOG_Dev
Like AgOpenGPS but not. This version is constantly under development.
111 partsGPL-3.0 - 2 layers165 × 127 mm
- 2 layers198.8 × 164.8 mm
- 2 layers100 × 100 mm
Hour meter board microfit can handroute
ilomon10/embedded-totalizer-hour-meter
ESP32 engine hour meter & totalizer: firmware, SensorFrame protocol, Node host tools, KiCad PCB and a Deno device simulator
152 parts - 2 layers130 × 164 mm
- 2 layers65 × 56 mm
