#epocketbike — Public Fediverse posts

@LeoDJ @cfhn
Außerdem entstanden für das #ChaosMauldasch Cluster:
Der #MauldaschTracker - das Gepäck-Tracking-System für unsere LKW-Logistik-Eskalation auf der #WHY2025.

Komplett mit Drucker für die Tracking-Labels (von @techbeard), Barcode-Scanner-Seite (um Zeug umzuladen), Live-Tracking (per Handy-GPS im LKW), etc.

Tracking-Link um @LeoDJ's #ePocketBike zu tracken:
https://tracking.mauldas.ch/track/?id=t7ynvrbrad9vxe53m4u7gxwethuk4b63

Because I like the concept, here's this years #GoodOf2024. A concise list of projects I did in 2024, to actually convince my brain that yes, I actually achieved something.

- Helped @patagona with his ISDT #CM1620 reverse engineering
- Built the #Framework #DongleHiderPlus expansion card
- Implemented MQTT data logging for the #ePocketBike stats
- Started development of an #Arduino compatible Ethernet stack for the cheap #CH32V208 MCUs (built-in 10M PHY)

🧵 1/3

- Bought a Mercedes #startergenerator and started reverse-engineering it
- Implemented gamma correction for #PixelBridge
- Built a control board and instrument display for the #ePocketBike
- Dabbled in upholstry and built a new seat for the #ePocketBike
- Acquired some big #SSD1303 OLEDs and desgined a breakout board + Arduino library for it.
- Released the #PawConnect (Tag-Connect #TC2030 compatible f̶o̶o̶t̶ pawprint)
- Built the now famous #PDBrick together with @techbeard
2/3

- Bought a Mercedes #startergenerator and started reverse-engineering it
- Implemented gamma correction for #PixelBridge
- Built a control board and instrument display for the #ePocketBike
- Dabbled in upholstry and built a new seat for the #ePocketBike
- Acquired some big #SSD1303 OLEDs and desgined a breakout board + Arduino library for it.
- Released the #PawConnect (Tag-Connect #TC2030 compatible f̶o̶o̶t̶ pawprint)
- Built the now famous #PDBrick together with @techbeard
2/3

- Bought a Mercedes #startergenerator and started reverse-engineering it
- Implemented gamma correction for #PixelBridge
- Built a control board and instrument display for the #ePocketBike
- Dabbled in upholstry and built a new seat for the #ePocketBike
- Acquired some big #SSD1303 OLEDs and desgined a breakout board + Arduino library for it.
- Released the #PawConnect (Tag-Connect #TC2030 compatible f̶o̶o̶t̶ pawprint)
- Built the now famous #PDBrick together with @techbeard
2/3

- Bought a Mercedes #startergenerator and started reverse-engineering it
- Implemented gamma correction for #PixelBridge
- Built a control board and instrument display for the #ePocketBike
- Dabbled in upholstry and built a new seat for the #ePocketBike
- Acquired some big #SSD1303 OLEDs and desgined a breakout board + Arduino library for it.
- Released the #PawConnect (Tag-Connect #TC2030 compatible f̶o̶o̶t̶ pawprint)
- Built the now famous #PDBrick together with @techbeard
2/3

- Bought a Mercedes #startergenerator and started reverse-engineering it
- Implemented gamma correction for #PixelBridge
- Built a control board and instrument display for the #ePocketBike
- Dabbled in upholstry and built a new seat for the #ePocketBike
- Acquired some big #SSD1303 OLEDs and desgined a breakout board + Arduino library for it.
- Released the #PawConnect (Tag-Connect #TC2030 compatible f̶o̶o̶t̶ pawprint)
- Built the now famous #PDBrick together with @techbeard
2/3

New experience in unfamiliar territory unlocked: upholstery.

Since the original #ePocketBike seat foam was pretty beat up (see past post) and thin to begin with, I decided to completely reupholster it.

I cut a slab of composite foam roughly in shape, glued it to the now reinforced seat base and trimmed it to shape.
Then I wrapped some fabric around it, marked it and used it as a template to cut out the leather pieces.
Now all that was left was sewing the pieces together and stapling it on.

First time working with fiberglass and epoxy to reinforce the seat of the #ePocketBike.

Either the aluminum underconstruction or the fiberglass laminate by themselves would probably have sufficed, but there's no engineering like overengineering :P

Big thanks to @techbeard, @hmnd and @crexodon for their help. I literally couldn't have done it without them <3

[07.06.2023]
Just in time for #GPN21, I mounted the display and quickly hacked together the serial communication, so the actual data coming from the VESC gets displayed on the dashboard I coded last year.

I still need to revamp the layout and some values, now that I actually know what metrics I get from the VESC and what I want to actually display.

#ePocketBike

Mounted the control box more permanently and replaced the chain.
#ePocketBike

Finally! The wiring for the #ePocketBike is done!

Preliminary tests show that the ESC still works and the DIY hall-sensored brake lever too!
(For controlled recuperative braking)
Although the signal of it is a bit noisy, probably need to fix it at some point ^^'

Now I can finally get to the fun part: Writing firmware ^^

The I/O control board for the #ePocketBike is taking shape.

The seat of the #ePocketBike really needs some fixing.
I want to repair and reinforce that plastic piece (some metal band and fiber weave?) and re-do the foam part so it's actually cushy again.

No real experience with either of that.
First I need a plan and what materials to get...
Let's see when I'll get to it.

- Dabbled in building two antweight battle bots together with @techbeard and reached 3rd place in two competitions
- Converted a stinky pocket bike into a powerful #ePocketBike (2kW BLDC)
- Assembled #midiLighter into a case
- Built a projector mount for my bed
- Built a controller and mounted a radial-flow fan to my radiator to increase its room heating performance
- Reverse engineered and proposed a fix to a broken slush machine PCB
2/3

Maiden voyage was a big success!
Project #ePocketBike milestone 1 reached ✅

But there is still _a lot_ left to do ^^"

Massive thanks to @vale_1998, @FranzImsch and @patagona for your help thus far, I couldn't have done it without you