Orc was started during the corona pendemic and the time where it wasn't possible for me to go rowing. The basic concept: Use available electronic parts (e.g. from Reichelt Elektronik) and a 3D-printer (service) to create a good and solid rowing computer for the day-to-day-training.
The system consists of a microcontroller, SD-card, 9-DOF-sensor, e-paper display, a li-ion battery and charing electronic.
- Electronic parts working together
- 9-DOF-sensor software works
- e-paper display software works
- Logging to SD-card works (result is stored as csv file)
- Bluetooth works
- charging works
- Design, build and test a housing
- Add a voltage divider to show the battery state-of-charge
- Use Bluetooth to publish battery status and SRM (strokes per minute) value
- Use Web Bluetooth to show orc values like battery status and SRM
- The needed electronic parts can be found in the parts_list directory. Currently theres only one parts list for Reichelt Elektronik available.
- More information about the first version of the housing will be uploaded soon
Wiring lists of the electronic components
| ESP32-WROOM |
ePaper |
| D35 |
BUSY -  violett |
| D32 |
RST -  white |
| D33 |
DC -  green |
| D25 |
CS -  orange |
| D26 |
CLK -  yellow |
| D27 |
DIN -  blue |
| 3V3 |
VCC |
| GND |
GND |
| ESP32-WROOM |
Accel sensor (IMU) |
| D13 |
INT |
| D21 |
SDA - white |
| D22 |
SCL - yellow |
| Charger |
Accel sensor (IMU) |
| VIN |
+5V -  red |
| GND |
GND -  black |
| ESP32-WROOM |
Micro-SD Breakout Board |
| D5 (CS) |
CS |
| D23 (MOSI) |
DI |
| D18 (CLK) |
CLK |
| D19 (MISO) |
DO |
| GND |
GND |
| 3V3 |
3v |
| SPI: VSPI |
|
| ESP32-WROOM |
Charger |
| VIN |
5V |
| GND |
GND |
