4 layers62.8 × 97.5 mm
2 layers66.5 × 18.7 mm
Telsys
IMbackK/TelsysHWTelsys is a small integrated wireless bluetooth low energy measurement amplifier and digitizer. Its primary intention is the use with strain gauges in sensor integrated structures.
- Size
- 66.5 × 18.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 43
- Pads
- 237
- Tracks, vias
- 731, 75
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 3 Nov 2021
- Updated
- 3 Nov 2021
Overview
Telsys is an open-source printed circuit board by IMbackK, from the IMbackK/TelsysHW repository on GitHub. It is a 2-layer board of 66.5 × 18.7 mm with 65 parts on 43 nets, routed with 731 tracks and 75 vias.
It is built around the LM324AD. Its parts include 23 resistors, 18 capacitors, 6 connectors, 5 ICs and 3 inductors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
1README
README.mdTelsys Hardware
Telsys is a small integrated wireless bluetooth low energy measurement amplifier and digitizer. Its primary intention is the use with strain gauges in sensor integrated structures. Sutch as the strain reporting pipe seen below. The firmware for the nrf52 used in this design can be found here: https://github.com/IMbackK/TelsysFW. A GUI client for reciveing the data as well as to examine the data can be found here: https://github.com/IMbackK/TelsysMaster
These are kicad files detailing the shematic and board design of the Telsys device. Kicad can be found here: https://www.kicad.org/
License: gpl-3.0 only, see license/GPL.txt
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100K | Resistors_SMD:R_0603 | R3, R4, R5, R6, R14, R15 |
| 6 | 1uF | Capacitors_SMD:C_0603 | C5, C6, C8, C13, C18, C19 |
| 4 | 12pF | Capacitors_SMD:C_0603 | C9, C10, C11, C12 |
| 3 | 10K | Resistors_SMD:R_0603 | R13, R16, R23 |
| 3 | R | Resistors_SMD:R_1210_HandSoldering | R1, R2, R7 |
| 2 | 10M | Resistors_SMD:R_0603 | R24, R25 |
| 2 | 10nF | Capacitors_SMD:C_1206 | C2, C3 |
| 2 | 1K | Resistors_SMD:R_0603 | R18, R19 |
| 2 | 5.6K | Resistors_SMD:R_0603 | R12, R17 |
| 2 | JPC | Buttons_Switches_SMD:SW_DIP_x1_W5.08mm_Slide_Copal_CHS-A | JP3, JP4 |
| 2 | Jumper_NO_Small | Buttons_Switches_SMD:SW_DIP_x1_W5.08mm_Slide_Copal_CHS-A | JP1, JP2 |
| 1 | 0.47uF | Capacitors_SMD:C_0402_NoSilk | C4 |
| 1 | 0.8pF | Capacitors_SMD:C_0201 | C17 |
| 1 | 100nF | Capacitors_SMD:C_0603 | C14 |
| 1 | 100pF | Capacitors_SMD:C_0603 | C15 |
| 1 | 10uF | Capacitors_SMD:C_1206 | C7 |
| 1 | 10uH | Resistors_SMD:R_0805 | L3 |
| 1 | 13nH | Resistors_SMD:R_0603 | L2 |
| 1 | 150K | Resistors_SMD:R_0603 | R10 |
| 1 | 1uf | Capacitors_SMD:C_0603 | C16 |
| 1 | 3.9nH | Resistors_SMD:R_0402 | L1 |
| 1 | 300K | Resistors_SMD:R_0603 | R11 |
| 1 | 32.768KHz | Capacitors_SMD:C_0805 | Y1 |
| 1 | 32MHz | Capacitors_SMD:C_0805 | Y2 |
| 1 | 560R | Resistors_SMD:R_0603 | R8 |
| 1 | 6.8k | Resistors_SMD:R_0603 | R20 |
| 1 | 68K | Resistors_SMD:R_0603 | R9 |
| 1 | Conn_02x02_Odd_Even | Pin_Headers:Pin_Header_Straight_2x02_Pitch2.54mm | J1 |
| 1 | Conn_Coaxial | Connectors_Molex:Molex_Microcoaxial_RF | J5 |
| 1 | ICM20689 | Housings_DFN_QFN:QFN-24_4x4mm_Pitch0.5mm | U2 |
| 1 | INPUTGND | Wire_Pads:SolderWirePad_single_SMD_5x10mm | J6 |
| 1 | INPUTV | Wire_Pads:SolderWirePad_single_SMD_5x10mm | J2 |
| 1 | LED_RED | LEDs:LED_0805 | D1 |
| 1 | LM324A | Housings_SOIC:SOIC-14_3.9x8.7mm_Pitch1.27mm | U1 |
| 1 | MCP4725 | TO_SOT_Packages_SMD:SOT-23-6 | U3 |
| 1 | PRGM | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J3 |
| 1 | Q_NMOS_GSD | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | Q_PMOS_GSD | TO_SOT_Packages_SMD:SOT-23 | Q2 |
| 1 | SW_Push | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | SW1 |
| 1 | TLV70032_SOT23-5 | TO_SOT_Packages_SMD:SOT-23-5 | U4 |
| 1 | UART | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | J4 |
| 1 | nrf52832-qfax | Housings_DFN_QFN:UQFN-48-1EP_6x6mm_Pitch0.4mm | U5 |
Questions
How big is the Telsys PCB?
It measures 66.5 × 18.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Telsys use?
65 parts, built around the LM324AD. 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 Telsys KiCad files?
From the IMbackK/TelsysHW repository on GitHub, at the commit this page was made from: the board is telsys.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Telsys design in my own project?
Its repository states no licence, so its author keeps all rights: ask IMbackK before reusing the design.
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