2 layers100 × 100 mm
JBT01
jbteja/tj01-ms51-heater-controller
A heater control system featuring deterministic operation, safety auto-cutoff, predefined timer modes, and temperature measurement using a K-type thermocouple.
79 parts1
2 layers88.9 × 88.9 mm
Knob v1
bmo/tuning-knob-pcboard7KiCAD PC Board design for a tuning knob that works with Flex Radio SmartSDR, PowerSDR, and RHR. Uses STM32 hardware.
- Size
- 88.9 × 88.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 59
- Pads
- 131
- Tracks, vias
- 166, 1
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 27 Jun 2021
- Updated
- 5 Aug 2022
Overview
Knob v1 is an open-source printed circuit board by bmo, from the bmo/tuning-knob-pcboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 88.9 × 88.9 mm with 25 parts on 59 nets, routed with 166 tracks and 1 via.
It is built around the CAT24C256LI and 1N5231BTR. Its parts include 7 resistors, 7 switches, 4 connectors, 3 diodes and 2 ICs. It belongs with the radio and wireless boards of this library.
Main components
2
CAT24C256LI
PDIP-81,000,000 cycles 1.8V~5.5V 100 Years 256Kbit 400kHz 5ms Hardware write protection function、Noise suppression function、Built-in power-on reset (POR) I2C PDIP-8 EEPROM ROHSonsemiEEPROM
1N5231BTR
DO-35-65℃~+200℃ 1 Independent 1.6kΩ 17Ω 4.845V~5.355V 5.1V 500mW 5uA@2V DO-35 Zener Diodes ROHSonsemiZener Diodes
README
README.mdtuning-knob-pcboard
https://github.com/bmo/tuning-knob-pcboard
This is a KiCAD PC Board design for a tuning knob that works with PowerSDR and SmartSDR and Remote Ham Radio (RHR). Uses STM32 hardware. Find the software that works with this here: https://github.com/bmo/hwcontrol
Features:
- 24ppr encoder
- multiple ways to build it
- uses mostly-available STM32F103 "Blue Pill" PC boards, may also work with newer, more powerful, more available, and cheaper (!?) "Black Pill" PCBs using STM32F4xx CPUs (with code changes)
- through-hole parts
- 20-30 minute assembly
- traces already supplied for future expansion for footswitch inputs, flash memory, SPI-based displays
- works with RHR, PowerSDR, SmartSDR when used in conjunction with https://github.com/bmo/hwcontrol
Version 1:
Build it two ways:
- snap-action tactile switches and 3mm LEDs
- small tactile switches with built-in LEDs
- isolated pin 40 to not prohibit "Black Pill" from being plugged in
Version 2 (in Progress):
- Cherry MX or compatible "buttons"
- RGB LEDs for illumination
Future:
- With a composite USB Device providing two CDC (serial) devices, a solution that provides a Knob and a de-bounced footswitch
References:
- KiCAD library / design for Cherry Switch + RGB : https://github.com/sszczep/Cherry-MX-Breakout-Board
Contributions
Thanks to @cjtheham for BOM and documentation!
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R6, R7 |
| 3 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3 |
| 3 | LED | LED_THT:LED_D3.0mm | D1, D2, D3 |
| 3 | PB | mine:SW_PUSH-12mm-corrected | SW1, SW2, SW3 |
| 3 | SW_Push_LED_TL6215 | mine:TL6215V | SW1A1, SW2A1, SW3A1 |
| 1 | .01 | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | 1N5231BTR | digikey-footprints:DO-35 | Z1 |
| 1 | CAT24C256 | SnapEDA:SOIC8-1.27-5X4MM | U2 |
| 1 | PTT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J3 |
| 1 | Rotary_Encoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC12E-Switch_Vertical_H20mm | SW4 |
| 1 | SPI Interface | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | TTL Programming | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | YAAJ_BluePill_SWD_Breakout | Footprints:YAAJ_BluePill_SWD_1 | U1 |
| 1 | i2c_addr | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J2 |
Questions
How big is the Knob v1 PCB?
It measures 88.9 × 88.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Knob v1 use?
25 parts, built around the CAT24C256LI and 1N5231BTR. 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 Knob v1 KiCad files?
From the bmo/tuning-knob-pcboard repository on GitHub, at the commit this page was made from: the board is knob_v1/knob_v1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Knob v1 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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