Pystem mini bot
About the Pystem mini bot PCB
Pystem mini bot is an open source PCB design by ThriftyPiano, published on GitHub under the MIT license. It is a 2-layer board measuring 48 × 33 mm, with 21 components from 20 distinct parts.
Other key parts include the C2071056. By type, the board carries 10 connectors, 5 capacitors, 3 resistors, 1 IC, 1 diode and 1 inductor.
It belongs with the robotics & motion, sensors and dev boards & breakouts designs in this gallery.
From the project
Online IDE for PySTEM Mini Bot
A 48 x 33 mm carrier PCB (4 servo + 4 sensor headers in two rows) that turns an M5StickS3 into the Mini Bot's brain. The stick plugs into a right-angle HAT2 header and lies flat on the robot (screen up, body overhanging the board edge); everything else is solderless connectors, so a batch of bots assembles with a screwdriver.
Never feed the 6 V pack into the stick directly: fresh alkalines sit at 6.4 V and the stick's internal power chips are 5 V parts — that's what the buck (U1 + L1 + C1/C3/C4/C5) is for. C7 (470 uF) rides through servo-stall sag so the stick doesn't brown out. The IMU is…
Main components on the Pystem mini bot
Pystem mini bot bill of materials (BOM)
21 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C2071056 AP63205 Diodes Inc | TSOT-23-6 | U1 |
| 1 | C41417356 HAT2_StickS3 hanxia | PinHeader_2x08_P2.54mm_Horizontal | J1 |
| 1 | C49257 SERVO_A BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | C49257 SERVO_B BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | C49257 HEAD_PAN BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | C49257 HEAD_TILT BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | C49257 ENC_A BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | C49257 ENC_B BOOMELE | PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | C124378 COLOR Ckmtw | PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | C124378 DIST Ckmtw | PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | C16214 DC_6V_5525 BOOMELE | BarrelJack_Horizontal | J11 |
| 1 | C965805 GREEN XINGLIGHT | LED_0603_1608Metric | D1 |
| 1 | C57254 6.8uH Sunlord | L_Bourns_SRN6045TA | L1 |
| 1 | C15850 10uF/25V Samsung | C_0805_2012Metric | C1 |
| 1 | C1591 100nF Samsung | C_0603_1608Metric | C3 |
| 2 | C12891 22uF/25V Samsung | C_1206_3216Metric | C4, C5 |
| 1 | C134593 470uF/16V Lelon | CP_Radial_D8.0mm_P3.50mm | C7 |
| 1 | C31850 22k UniOhm | R_0603_1608Metric | R3 |
| 1 | C21190 1k UniOhm | R_0603_1608Metric | R4 |
| 1 | C22975 2k UniOhm | R_0603_1608Metric | R5 |
Pystem mini bot design files
The KiCad project lives in the ThriftyPiano/pystem-mini-bot repository on GitHub; these links point at the commit this page was built from.
Pystem mini bot: common questions
How big is the Pystem mini bot PCB?
The Pystem mini bot measures 48 × 33 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pystem mini bot?
21 components, from 20 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 Pystem mini bot design files?
From the ThriftyPiano/pystem-mini-bot repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Pystem mini bot design in my own project?
Yes, under the terms of its MIT license, which ThriftyPiano chose for the repository.
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