Cec2usb
About the Cec2usb PCB
Cec2usb is an open source AVR/Arduino PCB design by RedoXyde, published on GitHub. It is a 2-layer board measuring 23.7 × 30.5 mm, with 27 components from 23 distinct parts.
Its main chip is the ATmega32U2-AU, from the AVR/Arduino family. Other key parts include the TLV70233_SOT23-5. By type, the board carries 11 resistors, 6 capacitors, 4 connectors, 2 ICs, 2 diodes and 1 transistor.
It belongs with the keyboards designs in this gallery.
From the project
HDMI CEC to USB keyboard device
CEC to USB adapter, with HDMI passthrough
Main components on the Cec2usb
Cec2usb bill of materials (BOM)
27 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TLV70233_SOT23-5 | SOT-23-5 | U1 |
| 1 | ATmega32U2-AU | TQFP-32_7x7mm_P0.8mm | U2 |
| 1 | BC817 | SOT-23 | Q1 |
| 1 | 16MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | USB_B_Mini | USB_Mini-B_Lumberg_2486_01_Horizontal | J1 |
| 1 | HDMI_A | HDMI-19P-SND13x | J2 |
| 1 | HDMI_A | HDMI-19P-SNDx | J3 |
| 1 | ICSP | PinHeader_1x06_P1.27mm_Vertical | J4 |
| 1 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | 1N4148 | D_SOD-123 | D2 |
| 1 | 10uF | C_0603_1608Metric | C1 |
| 2 | 10pF | C_0603_1608Metric | C2, C3 |
| 1 | 1uF | C_0603_1608Metric | C4 |
| 2 | 220pF | C_0603_1608Metric | C5, C6 |
| 2 | 22R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R2 |
| 1 | 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3 |
| 1 | R_Small | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R4 |
| 1 | 18k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R5 |
| 1 | 100k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6 |
| 1 | 47k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R7 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 27k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8 |
| 1 | 220R | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9 |
| 2 | 4.7k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R11, R12 |
Cec2usb design files
The KiCad project lives in the RedoXyde/cec2usb repository on GitHub; these links point at the commit this page was built from.
- Layouthw/CEC2Usb.kicad_pcb
Cec2usb: common questions
What microcontroller does the Cec2usb use?
The Cec2usb is built around the ATmega32U2-AU, from the AVR/Arduino family.
How big is the Cec2usb PCB?
The Cec2usb measures 23.7 × 30.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Cec2usb?
27 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the Cec2usb design files?
From the RedoXyde/cec2usb repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Cec2usb design in my own project?
The repository has no license, so all rights stay with RedoXyde. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Cec2usb without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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