Makennbot
About the Makennbot PCB
Makennbot is an open source Microchip SAM PCB design by idlehandsdev, published on GitHub. It is a 2-layer board measuring 60 × 75 mm, with 53 components from 34 distinct parts.
Its main chip is the SAMD21G18, from the Microchip SAM family. Other key parts include the 74AHC1G125, AP2112K-3.3V, MCP73831T and DRV8835. By type, the board carries 15 capacitors, 13 resistors, 6 connectors, 5 ICs, 4 diodes and 2 transistors.
It belongs with the robotics & motion designs in this gallery.
From the project
A neural network bot for Make
BOM Here: https://www.findchips.com/org/10-open-hardware/list/53285-makennbot
Main components on the Makennbot
Makennbot bill of materials (BOM)
53 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74AHC1G125 | sot23-5 | U1 |
| 1 | SAMD21G18 | TQFP-48_7x7mm_Pitch0.5mm | U2 |
| 1 | AP2112K-3.3V | SOT-23-5 | U3 |
| 1 | MCP73831T | sot23-5 | U4 |
| 1 | DRV8835 | WSON-12-2x3 | U5 |
| 1 | Q_PMOS_DSG | DMG2307L_SOT23 | Q1 |
| 1 | Q_PMOS_GSD | SOT23 | Q2 |
| 1 | Crystal_Small | crystal_smd_3.2x1.5 | Y1 |
| 1 | USB_OTG | USB_Micro-B | P1 |
| 1 | BatteryHolder | Connectors_JST_S2B-PH-K | P2 |
| 1 | CONN_01X07 | Pin_Header_Straight_1x07 | P3 |
| 1 | MOTOR_A | C_1206 | P4 |
| 1 | MOTOR_B | C_1206 | P5 |
| 1 | DBG_CONN | Atmel_ICE_Connector_02x05 | P17 |
| 1 | 500MA 500mA | c_1206 | F1 |
| 4 | Photores | Pin_Header_Straight_1x02 | PH1, PH2, PH3, PH4 |
| 1 | SWITCH_INV | Pin_Header_Straight_1x03 | PWR1 |
| 1 | D_Schottky | bat20j | D1 |
| 1 | LED | LED-0603 | D3 |
| 1 | RX | Led_0603 | D6 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TX | Led_0603 | D7 |
| 1 | FB - 30Ohm | R_SM0603 | L1 |
| 7 | 0.1UF 0.1uF | C_0603 | C1, C3, C5, C11, C12, C14, C15 |
| 2 | 15PF 15pF | C_0603 | C2, C4 |
| 2 | 2.2UF 2.2uF | C_0603 | C6, C9 |
| 2 | 4.7UF 4.7uF | C_0603 | C7, C10 |
| 1 | 1UF 1uF | C_0603 | C8 |
| 1 | 10UF 10uF | C_0603 | C13 |
| 1 | 100K 100k | R_0603 | R1 |
| 1 | 330 | R_0603 | R2 |
| 5 | 10K 10k | R_0603 | R3, R6, R9, R11, R15 |
| 2 | 47K | R_0603 | R4, R5 |
| 3 | 1k | R_0603 | R13, R14, R19 |
| 1 | 33K 33k | R_0603 | R18 |
Makennbot design files
The KiCad project lives in the idlehandsdev/makennbot repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/make_nn_bot.kicad_pcb
- BOMPCB/BOM.csv
Makennbot: common questions
What microcontroller does the Makennbot use?
The Makennbot is built around the SAMD21G18, from the Microchip SAM family.
How big is the Makennbot PCB?
The Makennbot measures 60 × 75 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Makennbot?
53 components, from 34 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 Makennbot design files?
From the idlehandsdev/makennbot repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Makennbot design in my own project?
The repository has no license, so all rights stay with idlehandsdev. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Makennbot without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.
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