HardLabs

Control r1

cuspaceflight·OkGo·OkGo 2/control/control-r1.kicad_pcb

Control r1 PCB layout, top view — open source STM32 board by cuspaceflight

About the Control r1 PCB

Control r1 is an open source STM32 PCB design by cuspaceflight, published on GitHub. It is a 2-layer board measuring 90.5 × 51 mm, with 65 components from 37 distinct parts.

Its main chip is the STM32F071CBT6, from the STM32 family. Other key parts include the SWD, MEJ2S0305SC, RFM95W, LCD_HD44780 and ADP3335. By type, the board carries 21 resistors, 14 capacitors, 10 connectors, 6 ICs, 5 diodes and 4 transistors.

It belongs with the rf & radio designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

Rocket motor ignition and valve control from far, far away

OkGo is Cambridge University Space Flight's rocket firing controller.

OkGo was designed for testing the Quasar hybrid rocket motor. It allowed remote (over 100m of wire) control of the nitrous oxide valve and firing of the ignition e-match. It was constructed using an ad-hoc point-to-point layout. An entirely passive design, it simply uses mechanical switches to trigger relays. It was later upgraded to control two valves, one of which passed a low flow of nitrous oxide to help start the motor.

Main components on the Control r1

SWDSTM32F071CBT6MEJ2S0305SCRFM95WLCD_HD44780ADP3335

Control r1 bill of materials (BOM)

65 components, 37 distinct parts.

QtyPartRefs
1
SWD
U101
1
STM32F071CBT6
U102
1
MEJ2S0305SC
U103
1
RFM95W
U105
1
LCD_HD44780
U106
1
ADP3335
U107
4
BSS138BK
Q201, Q202, Q203, Q204
1
8MHz
Y101
1
KEYSW
P102
1
BATT
P105
1
ARM_LED
P106
1
SMA
P108
1
POWER_SW
P110
1
SERIAL
P111
1
CH1
P201
1
CH2
P202
1
CH3
P205
1
CH4
P206
1
PTC
F101
1
20k LIN
RV101
Show 17 more
QtyPartRefs
1
nRST
TP101
1
3v3
TP102
5
TVS_small
D101, D103, D104, D105, D106
5
100n
C101, C102, C104, C108, C112
2
4u7
C103, C105
1
10n
C106
1
1u
C107
2
15p
C109, C110
1
100u
C111
2
2u2
C113, C114
9
10k
R101, R107, R108, R109, R110, R205, R206, R211 +1
1
100R
R102
1
75R
R103
1
3k3
R105
1
10k
R106
4
180R
R201, R202, R207, R208
4
100k
R203, R204, R209, R210

Control r1 design files

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

Control r1: common questions

What microcontroller does the Control r1 use?

The Control r1 is built around the STM32F071CBT6, from the STM32 family.

How big is the Control r1 PCB?

The Control r1 measures 90.5 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Control r1?

65 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Control r1 design files?

From the cuspaceflight/OkGo repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Control r1 design in my own project?

The repository has no license, so all rights stay with cuspaceflight. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Control r1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

More boards in OkGo

Earlier revisions in the repo: control

Similar boards