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Octoprobe Tentacle

octoprobe·tentacle·kicad/tentacle_v0.8/pcb_tentacle.kicad_pcb

Octoprobe Tentacle PCB layout, top view — open source RP2040/RP2350 board by octoprobe
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About the Octoprobe Tentacle PCB

Octoprobe Tentacle is an open source RP2040/RP2350 PCB design by octoprobe, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 165 mm, with 130 components from 34 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the AMS1117-3.3, W25Q32JVS, TPS2595XX, USB2514B_BI and GAQY221S. By type, the board carries 54 resistors, 40 capacitors, 17 diodes, 16 ICs, 2 crystals and 1 connector.

From the project

Open source hardware as part of octoprobe

Remove silkscreen: R301, U302, R1401, R1505 Breadbord pads: Only one ground line to leave more space for DUT-boards Breadbord: Enlarged for big boards buffering capacitor on HUB+5V GPIO Pads equal to Tentacle v3 LEDS less bright (Green LEDs 2k2 -> 4k7) Power DUT via PICO-Infra? + DUT is not powerered when Tentacle is plugged in. Power PICO-Probe via PICO-Infra? + PICO-Probe is by default off. + PICO-Probe Boot pin would be controlled by PICO-Infra. DUT may be powerered via a jumper RP2INFRABOOT via USB Port 2 RP2PROBEBOOT via GPIO RP2PROBE_RUN via GPIO

Main components on the Octoprobe Tentacle

RP2040AMS1117-3.3W25Q32JVSTPS2595XXUSB2514B_BIGAQY221S

Octoprobe Tentacle bill of materials (BOM)

130 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
RP2040
U201, U1501
1
AMS1117-3.3
U202
2
W25Q32JVS
U203, U1502
3
TPS2595XX
TPS2595xx
U204, U205, U207
1
USB2514B_BI
USB2514B_Bi
U302
7
GAQY221S
U601, U701, U801, U901, U1001, U1101, U1201
1
OSCILLATOR-12MHZ
Oscillator-12MHz
X201
1
24MHZ
24MHz
Y301
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J301
10
C34499
white
D101, D601, D701, D801, D901, D1001, D1101, D1201 +2
3
C2297
green
D103, D104, D301
1
C2293
blue
D201
1
C8598
B5819W SL
D202
1
C2295
red
D203
1
PRTR5V0U2X
D302
4
10U
10u
C201, C202, C215, C401
29
100N
100n
C203, C204, C207, C208, C209, C210, C211, C212 +21
5
1u
C205, C206, C217, C1503, C1504
2
18P
18p
C307, C308
8
2K2
2k2
R101, R601, R701, R801, R901, R1001, R1101, R1201
Show 14 more
QtyPartRefs
3
4K7
R103, R104, R301
3
1k
R201, R204, R1503
4
33R
R202, R203, R1501, R1502
1
0R
R205
9
10K
10k
R207, R210, R213, R312, R313, R314, R315, R1504 +1
1
2K7
R208
1
3K6
R209
9
100K
R211, R304, R305, R306, R307, R308, R310, R311 +1
1
33K
R212
2
0R
R220, R221
2
5.1K
R302, R303
1
12K
12k
R309
7
390
R602, R702, R802, R902, R1002, R1102, R1202
2
2K2
2k2
R1506, R1507

Octoprobe Tentacle design files

The KiCad project lives in the octoprobe/tentacle repository on GitHub; these links point at the commit this page was built from.

Octoprobe Tentacle: common questions

What microcontroller does the Octoprobe Tentacle use?

The Octoprobe Tentacle is built around the RP2040, from the RP2040/RP2350 family.

How big is the Octoprobe Tentacle PCB?

The Octoprobe Tentacle measures 100 × 165 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Octoprobe Tentacle?

130 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 Octoprobe Tentacle design files?

From the octoprobe/tentacle 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 Octoprobe Tentacle design in my own project?

Yes, under the terms of its MIT license, which octoprobe chose for the repository.

Can I test firmware for the Octoprobe Tentacle without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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