Hardware
- fit into space/gap of the frame
- PWM - pulse with modulation
- run an operating system for hosting a webserver
- Wifi Hotspot
- GPIOs
https://github.com/weinzmi/ergoFACE/wiki/Prototype-concept
## DAUM - Ergobike 8008 TRS
the information and documentation needed to start this project can be looked up on the internet. Thanks to a great documentation from the company DAUM, there are lots of helpful support files, hints, tips & tricks.
even dough the DAUM has a serial (RS232) connector integrated in the cockpit, the aim of this project is to disconnect the cockpit and instead run the logic and do the signal processing inside the ergoFACE. This requires the ergoFACE to have the minimum functional requirements to be implemented.
the construction of the DAUM makes it possible to have a plug&play kind of approach when connecting the ergoFACE, due to the connector plug in the signal cable.
is for control and visualization of the actual and set point values - not going deeper into detail it is connected to the drive train via a 4-wire cable
the drive train sends and receives analog signals to and from the cockpit.
| Color | Signal | Desc. | Drive Train | Specification |
|---|---|---|---|---|
| GREEN | +5V | supply voltage | INPUT | 5V / DC |
| BROWN | GND | ground | INPUT | 0V DC |
| WHITE | RPM | rectangular pulse, cadence | OUTPUT | 2,5Vpp / 2ms pulse |
| YELLOW | BRK | PWM brake signal for electro magnetic brake | INPUT | 1,5Vpp / 61,5Hz |
the DAUM has a independence at some RPM/Watt ratios, these are listed in the table below. For intapretation, e.g.: at 75W, you have to apply a minimum of 40 RPM, but if you exceed 100RPM, the power is not applied correct anymore.
CSV table for cadence independence
| RPM | Wattage | Wattage |
|---|---|---|
| 1/min | min | max |
| 160 | 100 | 800 |
| 150 | 100 | 800 |
| 140 | 100 | 750 |
| 130 | 100 | 700 |
| 120 | 100 | 650 |
| 110 | 100 | 575 |
| 100 | 50 | 500 |
| 90 | 50 | 450 |
| 80 | 50 | 400 |
| 70 | 50 | 350 |
| 60 | 25 | 250 |
| 50 | 25 | 150 |
| 40 | 25 | 150 |
| 30 | 0 | 0 |
| 20 | 0 | 0 |
| 10 | 0 | 0 |
| 0 | 0 | 0 |