Bebl v2
About the Bebl v2 PCB
Bebl v2 is an open source AVR/Arduino PCB design by wyolum, published on GitHub. It is a 2-layer board measuring 80 × 24 mm, with 72 components from 40 distinct parts.
Its main chip is the ATMEGA328, from the AVR/Arduino family. Other key parts include the MCP73831, TPS61221DCK and ADXL345. By type, the board carries 14 connectors, 12 resistors, 11 capacitors, 7 diodes, 4 ICs and 3 transistors.
From the project
"Bar End Brake Light" , redux. v2 of Justin's original BEBL with mods.
"Bar End Brake Light" , redux. v2 of Justin's original BEBL with mods.
[CERN Open Hardware Licence v1.2 ]:http://www.ohwr.org/attachments/2388/cernohlv12.txt
Main components on the Bebl v2
Bebl v2 bill of materials (BOM)
72 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATMEGA328 | TQFP32 | U1 |
| 1 | MCP73831 | SOT23-5 | U2 |
| 1 | TPS61221DCK | SOT23-6_LDO | U3 |
| 1 | ADXL345 | ADXL345 | U4 |
| 3 | BC847BDW1T1G | SOT363 | Q1, Q2, Q3 |
| 1 | 8MHz | Xtal_SMD4 | X1 |
| 1 | ISP | Header_3x2_ISP | P1 |
| 1 | FTDI | PIN_ARRAY-6X1 | P2 |
| 1 | LED_1 | pin_socket_2 | P3 |
| 1 | LED_2 | pin_socket_2 | P4 |
| 1 | LED_3 | pin_socket_2 | P5 |
| 1 | LED_PWR | pin_socket_2 | P6 |
| 1 | USB-Micro | USB_B_Micro_seeed | P7 |
| 1 | CHG_LED | pin_socket_2 | P8 |
| 1 | Ext_LiPo | pin_socket_2 | P9 |
| 1 | LED_CHG | pin_strip_2 | P10 |
| 1 | LED_1 | pin_strip_2 | P11 |
| 1 | LED_2 | pin_strip_2 | P12 |
| 1 | LED_3 | pin_strip_2 | P13 |
| 1 | LED_PWR | pin_strip_2 | P14 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 7 | I/O | breakout_smd | B1, B2, B3, B4, B5, B6, B7 |
| 1 | LiPo+ | batt_clip | B8 |
| 1 | LiPo- | batt_clip | B9 |
| 8 | SCREW | screw_3mm | SC1, SC2, SC3, SC4, SC5, SC6, SC7, SC8 |
| 1 | RST | Switch_SMT | SW1 |
| 1 | MODE | Switch_SMT | SW2 |
| 1 | CHG | LED-0805 | D1 |
| 4 | LED_P | LED-5MM | D2, D3, D5, D6 |
| 1 | LED_D | LED-5MM | D4 |
| 1 | LED_B | LED-5MM | D7 |
| 1 | 4u7 | Inductor_LQH3NPN | L1 |
| 2 | 22p | c_0805 | C1, C2 |
| 2 | 100n | c_0805 | C3, C4 |
| 2 | 4u7 | c_0805 | C5, C6 |
| 3 | 10uF | c_0805 | C7, C8, C9 |
| 2 | 100nF | c_0805 | C10, C11 |
| 4 | 10k | r_0805 | R1, R2, R3, R4 |
| 1 | 150E | r_0805 | R5 |
| 1 | 2k | r_0805 | R6 |
| 6 | 22E | r_0805 | R7, R8, R9, R10, R11, R12 |
Bebl v2 design files
The KiCad project lives in the wyolum/bebl_v2 repository on GitHub; these links point at the commit this page was built from.
Bebl v2: common questions
What microcontroller does the Bebl v2 use?
The Bebl v2 is built around the ATMEGA328, from the AVR/Arduino family.
How big is the Bebl v2 PCB?
The Bebl v2 measures 80 × 24 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bebl v2?
72 components, from 40 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Bebl v2 design files?
From the wyolum/bebl_v2 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Bebl v2 design in my own project?
The repository has no license, so all rights stay with wyolum. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Bebl v2 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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