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Radio Board Rev2

Olin-Rocketry·sensing·hardware/Radio_Board_Rev2/Radio_Board_Rev2.kicad_pcb

Radio Board Rev2 layout, top view — open source ESP32 board by Olin-Rocketry

About the Radio Board Rev2

Radio Board Rev2 is an open source ESP32 PCB design by Olin-Rocketry, published on GitHub. It is a 2-layer board measuring 100 × 65.5 mm, with 16 components from 13 distinct parts.

Its main chip is the BNO055, from the ESP32 family. Other key parts include the MAX7219CNG, MPL3115A2 and TEENSY3.6. By type, the board carries 4 ICs, 3 switches, 3 capacitors, 3 resistors and 1 connector.

It belongs with the rf & radio, sensors and power & battery designs in this gallery.

From the project

Sensing hardware and software

Repository for all Olin Rocketry hardware and firmware.

The purpose of the avionics system is to determine when to deploy the drogue and main chutes, and to send the signal to do so to the recovery system. The flight computer contains several sensors to help detect apogee, and a microcontroller to read and process the data and send the signal.

- a commercial-off-the-shelf (COTS) flight computer; - a student-designed flight computer, which includes sensors, microcontroller, GPS, and radio; and - a student-designed battery management system (BMS).

Radio Board Rev2, from the project README
From the project README

Main components on the Radio Board Rev2

MAX7219CNGBNO055MPL3115A2TEENSY3.6

Radio Board Rev2 bill of materials (BOM)

16 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MAX7219CNG
IC1
1
BNO055
ESP32-DEVKIT-V1
U1
1
MPL3115A2
~
U2
1
TEENSY3.6
MIC5219-3.3YM5
U3
1
CONN_01X09_FEMALE
Conn_01x02_Socket
J1
2
~
DISP_1, DISP_2
3
SW_DIP_x01
SW1, SW2, SW3
1
100N
470pF
C1
1
6.8N
2.2uF
C2
1
120N
0.1uF
C3
1
10K
28k
R1
1
10K
100k
R2
1
10K
200k
R3

Radio Board Rev2 design files

The KiCad project lives in the Olin-Rocketry/sensing repository on GitHub; these links point at the commit this page was built from.

Radio Board Rev2: common questions

What microcontroller does the Radio Board Rev2 use?

The Radio Board Rev2 is built around the BNO055, from the ESP32 family.

How big is the Radio Board Rev2?

The Radio Board Rev2 measures 100 × 65.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Radio Board Rev2?

16 components, from 13 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 Radio Board Rev2 design files?

From the Olin-Rocketry/sensing 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 Radio Board Rev2 design in my own project?

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

Can I test firmware for the Radio Board Rev2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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